STATE / TERRITORY LEDGER
California drinking water system records
EPA’s September 2026 export lists 754 active community water systems in California, with 102 current-violation flags and 6 serious-violator flags among covered systems serving at least 2,500 people.
Source: EPA SDWIS system-search export · Active community systems · Snapshot 13 Sep 2026
Systems754active CWS · pop. 2,500+
Population served39,518,878reported total; may overlap
Current violation flag13.5%102 systems
Serious-violator flag0.8%6 systems
01 / LARGEST SYSTEMS
California community water systems
EPA’s covered California records include 754 active community systems reporting a combined population-served total of 39,518,878, which may overlap.
Population served is a system-reported service figure. It is not a count of unique state residents.
| Water system | Population served | Primary source | Current export status |
|---|---|---|---|
| Los Angeles-City, Dept. Of Water & PowerCA1910067 | 3,875,566 | Surface water | No current violation flagged |
| East Bay MudCA0110005 | 1,442,800 | Surface water | No current violation flagged |
| San Diego, City OfCA3710020 | 1,385,379 | Surface water | No current violation flagged |
| San Jose WaterCA4310011 | 1,039,920 | Surface water | No current violation flagged |
| Sfpuc City Distribution DivisionCA3810011 | 848,019 | Surface water purchased | No current violation flagged |
| Eastern Municipal WdCA3310009 | 666,581 | Surface water purchased | No current violation flagged |
| City Of FresnoCA1010007 | 545,716 | Surface water | No current violation flagged |
| City Of Sacramento MainCA3410020 | 527,979 | Surface water | No current violation flagged |
| Long Beach Utilities DepartmentCA1910065 | 466,772 | Surface water purchased | No current violation flagged |
| Irvine Ranch Water DistrictCA3010092 | 444,800 | Surface water | No current violation flagged |
| City Of AnaheimCA3010001 | 348,593 | Surface water | No current violation flagged |
| Alameda County Water DistrictCA0110001 | 344,000 | Surface water | No current violation flagged |
| City Of Santa AnaCA3010038 | 310,539 | Surface water purchased | No current violation flagged |
| Riverside, City OfCA3310031 | 298,398 | Groundwater under influence of surface water | No current violation flagged |
| Santa Clarita Valley Water AgencyCA1910240 | 294,090 | Surface water | No current violation flagged |
| Gswc - SouthwestCA1910155 | 277,740 | Surface water purchased | No current violation flagged |
| Helix Water DistrictCA3710010 | 277,668 | Surface water | No current violation flagged |
| Coachella Vwd: Cove CommunityCA3310001 | 270,000 | Ground water | No current violation flagged |
| Cws - BakersfieldCA1510003 | 267,881 | Surface water | No current violation flagged |
| San Gabriel Valley Water Co.-El MonteCA1910039 | 248,000 | Ground water | No current violation flagged |
| Otay Water DistrictCA3710034 | 238,008 | Surface water purchased | No current violation flagged |
| San Gabriel Valley Wc - FontanaCA3610041 | 237,700 | Surface water | No current violation flagged |
| Modesto, City OfCA5010010 | 218,771 | Surface water purchased | No current violation flagged |
| San Bernardino CityCA3610039 | 214,665 | Ground water | No current violation flagged |
| Cucamonga Valley Water DistrictCA3610018 | 211,069 | Surface water | No current violation flagged |
| Los Angeles Cwwd 40 Reg 4 & 34 LancasterCA1910070 | 208,129 | Surface water purchased | No current violation flagged |
| City Of Huntington BeachCA3010053 | 201,000 | Surface water purchased | No current violation flagged |
| Oxnard Water DeptCA5610007 | 200,232 | Surface water purchased | No current violation flagged |
| Contra Costa Water DistrictCA0710003 | 198,000 | Surface water | No current violation flagged |
| Sacramento Suburban Water DistrictCA3410001 | 194,444 | Surface water purchased | No current violation flagged |
| City Of StocktonCA3910012 | 191,302 | Surface water | No current violation flagged |
| Sweetwater AuthorityCA3710025 | 191,282 | Surface water | No current violation flagged |
| Glendale-City, Water Dept.CA1910043 | 188,784 | Surface water purchased | No current violation flagged |
| Marin Municipal Water DistrictCA2110002 | 186,895 | Surface water | No current violation flagged |
| Ontario Municipal Utilities CompanyCA3610034 | 185,010 | Surface water purchased | No current violation flagged |
| Scwa - Laguna/VineyardCA3410029 | 184,896 | Surface water | Current health-based flag |
| California Water Service - StocktonCA3910001 | 176,266 | Surface water purchased | No current violation flagged |
| Santa Rosa, City OfCA4910009 | 175,396 | Ground water | No current violation flagged |
| City Of Garden GroveCA3010062 | 174,226 | Surface water purchased | No current violation flagged |
| Oceanside, City OfCA3710014 | 171,483 | Surface water purchased | No current violation flagged |
| Moulton Niguel Water DistrictCA3010073 | 170,236 | Surface water purchased | No current violation flagged |
| Elsinore Valley MwdCA3310012 | 169,455 | Surface water | No current violation flagged |
| Suburban Water Systems-San JoseCA1910205 | 168,843 | Surface water purchased | No current violation flagged |
| Corona, City OfCA3310037 | 168,575 | Surface water purchased | No current violation flagged |
| Santa Margarita Water DistrictCA3010101 | 168,289 | Surface water purchased | No current violation flagged |
| Pasadena Water And PowerCA1910124 | 164,344 | Surface water purchased | No current violation flagged |
| City Of HaywardCA0110006 | 162,954 | Surface water purchased | No current violation flagged |
| Bakersfield, City OfCA1510031 | 160,144 | Surface water purchased | No current violation flagged |
| City Of SunnyvaleCA4310014 | 157,566 | Surface water purchased | No current violation flagged |
| City Of RosevilleCA3110008 | 155,612 | Surface water | No current violation flagged |
| California Water Service Co. - ElaCA1910036 | 152,474 | Surface water purchased | No current violation flagged |
| Pomona - City, Water Dept.CA1910126 | 151,713 | Surface water | No current violation flagged |
| Cws - VisaliaCA5410016 | 148,496 | Ground water | No current violation flagged |
| Rancho California Water DistrictCA3310038 | 146,147 | Surface water purchased | No current violation flagged |
| California Water Service Co. - DominguezCA1910033 | 143,996 | Surface water purchased | No current violation flagged |
| City Of FullertonCA3010010 | 139,461 | Surface water purchased | No current violation flagged |
| Escondido, City OfCA3710006 | 137,044 | Surface water | No current violation flagged |
| Victorville Water DistrictCA3610052 | 135,983 | Surface water purchased | No current violation flagged |
| Jurupa Community SdCA3310021 | 135,093 | Surface water purchased | No current violation flagged |
| Vista Irrigation DistrictCA3710027 | 132,430 | Surface water | No current violation flagged |
| El Dorado Id - MainCA0910001 | 132,171 | Surface water | No current violation flagged |
| City Of Santa ClaraCA4310012 | 130,746 | Surface water purchased | No current violation flagged |
| City Of ClovisCA1010003 | 130,130 | Surface water | No current violation flagged |
| Palmdale Water Dist.CA1910102 | 126,804 | Surface water | No current violation flagged |
| Cwsc SalinasCA2710010 | 123,679 | Ground water | No current violation flagged |
| City Of VallejoCA4810007 | 121,420 | Surface water | No current violation flagged |
| City Of OrangeCA3010027 | 120,770 | Surface water purchased | No current violation flagged |
| City Of FairfieldCA4810003 | 120,377 | Surface water | Current health-based flag |
| City Of AntiochCA0710001 | 115,074 | Surface water | No current violation flagged |
| Cal-Water Service Co.-ChicoCA0410002 | 114,925 | Ground water | No current violation flagged |
| Golden State Wc - West Orange CountyCA3010022 | 114,379 | Surface water purchased | No current violation flagged |
| Vallecitos WdCA3710002 | 113,500 | Surface water purchased | Current monitoring/reporting flag |
| Ventura Water DepartmentCA5610017 | 113,500 | Surface water | No current violation flagged |
| Downey - City, Water Dept.CA1910034 | 110,556 | Ground water | No current violation flagged |
| Great Oaks Wc IncCA4310022 | 110,088 | Ground water | No current violation flagged |
| Azusa Light And WaterCA1910007 | 110,044 | Surface water | No current violation flagged |
| Mesa Water DistrictCA3010004 | 110,000 | Surface water purchased | No current violation flagged |
| San Bernardino Valley WdCA3610019 | 109,608 | Ground water | No current violation flagged |
| City Of Santa Maria Utilities DepartmentCA4210011 | 109,477 | Surface water purchased | No current violation flagged |
| East Valley Water DistrictCA3610064 | 108,629 | Surface water | No current violation flagged |
| Torrance-City, Water Dept.CA1910213 | 106,183 | Surface water purchased | No current violation flagged |
| Cal-Am Water CoronadoCA3710001 | 106,000 | Surface water purchased | No current violation flagged |
| Burbank-City, Water Dept.CA1910179 | 105,603 | Surface water purchased | No current violation flagged |
| City Of Daly CityCA4110013 | 104,901 | Surface water purchased | No current violation flagged |
| West Valley Water DistrictCA3610004 | 104,498 | Surface water | No current violation flagged |
| California Water Service - San MateoCA4110008 | 102,348 | Surface water purchased | No current violation flagged |
| City Of San Jose - Evg/Edv/CoyCA4310020 | 101,265 | Surface water purchased | No current violation flagged |
| Walnut Valley Water DistrictCA1910234 | 100,941 | Surface water purchased | No current violation flagged |
| Hesperia WdCA3610024 | 100,744 | Ground water | No current violation flagged |
| South Tahoe Pud - MainCA0910002 | 100,000 | Ground water | No current violation flagged |
| City Of VacavilleCA4810008 | 99,650 | Surface water | No current violation flagged |
| City Of Santa Barbara Water DepartmentCA4210010 | 99,323 | Surface water | No current violation flagged |
| Dublin San Ramon Services DistrictCA0110009 | 98,776 | Surface water purchased | No current violation flagged |
| California Water Service Co. - Herm/RedoCA1910134 | 96,853 | Surface water purchased | No current violation flagged |
| Tracy, City OfCA3910011 | 96,609 | Surface water | No current violation flagged |
| Carlsbad MwdCA3710005 | 95,158 | Surface water purchased | No current violation flagged |
| Ventura Wwd No. 8 - Simi ValleyCA5610023 | 94,738 | Surface water purchased | No current violation flagged |
| Santa Cruz Water DepartmentCA4410010 | 94,626 | Surface water | No current violation flagged |
| Padre Dam MwdCA3710037 | 93,980 | Surface water purchased | No current violation flagged |
| City Of MercedCA2410009 | 93,692 | Ground water | No current violation flagged |
| City Of Redwood CityCA4110022 | 92,819 | Surface water purchased | No current violation flagged |
| Cal Am Water Company - MontereyCA2710004 | 92,450 | Groundwater under influence of surface water | No current violation flagged |
| City Of WestminsterCA3010064 | 90,911 | Surface water purchased | No current violation flagged |
| Santa Monica-City, Water DivisionCA1910146 | 89,947 | Surface water purchased | No current violation flagged |
| City Of ReddingCA4510005 | 89,628 | Surface water | No current violation flagged |
| Placer Cwa - FoothillCA3110025 | 89,544 | Surface water | No current violation flagged |
| Olivenhain MwdCA3710029 | 86,458 | Surface water purchased | No current violation flagged |
| Chino, City OfCA3610012 | 86,435 | Surface water purchased | No current violation flagged |
| Western MwdCA3310049 | 86,062 | Surface water purchased | No current violation flagged |
| Manteca, City OfCA3910005 | 84,928 | Surface water purchased | No current violation flagged |
| Napa, City OfCA2810003 | 84,804 | Surface water | No current violation flagged |
| Indio Water AuthorityCA3310020 | 84,757 | Ground water | No current violation flagged |
| Goleta Water DistrictCA4210004 | 84,462 | Surface water | No current violation flagged |
| Yorba Linda Water DistrictCA3010037 | 84,292 | Surface water purchased | No current violation flagged |
| City Of Buena ParkCA3010003 | 81,998 | Surface water purchased | No current violation flagged |
| City Of MilpitasCA4310005 | 81,773 | Surface water purchased | No current violation flagged |
| City Of Mountain ViewCA4310007 | 81,501 | Surface water purchased | No current violation flagged |
| Folsom, City Of - MainCA3410014 | 80,969 | Surface water | No current violation flagged |
| Inglewood- City, Water Dept.CA1910051 | 80,824 | Surface water purchased | No current violation flagged |
| City Of AlhambraCA1910001 | 79,776 | Surface water purchased | No current violation flagged |
| Upland, City OfCA3610050 | 78,376 | Surface water | No current violation flagged |
| Redlands City Mud-Water DivCA3610037 | 78,025 | Surface water | No current violation flagged |
| City Of PleasantonCA0110008 | 76,689 | Surface water purchased | No current violation flagged |
| South Gate-City, Water Dept.CA1910152 | 76,443 | Surface water purchased | No current violation flagged |
| Chino Hills, City OfCA3610036 | 76,414 | Surface water purchased | No current violation flagged |
| Compton-City, Water Dept.CA1910026 | 74,877 | Surface water purchased | No current violation flagged |
| Desert Water AgencyCA3310005 | 74,807 | Surface water | No current violation flagged |
| Turlock, City OfCA5010019 | 72,682 | Surface water purchased | No current violation flagged |
| Liberty Utilities - Bellflower-NorwalkCA1910211 | 72,624 | Surface water purchased | No current violation flagged |
| Las Virgenes MwdCA1910225 | 72,602 | Surface water | No current violation flagged |
| Tulare, City OfCA5410015 | 72,241 | Ground water | No current violation flagged |
| California Water Service Co. - Palos VerCA1910104 | 71,452 | Surface water purchased | No current violation flagged |
| City Of Yuba CityCA5110002 | 70,256 | Surface water | No current violation flagged |
| Cwsc Los Altos SuburbanCA4310001 | 69,973 | Surface water purchased | No current violation flagged |
| Valley County Water Dist.CA1910009 | 68,871 | Ground water | No current violation flagged |
| City Of Newport BeachCA3010023 | 68,572 | Surface water purchased | No current violation flagged |
| Lodi, City OfCA3910004 | 68,272 | Surface water | No current violation flagged |
| Citrus Heights Water DistrictCA3410006 | 67,818 | Surface water purchased | No current violation flagged |
| City Of DavisCA5710001 | 67,457 | Surface water purchased | No current violation flagged |
| City Of Palo AltoCA4310009 | 67,231 | Surface water purchased | No current violation flagged |
| Lynwood-City, Water Dept.CA1910079 | 66,967 | Surface water purchased | No current violation flagged |
| Beaumont Cherry Valley WdCA3310002 | 66,841 | Ground water | No current violation flagged |
| Cal American Water CoCA5610040 | 66,809 | Surface water purchased | No current violation flagged |
| City Of TustinCA3010046 | 66,600 | Surface water purchased | No current violation flagged |
| City Of MaderaCA2010002 | 66,560 | Ground water | No current violation flagged |
| Lakewood - City, Water Dept.CA1910239 | 66,135 | Ground water | No current violation flagged |
| Suburban Water Systems-WhittierCA1910174 | 66,045 | Ground water | No current violation flagged |
| Watsonville, City OfCA4410011 | 65,231 | Surface water | No current violation flagged |
| BrentwoodCA0710004 | 64,513 | Surface water purchased | No current violation flagged |
| Liberty Utilities (Av Ranchos) Corp.CA3610003 | 64,469 | Ground water | No current violation flagged |
| California Water Service-S San FranciscoCA4110009 | 64,146 | Surface water purchased | No current violation flagged |
| Porterville, City OfCA5410010 | 63,487 | Ground water | Current health-based flag |
| Gswc - Florence/GrahamCA1910077 | 63,472 | Surface water purchased | No current violation flagged |
| City Of La HabraCA3010018 | 63,118 | Surface water purchased | No current violation flagged |
| City Of PittsburgCA0710008 | 62,500 | Surface water purchased | No current violation flagged |
| Monterey Park-City, Water Dept.CA1910092 | 62,183 | Ground water | Current health-based flag |
| Hanford, City OfCA1610003 | 62,127 | Ground water | No current violation flagged |
| North Marin Water DistrictCA2110003 | 61,691 | Surface water | No current violation flagged |
| City Of WoodlandCA5710006 | 61,462 | Surface water purchased | No current violation flagged |
| California Water Service - Bear GulchCA4110006 | 61,431 | Surface water | No current violation flagged |
| Petaluma, City OfCA4910006 | 60,781 | Ground water | No current violation flagged |
| California Water Service - LivermoreCA0110003 | 60,414 | Surface water purchased | No current violation flagged |
| City Of GilroyCA4310004 | 59,203 | Ground water | No current violation flagged |
| Suburban Water Systems-La MiradaCA1910059 | 56,793 | Surface water purchased | No current violation flagged |
| City Of Fountain ValleyCA3010069 | 56,747 | Surface water purchased | No current violation flagged |
| Gswc-San DimasCA1910142 | 56,538 | Surface water purchased | No current violation flagged |
| Alco Water ServiceCA2710001 | 56,253 | Ground water | No current violation flagged |
| Rowland Water DistrictCA1910194 | 56,100 | Surface water purchased | No current violation flagged |
| Monte Vista WdCA3610029 | 56,017 | Surface water purchased | No current violation flagged |
| Paramount - City, Water Dept.CA1910105 | 55,200 | Surface water purchased | No current violation flagged |
| Gswc - Bell, Bell GardensCA1910011 | 55,050 | Surface water purchased | No current violation flagged |
| Cal Am - Suburban RosemontCA3410010 | 54,793 | Surface water purchased | No current violation flagged |
| City Of LincolnCA3110004 | 54,538 | Surface water purchased | No current violation flagged |
| Ceres, City OfCA5010028 | 54,513 | Surface water purchased | Current health-based flag |
| Rialto, City OfCA3610038 | 54,453 | Surface water purchased | No current violation flagged |
| City Of West SacramentoCA5710003 | 53,355 | Surface water | Current health-based flag |
| City Of Thousand Oaks Water DepartmentCA5610020 | 53,157 | Surface water purchased | No current violation flagged |
| Lake Hemet MwdCA3310022 | 52,913 | Ground water | No current violation flagged |
| Yucaipa Valley Water DistrictCA3610055 | 52,010 | Surface water | Current health-based flag |
| El Toro Water DistrictCA3010079 | 51,800 | Surface water purchased | No current violation flagged |
| City Of San ClementeCA3010036 | 51,545 | Surface water purchased | No current violation flagged |
| Delano, City OfCA1510005 | 51,428 | Ground water | No current violation flagged |
| City Of ArcadiaCA1910003 | 51,361 | Ground water | No current violation flagged |
| Cal Am - ParkwayCA3410017 | 50,573 | Surface water purchased | No current violation flagged |
| Gswc - ArtesiaCA1910004 | 50,415 | Ground water | No current violation flagged |
| Golden State Wc - Placentia/Yorba LindaCA3010035 | 50,381 | Surface water purchased | No current violation flagged |
| Whittier-City, Water Dept.CA1910173 | 49,954 | Ground water | No current violation flagged |
| Glendora-City, Water Dept.CA1910044 | 49,934 | Surface water purchased | No current violation flagged |
| Poway, City OfCA3710015 | 49,888 | Surface water | No current violation flagged |
| Uc - DavisCA5710009 | 49,616 | Surface water purchased | No current violation flagged |
| City Of BreaCA3010002 | 48,479 | Surface water purchased | No current violation flagged |
| Cal Am - Lincoln OaksCA3410013 | 48,094 | Surface water purchased | No current violation flagged |
| Cal/Am Water Company - San MarinoCA1910139 | 47,995 | Surface water purchased | No current violation flagged |
| San Luis Obispo Water DepartmentCA4010009 | 47,788 | Surface water | No current violation flagged |
| Cerritos - City, Water Dept.CA1910019 | 47,475 | Surface water purchased | Current monitoring/reporting flag |
| City Of Los BanosCA2410005 | 47,419 | Ground water | Current health-based flag |
| City Of Morgan HillCA4310006 | 47,374 | Ground water | No current violation flagged |
| Golden State Water Co. - CordovaCA3410015 | 47,161 | Surface water | No current violation flagged |
| Camarillo Water DeptCA5610019 | 46,824 | Surface water purchased | No current violation flagged |
| Colton, City OfCA3610014 | 46,525 | Ground water | No current violation flagged |
| Bellflower - Somerset MwcCA1910013 | 46,300 | Surface water purchased | No current violation flagged |
| City Of San Jose - Nsj/AlvisoCA4310019 | 45,559 | Surface water purchased | No current violation flagged |
| Golden State Water Company - Simi ValleyCA5610059 | 45,128 | Surface water purchased | No current violation flagged |
| Oildale MwcCA1510015 | 44,899 | Surface water purchased | Current monitoring/reporting flag |
| Hawthorne-City Water Dept.CA1910047 | 44,718 | Surface water purchased | No current violation flagged |
| Rohnert Park, City OfCA4910014 | 43,821 | Ground water | No current violation flagged |
| Elk Grove Water DistrictCA3410008 | 43,813 | Surface water purchased | No current violation flagged |
| El Centro, City OfCA1310004 | 43,772 | Surface water purchased | No current violation flagged |
| Coachella Water AuthorityCA3310007 | 43,590 | Ground water | No current violation flagged |
| Mission Springs WdCA3310008 | 43,484 | Ground water | No current violation flagged |
| Diablo Water DistrictCA0710007 | 43,357 | Surface water purchased | No current violation flagged |
| Gswc - NorwalkCA1910098 | 43,167 | Surface water purchased | No current violation flagged |
| City Of San BrunoCA4110023 | 42,631 | Surface water purchased | No current violation flagged |
| Camp Pendleton (South)CA3710702 | 42,219 | Ground water | No current violation flagged |
| Indian Wells Valley W.D.CA1510017 | 41,580 | Ground water | No current violation flagged |
| Carmichael Water DistrictCA3410004 | 41,193 | Groundwater under influence of surface water | No current violation flagged |
| South Coast Water DistrictCA3010042 | 41,118 | Surface water purchased | No current violation flagged |
| California State University FresnoCA1010339 | 41,000 | Ground water | No current violation flagged |
| Soquel Creek Water DistrictCA4410017 | 40,809 | Surface water purchased | No current violation flagged |
| Pico Rivera - City, Water Dept.CA1910042 | 40,600 | Ground water | No current violation flagged |
| Lompoc-City Water Utility DivCA4210006 | 40,473 | Surface water | No current violation flagged |
| San Dieguito WdCA3710021 | 40,405 | Surface water purchased | No current violation flagged |
| Calexico, City OfCA1310002 | 40,357 | Surface water purchased | Current health-based flag |
| Beverly Hills-City, Water Dept.CA1910156 | 40,121 | Surface water purchased | No current violation flagged |
| Adelanto, City OfCA3610001 | 39,930 | Ground water | No current violation flagged |
| Gswc - ClaremontCA1910024 | 39,730 | Surface water purchased | No current violation flagged |
| Santa Margarita Water District-Id9CA3010030 | 39,684 | Surface water purchased | No current violation flagged |
| San Gabriel County WdCA1910144 | 39,345 | Ground water | No current violation flagged |
| City Of LivermoreCA0110011 | 38,892 | Surface water purchased | No current violation flagged |
| North Coast County Water DistCA4110025 | 38,546 | Surface water purchased | No current violation flagged |
| Marina Coast Water DistrictCA2710017 | 38,377 | Ground water | No current violation flagged |
| Gswc - Culver CityCA1910030 | 38,233 | Surface water purchased | No current violation flagged |
| Tejon Castac Wd - I5 & Laval RdCA1503341 | 38,125 | Surface water | No current violation flagged |
| Monrovia-City, Water Dept.CA1910090 | 37,931 | Ground water | No current violation flagged |
| Vaughn Wc IncCA1510029 | 37,189 | Ground water | No current violation flagged |
| Ramona Municipal WdCA3710019 | 37,047 | Surface water purchased | No current violation flagged |
| Nas North Island & Nab CoronadoCA3710750 | 36,990 | Surface water purchased | No current violation flagged |
| Rubidoux Community SdCA3310044 | 36,827 | Ground water | No current violation flagged |
| Truckee-Donner Pud, MainCA2910003 | 36,730 | Ground water | No current violation flagged |
| Estero Municipal Improvement DistrictCA4110021 | 36,556 | Surface water purchased | No current violation flagged |
| Fair Oaks Water DistrictCA3410009 | 36,226 | Surface water purchased | No current violation flagged |
| Stanford UniversityCA4310013 | 35,853 | Surface water purchased | No current violation flagged |
| Crescenta Valley CwdCA1910028 | 35,841 | Surface water purchased | No current violation flagged |
| Cal Am - AntelopeCA3410031 | 35,534 | Surface water purchased | No current violation flagged |
| Ventura Cwwd No. 1 - MoorparkCA5610018 | 35,514 | Surface water purchased | No current violation flagged |
| Lakeside WdCA3710013 | 35,500 | Surface water purchased | No current violation flagged |
| California Water Service - San CarlosCA4110007 | 35,344 | Surface water purchased | No current violation flagged |
| Fallbrook PudCA3710008 | 35,237 | Surface water purchased | No current violation flagged |
| City Of LathropCA3910015 | 35,080 | Surface water purchased | No current violation flagged |
| Golden State Water Company - OrcuttCA4210016 | 34,102 | Surface water purchased | No current violation flagged |
| Hemet, City OfCA3310016 | 33,828 | Surface water purchased | No current violation flagged |
| Covina-City, Water Dept.CA1910127 | 33,300 | Surface water purchased | No current violation flagged |
| Camrosa Water DistrictCA5610063 | 32,700 | Surface water purchased | No current violation flagged |
| Manhattan Beach-City, Water Dept.CA1910083 | 32,697 | Surface water purchased | No current violation flagged |
| Golden State Water Co - BarstowCA3610043 | 32,547 | Ground water | No current violation flagged |
| East Niles CsdCA1510006 | 32,517 | Surface water purchased | Current health-based flag |
| Los Angeles Cwwd 29 & 80-MalibuCA1910204 | 32,348 | Surface water purchased | No current violation flagged |
| Banning, City OfCA3310006 | 31,680 | Ground water | No current violation flagged |
| City Of BurlingameCA4110003 | 31,451 | Surface water purchased | No current violation flagged |
| La Verne, City WdCA1910062 | 31,334 | Surface water purchased | No current violation flagged |
| City Of Paso Robles Water DivisionCA4010007 | 31,176 | Surface water | No current violation flagged |
| City Of Santa PaulaCA5610011 | 31,018 | Ground water | No current violation flagged |
| City Of MartinezCA0710006 | 30,997 | Surface water purchased | No current violation flagged |
| Scwa Mather-SunriseCA3410704 | 30,825 | Surface water purchased | Current health-based flag |
| Rincon Del Diablo Mwd (Id-1)CA3710018 | 30,757 | Surface water purchased | No current violation flagged |
| Atascadero Mutual Water CoCA4010002 | 30,618 | Ground water | No current violation flagged |
| Mid-Peninsula Water DistrictCA4110001 | 30,609 | Surface water purchased | No current violation flagged |
| Valley Center MwdCA3710026 | 29,938 | Surface water purchased | No current violation flagged |
| Calif State Polytechnical Univ - PomonaCA1910022 | 29,854 | Surface water | Current serious-violator flag |
| San Juan Water DistrictCA3410021 | 29,598 | Surface water | No current violation flagged |
| City Of East Palo AltoCA4110024 | 29,519 | Surface water purchased | No current violation flagged |
| City Of AtwaterCA2410001 | 29,479 | Ground water | No current violation flagged |
| Suisun-Solano Water AuthorityCA4810005 | 29,105 | Surface water | Current health-based flag |
| Pechanga090605013 | 29,100 | Surface water purchased | Other current violation flag |
| Vernon-City, Water Dept.CA1910167 | 28,112 | Surface water purchased | No current violation flagged |
| Placer Cwa - Auburn/BowmanCA3110005 | 27,294 | Surface water | No current violation flagged |
| Dinuba, City OfCA5410002 | 27,281 | Ground water | Current health-based flag |
| Lemoore, City OfCA1610005 | 27,185 | Ground water | Current monitoring/reporting flag |
| City Of BeniciaCA4810001 | 27,131 | Surface water | No current violation flagged |
| Eureka, City OfCA1210004 | 27,078 | Ground water purchased | No current violation flagged |
| Gswc-South ArcadiaCA1910212 | 27,072 | Ground water | No current violation flagged |
| Brawley, City OfCA1310001 | 26,862 | Surface water purchased | No current violation flagged |
| Montebello Land & Water Co.CA1910091 | 26,554 | Ground water | No current violation flagged |
| Galt, City OfCA3410011 | 26,536 | Ground water | No current violation flagged |
| Cws - SelmaCA1010024 | 26,517 | Ground water | No current violation flagged |
| Hi Desert WdCA3610073 | 26,411 | Ground water | Current monitoring/reporting flag |
| Liberty Utilities - ComptonCA1910021 | 26,371 | Surface water purchased | No current violation flagged |
| City Of SangerCA1010029 | 26,357 | Ground water | Current health-based flag |
| Gswc-South San GabrielCA1910223 | 26,240 | Surface water purchased | No current violation flagged |
| Big Bear Lake Dwp - Big Bear SystemCA3610044 | 26,132 | Ground water | No current violation flagged |
| Reedley, City OfCA1010027 | 26,076 | Ground water | No current violation flagged |
| Hollister, City OfCA3510001 | 26,017 | Surface water purchased | No current violation flagged |
| Windsor, Town OfCA4910017 | 25,561 | Ground water | No current violation flagged |
| City Of South PasadenaCA1910154 | 25,329 | Surface water purchased | No current violation flagged |
| Sunny Slope Water Co.CA1910157 | 25,252 | Ground water | No current violation flagged |
| Loma Linda, City OfCA3610013 | 25,129 | Ground water | No current violation flagged |
| Norco, City OfCA3310025 | 25,068 | Surface water purchased | No current violation flagged |
| Orchard Dale Water DistrictCA1910101 | 25,000 | Ground water purchased | No current violation flagged |
| Patterson, City OfCA5010017 | 24,977 | Ground water | No current violation flagged |
| Sunnyslope County Water DistCA3510003 | 24,954 | Surface water purchased | No current violation flagged |
| City Of Mountain HouseCA3910027 | 24,948 | Surface water | No current violation flagged |
| City Of Seal BeachCA3010041 | 24,937 | Surface water purchased | No current violation flagged |
| Riverbank, City OfCA5010018 | 24,834 | Ground water | No current violation flagged |
| Cal-Am Water Company - DuarteCA1910186 | 24,773 | Ground water | No current violation flagged |
| Liberty Utilities - LynwoodCA1910161 | 24,701 | Surface water purchased | No current violation flagged |
| Phelan Pinon Hills CsdCA3610120 | 24,285 | Ground water | No current violation flagged |
| San Fernando-City, Water Dept.CA1910143 | 23,946 | Ground water | No current violation flagged |
| Golden State Water Company - Bay PointCA0710002 | 23,731 | Surface water purchased | No current violation flagged |
| Rainbow Municipal WdCA3710016 | 23,536 | Surface water purchased | No current violation flagged |
| Oakdale, City OfCA5010014 | 23,235 | Ground water | Current health-based flag |
| Valley Of The Moon Water DistrictCA4910013 | 23,107 | Ground water | No current violation flagged |
| El Monte-City, Water Dept.CA1910038 | 22,968 | Ground water | No current violation flagged |
| Corcoran, City OfCA1610004 | 22,808 | Ground water | No current violation flagged |
| City Of MillbraeCA4110018 | 22,795 | Surface water purchased | No current violation flagged |
| Cws - North GardenCA1510055 | 22,762 | Surface water | No current violation flagged |
| Wasco, City OfCA1510021 | 22,757 | Ground water | No current violation flagged |
| South Feather W&P - Miners RanchCA0410006 | 22,664 | Surface water | No current violation flagged |
| Menlo Park Municipal WaterCA4110017 | 22,362 | Surface water purchased | No current violation flagged |
| Pico WdCA1910125 | 22,051 | Ground water | No current violation flagged |
| Temescal Valley Water DistrictCA3310074 | 21,971 | Surface water purchased | Current monitoring/reporting flag |
| Shafter, City OfCA1510019 | 21,915 | Ground water | No current violation flagged |
| Linda County Water DistrictCA5810002 | 21,654 | Ground water | No current violation flagged |
| Imperial, City OfCA1310006 | 21,591 | Surface water purchased | Current health-based flag |
| Santa Fe I.D.CA3710023 | 21,578 | Surface water | No current violation flagged |
| American Canyon, City OfCA2810005 | 21,437 | Surface water | Current monitoring/reporting flag |
| Port Hueneme City Water DeptCA5610009 | 21,407 | Surface water purchased | No current violation flagged |
| San Lorenzo Valley Water DistCA4410014 | 21,145 | Surface water | Current health-based flag |
| Arcata, City OfCA1210001 | 20,875 | Ground water purchased | No current violation flagged |
| Cal/Am Water Company - Baldwin HillsCA1910052 | 20,724 | Surface water purchased | No current violation flagged |
| West Kern Water DistrictCA1510022 | 20,500 | Ground water | No current violation flagged |
| Norwalk - City, Water Dept.CA1910191 | 20,283 | Surface water purchased | No current violation flagged |
| Lomita-City, Water Dept.CA1910073 | 20,256 | Surface water purchased | No current violation flagged |
| Riverside Highland Water CompanyCA3610057 | 20,188 | Ground water | Current monitoring/reporting flag |
| Humboldt C.S.D.CA1210009 | 19,807 | Ground water | No current violation flagged |
| Arvin Community Services DistCA1510001 | 19,669 | Ground water | Current health-based flag |
| California Water Service Co - WestlakeCA5610016 | 19,533 | Surface water purchased | No current violation flagged |
| Soledad, City OfCA2710011 | 19,455 | Ground water | No current violation flagged |
| Santa Fe Springs - City, Water Dept.CA1910245 | 19,219 | Surface water purchased | No current violation flagged |
| Quartz Hill Water Dist.CA1910130 | 19,100 | Surface water purchased | No current violation flagged |
| Lamont Public Utility DistCA1510012 | 19,057 | Ground water | No current violation flagged |
| Greenfield, City OfCA2710008 | 18,967 | Ground water | Current monitoring/reporting flag |
| San Jacinto, City OfCA3310032 | 18,950 | Ground water | No current violation flagged |
| Coastside County Water DistrictCA4110011 | 18,940 | Surface water | No current violation flagged |
| Twentynine Palms Water DistrictCA3610049 | 18,795 | Ground water | No current violation flagged |
| Bella Vista Water DistrictCA4510014 | 18,612 | Surface water | No current violation flagged |
| Nps GgnraCA2110350 | 18,447 | Surface water purchased | No current violation flagged |
| Laguna Beach County WdCA3010017 | 18,404 | Surface water purchased | No current violation flagged |
| California Water Service Co.-Travis AfbCA4810701 | 18,111 | Surface water purchased | No current violation flagged |
| City Of Arroyo Grande Utilities DivisionCA4010001 | 17,963 | Surface water purchased | No current violation flagged |
| Rosamond CsdCA1510018 | 17,711 | Surface water purchased | No current violation flagged |
| Western Mwd - Murrieta DivisionCA3310036 | 17,453 | Surface water purchased | No current violation flagged |
| Bakman Water CompanyCA1010001 | 17,393 | Ground water | Current health-based flag |
| Coalinga-CityCA1010004 | 17,277 | Surface water | No current violation flagged |
| City Of Crescent CityCA0810001 | 17,262 | Ground water | No current violation flagged |
| Kerman, City OfCA1010018 | 17,256 | Ground water | No current violation flagged |
| Nevada Id - E. George, Banner MountainCA2910004 | 17,154 | Surface water | No current violation flagged |
| Mckinleyville C.S.D.CA1210016 | 16,900 | Ground water purchased | No current violation flagged |
| Orange Vale Water CompanyCA3410016 | 16,861 | Surface water purchased | No current violation flagged |
| Town Of Discovery BayCA0710009 | 16,790 | Ground water | No current violation flagged |
| Pinedale County Water DistrictCA1010026 | 16,736 | Ground water | No current violation flagged |
| Ukiah, City OfCA2310003 | 16,607 | Surface water | Current monitoring/reporting flag |
| Olivehurst Public U.D.CA5810003 | 16,595 | Ground water | No current violation flagged |
| El Segundo-City, Water Dept.CA1910040 | 16,445 | Surface water purchased | No current violation flagged |
| Fillmore Water DeptCA5610002 | 16,419 | Ground water | No current violation flagged |
| City Of CupertinoCA4310018 | 16,336 | Surface water purchased | No current violation flagged |
| Cwsc King CityCA2710009 | 16,334 | Ground water | No current violation flagged |
| Nasa Ames Research CenterCA4300997 | 16,273 | Surface water purchased | No current violation flagged |
| Walnut Park Mutual Water Co.CA1910169 | 16,180 | Ground water | No current violation flagged |
| Lincoln Avenue Water Co.CA1910063 | 16,088 | Surface water | No current violation flagged |
| Usmc - 29 PalmsCA3610703 | 16,067 | Ground water | No current violation flagged |
| Morongo090600142 | 16,000 | Ground water | No current violation flagged |
| Carpinteria Valley Water DistrictCA4210001 | 15,996 | Surface water purchased | No current violation flagged |
| City Of La PalmaCA3010100 | 15,948 | Surface water purchased | No current violation flagged |
| Ripon, City OfCA3910007 | 15,741 | Ground water | No current violation flagged |
| US Army Fort IrwinCA3610705 | 15,701 | Ground water | No current violation flagged |
| Cal Am - Fruitridge VistaCA3410023 | 15,652 | Surface water purchased | No current violation flagged |
| Rio Linda/Elverta Community Water DistCA3410018 | 15,460 | Ground water | No current violation flagged |
| Northstar C.S.D.CA3110028 | 15,452 | Surface water | No current violation flagged |
| Huntington Park-City, Water Dept.CA1910049 | 15,437 | Surface water purchased | No current violation flagged |
| Loma Linda UniversityCA3600152 | 15,368 | Ground water | No current violation flagged |
| South Montebello Irrigation Dist.CA1910153 | 15,021 | Ground water | No current violation flagged |
| California Mens ColonyCA4010830 | 15,000 | Surface water | No current violation flagged |
| Lemoore Naval Air StationCA1610700 | 15,000 | Surface water | No current violation flagged |
| American Water O&M, Llc - VsfbCA4210700 | 14,971 | Surface water purchased | No current violation flagged |
| Sbdno County Service Area 64CA3610121 | 14,911 | Ground water | No current violation flagged |
| City Of LivingstonCA2410004 | 14,894 | Ground water | Current health-based flag |
| City Of Red BluffCA5210004 | 14,710 | Ground water | No current violation flagged |
| City Of ParlierCA1010025 | 14,576 | Ground water | Current health-based flag |
| City Of Modesto - SalidaCA5010005 | 14,537 | Surface water purchased | No current violation flagged |
| Pala North090605153 | 14,280 | Ground water | Current serious-violator flag |
| California City, City OfCA1510032 | 14,198 | Surface water purchased | Other current violation flag |
| Mcfarland, City OfCA1510013 | 14,161 | Ground water | Current monitoring/reporting flag |
| Nevada Id - Loma RicaCA2910006 | 14,072 | Surface water | No current violation flagged |
| Tract 180 Mutual Water Co.CA1910159 | 14,000 | Ground water | No current violation flagged |
| Chowchilla City Water DeptCA2010001 | 13,916 | Ground water | No current violation flagged |
| Triunfo Water & Sanitation DistrictCA5610043 | 13,898 | Surface water purchased | No current violation flagged |
| Nipomo Comm Services DistCA4010026 | 13,771 | Surface water purchased | No current violation flagged |
| Morro Bay Pw Dept - Water DivisionCA4010011 | 13,757 | Surface water purchased | No current violation flagged |
| Avenal, City OfCA1610002 | 13,696 | Surface water | Current health-based flag |
| Trabuco Canyon Water DistrictCA3010094 | 13,659 | Surface water purchased | No current violation flagged |
| Kingsburg, City OfCA1010019 | 13,540 | Ground water | No current violation flagged |
| Westborough Water DistrictCA4110027 | 13,486 | Surface water purchased | No current violation flagged |
| Tud - Upper Basin Water SystemCA5510012 | 13,280 | Surface water | No current violation flagged |
| Palomar Christian Conference CenterCA3701982 | 13,050 | Ground water | No current violation flagged |
| Indian Hills CampCA3701476 | 13,032 | Ground water | No current violation flagged |
| Muscoy Mwc No. 1CA3610031 | 13,000 | Ground water | No current violation flagged |
| Sbdno County Service Area 70JCA3610125 | 12,843 | Ground water | No current violation flagged |
| Yocha Dehe Potable Water System090605107 | 12,800 | Ground water | No current violation flagged |
| Big Bear City CsdCA3610008 | 12,738 | Ground water | No current violation flagged |
| City Of Grover Beach Public Works DeptCA4010004 | 12,701 | Surface water | No current violation flagged |
| Lindsay, City OfCA5410006 | 12,659 | Surface water | No current violation flagged |
| Camp Pendleton (North)CA3710700 | 12,651 | Ground water | No current violation flagged |
| Los Angeles Cwwd 40, Reg. 38-Lake LaCA1910005 | 12,568 | Surface water purchased | No current violation flagged |
| City Of DixonCA4810009 | 12,540 | Ground water | No current violation flagged |
| Cal-Water Service Co.-MarysvilleCA5810001 | 12,419 | Ground water | No current violation flagged |
| Sycuan090605024 | 12,350 | Surface water purchased | No current violation flagged |
| City Of Newman-Water DepartmentCA5010013 | 12,207 | Ground water | No current violation flagged |
| Thermalito Water & Sewer DistCA0410008 | 12,136 | Surface water | No current violation flagged |
| Fortuna, City OfCA1210006 | 12,133 | Ground water | No current violation flagged |
| Montecito Water DistCA4210007 | 11,962 | Surface water | No current violation flagged |
| Signal Hill - City, Water Dept.CA1910149 | 11,848 | Surface water purchased | No current violation flagged |
| Town Of HillsboroughCA4110016 | 11,766 | Surface water purchased | No current violation flagged |
| Sonoma, City OfCA4910012 | 11,725 | Ground water | Current monitoring/reporting flag |
| Crestline Village Cwd - Division 10CA3610015 | 11,650 | Surface water purchased | No current violation flagged |
| Greenfield County WdCA1510024 | 11,590 | Ground water | No current violation flagged |
| Ccwd - Ebbetts PassCA0510016 | 11,545 | Surface water | No current violation flagged |
| Los Angeles Cwwd 40, R 24,27,33-PearblsmCA1910203 | 11,509 | Surface water purchased | No current violation flagged |
| City Of Bell GardensCA1910108 | 11,437 | Surface water purchased | No current violation flagged |
| Mendota, City OfCA1010021 | 11,404 | Ground water | No current violation flagged |
| Edwards Afb - Main BaseCA1510701 | 11,316 | Surface water purchased | No current violation flagged |
| Red Hawk Casino - Shingle Springs090600058 | 11,268 | Surface water purchased | Current monitoring/reporting flag |
| Scotts Valley Water DistrictCA4410013 | 11,197 | Ground water | No current violation flagged |
| Exeter, City OfCA5410003 | 11,169 | Ground water | No current violation flagged |
| City Of AndersonCA4510001 | 11,147 | Ground water | Current health-based flag |
| Cal-Water Service Co.-OrovilleCA0410005 | 11,106 | Surface water | No current violation flagged |
| Tud - Sonora/Jamestown Water SystemCA5510001 | 11,054 | Surface water | No current violation flagged |
| Casitas Municipal Water DistCA5610024 | 11,005 | Surface water | No current violation flagged |
| Sierra Madre-City, Water Dept.CA1910148 | 11,000 | Surface water purchased | No current violation flagged |
| Sonoma State UniversityCA4910027 | 10,986 | Ground water | No current violation flagged |
| Healdsburg, City OfCA4910005 | 10,985 | Groundwater under influence of surface water | No current violation flagged |
| Del Oro Water Co.-Paradise PinesCA0410011 | 10,940 | Surface water purchased | No current violation flagged |
| Gswc - WillowbrookCA1910072 | 10,793 | Surface water purchased | No current violation flagged |
| Table Mountain Rancheria090600154 | 10,675 | Surface water | No current violation flagged |
| California Institution For MenCA3610850 | 10,667 | Ground water | Current health-based flag |
| City Of Shasta LakeCA4510006 | 10,657 | Surface water | No current violation flagged |
| California Water Service Co. - DixonCA4810002 | 10,623 | Ground water | No current violation flagged |
| City Of Rio VistaCA4810004 | 10,489 | Ground water | No current violation flagged |
| Plumas LakeCA5805001 | 10,464 | Ground water | No current violation flagged |
| Cloverdale, City OfCA4910002 | 10,398 | Groundwater under influence of surface water | Current monitoring/reporting flag |
| Farmersville, City OfCA5410004 | 10,243 | Ground water | Current health-based flag |
| South Mesa WcCA3310017 | 10,108 | Ground water | No current violation flagged |
| Scwa - Arden Park VistaCA3410002 | 10,101 | Ground water | Current health-based flag |
| Valley Water Co.CA1910166 | 10,070 | Surface water purchased | No current violation flagged |
| Cal-Am Water Company - East PasadenaCA1910020 | 9,949 | Ground water | No current violation flagged |
| Lake Henshaw Resort Inc.CA3700900 | 9,913 | Ground water | No current violation flagged |
| Ccwd - Jenny LindCA0510006 | 9,861 | Surface water | No current violation flagged |
| Golden Hills CsdCA1510045 | 9,857 | Ground water | No current violation flagged |
| Blythe - City OfCA3310003 | 9,798 | Ground water | No current violation flagged |
| Winton Water & Sanitary DistCA2410010 | 9,745 | Ground water | Current health-based flag |
| San Gabriel Valley Water Co-Montebello 1CA1910189 | 9,630 | Ground water purchased | No current violation flagged |
| Viejas Community System090600158 | 9,600 | Ground water | Current monitoring/reporting flag |
| City Of Orange CoveCA1010023 | 9,525 | Surface water | Current health-based flag |
| Myoma Dunes Mutual Water CompanyCA3310051 | 9,445 | Ground water | No current violation flagged |
| Georgetown Divide PudCA0910013 | 9,434 | Surface water | No current violation flagged |
| Huron, City OfCA1010044 | 9,306 | Surface water | Current serious-violator flag |
| La Canada Irrigation Dist.CA1910054 | 9,300 | Surface water purchased | No current violation flagged |
| City Of Live OakCA5110001 | 9,285 | Ground water | No current violation flagged |
| California State FairCA3410026 | 9,280 | Ground water | No current violation flagged |
| Placerville, City Of - MainCA0910003 | 9,224 | Surface water purchased | No current violation flagged |
| Rubio Canon Land & Water AssociationCA1910140 | 9,215 | Surface water | No current violation flagged |
| Paradise Irrigation DistrictCA0410007 | 9,142 | Surface water | No current violation flagged |
| Nevada Id - Lake WildwoodCA2910023 | 9,108 | Surface water | No current violation flagged |
| Tehachapi, City OfCA1510020 | 9,094 | Ground water | Current health-based flag |
| Clear Creek Csd-AndersonCA4510016 | 8,900 | Surface water | No current violation flagged |
| Guadalupe Water DepartmentCA4210003 | 8,897 | Surface water purchased | No current violation flagged |
| Cal Am - West PlacerCA3110150 | 8,861 | Surface water purchased | No current violation flagged |
| Awa Buckhorn PlantCA0310012 | 8,791 | Surface water | No current violation flagged |
| City Of WaterfordCA5010006 | 8,788 | Ground water | No current violation flagged |
| Needles, City OfCA3610032 | 8,766 | Ground water | No current violation flagged |
| Tract 349 Mutual Water Co.CA1910160 | 8,700 | Ground water | No current violation flagged |
| Naval Base Ventura County, Port HuenemeCA5610701 | 8,625 | Surface water purchased | No current violation flagged |
| Gonzales, City OfCA2710007 | 8,327 | Ground water | No current violation flagged |
| Orosi Public Utility DistrictCA5410008 | 8,300 | Ground water | No current violation flagged |
| City Of OrlandCA1110001 | 8,298 | Ground water | Current monitoring/reporting flag |
| City Of CorningCA5210001 | 8,244 | Ground water | Current monitoring/reporting flag |
| La Puente Valley CwdCA1910060 | 8,243 | Ground water | No current violation flagged |
| Mammoth CwdCA2610001 | 8,234 | Surface water | No current violation flagged |
| Gswc - HollydaleCA1910195 | 8,099 | Ground water | No current violation flagged |
| Firebaugh CityCA1010005 | 8,096 | Ground water | No current violation flagged |
| Pismo Beach Water DepartmentCA4010008 | 8,036 | Surface water purchased | No current violation flagged |
| Templeton CsdCA4010019 | 8,011 | Ground water | No current violation flagged |
| California-American Larkfield (Puc)CA4910023 | 7,913 | Ground water | No current violation flagged |
| Kirkwood Meadows Public Utility DistrictCA0210002 | 7,851 | Ground water | No current violation flagged |
| Woodlake, City OfCA5410020 | 7,846 | Ground water | No current violation flagged |
| Florin County Water DistrictCA3410033 | 7,831 | Ground water | Current monitoring/reporting flag |
| Yreka, City OfCA4710011 | 7,825 | Surface water | Current health-based flag |
| City Of SusanvilleCA1810001 | 7,811 | Ground water | No current violation flagged |
| Delhi CwdCA2410006 | 7,784 | Ground water | Current monitoring/reporting flag |
| Valencia Heights Water Co.CA1910163 | 7,775 | Surface water purchased | No current violation flagged |
| Highlands Mutual Water CompanyCA1710003 | 7,772 | Surface water | No current violation flagged |
| Western Heights Water CompanyCA3610053 | 7,705 | Surface water purchased | No current violation flagged |
| Earlimart PudCA5410021 | 7,679 | Ground water | Current health-based flag |
| Oceano Comm Services Dist.CA4010005 | 7,601 | Surface water purchased | No current violation flagged |
| Sebastopol, City OfCA4910011 | 7,522 | Ground water | No current violation flagged |
| Castroville Community Services DistrictCA2710005 | 7,515 | Ground water | No current violation flagged |
| Folsom State PrisonCA3410032 | 7,502 | Surface water | Current health-based flag |
| Hughson, City OfCA5010008 | 7,481 | Ground water | Current health-based flag |
| City Of Dos PalosCA2410002 | 7,452 | Surface water | Current monitoring/reporting flag |
| City Of FowlerCA1010006 | 7,448 | Ground water | No current violation flagged |
| Escalon, City OfCA3910003 | 7,429 | Ground water | No current violation flagged |
| Gswc - CalipatriaCA1310003 | 7,363 | Surface water purchased | No current violation flagged |
| San Gabriel Valley Water Co-Montebello 2CA1910117 | 7,330 | Surface water purchased | No current violation flagged |
| Vandenberg Village Comm. Serv. Dist.CA4210017 | 7,308 | Ground water | No current violation flagged |
| Cotati, City OfCA4910016 | 7,303 | Ground water | No current violation flagged |
| City Of GridleyCA0410004 | 7,269 | Ground water | Current health-based flag |
| Cal-Water Service Co.-WillowsCA1110003 | 7,240 | Ground water | No current violation flagged |
| Awa, IoneCA0310002 | 7,227 | Surface water | No current violation flagged |
| City Of WintersCA5710005 | 7,115 | Ground water | No current violation flagged |
| Los Osos Community Services DistrictCA4010016 | 7,086 | Ground water | No current violation flagged |
| Lake Arrowhead CsdCA3610005 | 7,038 | Surface water | No current violation flagged |
| Santa Ynez River Water Cons. Dist. Id#1CA4210020 | 7,022 | Surface water purchased | No current violation flagged |
| Rincon Northern090600147 | 7,003 | Ground water | No current violation flagged |
| Peter Pitchess Honor Rancho Detn. CtrCA1900046 | 7,000 | Ground water | No current violation flagged |
| Golden State Wc - Cowan HeightsCA3010047 | 6,997 | Surface water purchased | No current violation flagged |
| Heber Public Utility DistrictCA1310007 | 6,979 | Surface water purchased | No current violation flagged |
| Fort Bragg, City OfCA2310001 | 6,919 | Surface water | Current health-based flag |
| Nevada Id - Lake Of PinesCA2910014 | 6,870 | Surface water | No current violation flagged |
| Nevada Id - North AuburnCA3110026 | 6,870 | Surface water | No current violation flagged |
| Ojai Water SystemCA5610014 | 6,801 | Surface water purchased | No current violation flagged |
| Beale Air Force BaseCA5810700 | 6,785 | Ground water | No current violation flagged |
| Foresthill Public Utility DistCA3110003 | 6,782 | Surface water | No current violation flagged |
| Nuevo Water CompanyCA3310026 | 6,733 | Surface water purchased | No current violation flagged |
| Joshua Basin Water DistrictCA3610025 | 6,640 | Ground water | No current violation flagged |
| China Lake Naval Air Weapons StationCA1510703 | 6,600 | Ground water | No current violation flagged |
| Psmcsd - PajaroCA2710020 | 6,500 | Ground water | No current violation flagged |
| Madera Valley Water CompanyCA2010010 | 6,494 | Ground water | No current violation flagged |
| City Of ColusaCA0610002 | 6,447 | Ground water | No current violation flagged |
| Los Angeles Cwwd 36-Val VerdeCA1910185 | 6,376 | Surface water purchased | No current violation flagged |
| Holtville, City OfCA1310005 | 6,355 | Surface water purchased | No current violation flagged |
| Maywood Mutual Water Co. #2CA1910085 | 6,349 | Surface water purchased | No current violation flagged |
| Helendale Community Service DistrictCA3610112 | 6,347 | Ground water | No current violation flagged |
| North Tahoe Pud - MainCA3110001 | 6,321 | Surface water | No current violation flagged |
| Calaveras PudCA0510002 | 6,286 | Surface water | No current violation flagged |
| Purissima Hills Water DistrictCA4310021 | 6,245 | Surface water purchased | No current violation flagged |
| Hidden Valley Lake CsdCA1710015 | 6,235 | Ground water | No current violation flagged |
| Golden State Water Co - Apple Vly SouthCA3610107 | 6,208 | Ground water | No current violation flagged |
| Cutler PudCA5410001 | 6,200 | Ground water | Current health-based flag |
| Willits, City OfCA2310004 | 6,175 | Surface water | No current violation flagged |
| City Of Industry Waterworks SystemsCA1910029 | 6,158 | Ground water | No current violation flagged |
| Solvang Water DivisionCA4210013 | 6,126 | Surface water purchased | No current violation flagged |
| City Of GustineCA2410003 | 6,110 | Ground water | Current health-based flag |
| Ventura River Water DistrictCA5610022 | 6,100 | Surface water purchased | No current violation flagged |
| Montara Water And Sanitary DistrictCA4110010 | 6,078 | Surface water | No current violation flagged |
| Maywood Mutual Water Co. #3CA1910086 | 6,059 | Surface water purchased | No current violation flagged |
| Lake Almanor Country Club MwcCA3210006 | 6,000 | Ground water | Current health-based flag |
| Sweetwater Springs Cwd - GuernevilleCA4910004 | 6,000 | Ground water | No current violation flagged |
| Bellflower Municipal Water SystemCA1910018 | 5,999 | Surface water purchased | No current violation flagged |
| Malaga County Water DistrictCA1010042 | 5,979 | Ground water | Current monitoring/reporting flag |
| Konocti County Water DistrictCA1710006 | 5,928 | Surface water | No current violation flagged |
| Golden State Water Company - Los OsosCA4010017 | 5,924 | Ground water | No current violation flagged |
| Glen Helen Water SystemCA3600108 | 5,900 | Ground water | No current violation flagged |
| Santa Ana River Water CompanyCA3310033 | 5,848 | Ground water | No current violation flagged |
| San Joaquin County - Lincoln VillageCA3910010 | 5,841 | Surface water purchased | No current violation flagged |
| Rancho Murieta Community ServiCA3410005 | 5,728 | Surface water | No current violation flagged |
| Naval Base Ventura County, Point MuguCA5610700 | 5,700 | Surface water purchased | No current violation flagged |
| Pauma090605012 | 5,700 | Ground water | Current monitoring/reporting flag |
| Keyes Community Services Dist.CA5010009 | 5,672 | Ground water | No current violation flagged |
| Tahoe City Pud - MainCA3110010 | 5,661 | Ground water | No current violation flagged |
| Serrano Water DistrictCA3010082 | 5,659 | Surface water purchased | No current violation flagged |
| Golden State Water Co - Arden Water ServCA3410003 | 5,658 | Ground water | No current violation flagged |
| Cal Am - MeadowbrookCA2410008 | 5,656 | Ground water | No current violation flagged |
| Calistoga, City OfCA2810002 | 5,610 | Surface water | Current monitoring/reporting flag |
| Bear Valley CsdCA1510038 | 5,592 | Ground water | Current health-based flag |
| Cdcr California Health Care FacilityCA3910803 | 5,551 | Surface water purchased | No current violation flagged |
| City Of WilliamsCA0610004 | 5,538 | Ground water | No current violation flagged |
| Cambria Comm Services DistCA4010014 | 5,532 | Ground water | No current violation flagged |
| Palm Ranch Irrigation Dist.CA1910103 | 5,507 | Surface water purchased | No current violation flagged |
| Riverstone/Rootcreek Water DistrictCA2010016 | 5,507 | Ground water | Current health-based flag |
| Hilmar County Water DistrictCA2410012 | 5,504 | Ground water | No current violation flagged |
| Maywood Mutual Water Co. #1CA1910084 | 5,500 | Surface water purchased | No current violation flagged |
| Millview County Water DistrictCA2310006 | 5,500 | Surface water | No current violation flagged |
| Tud - Columbia Water SystemCA5510013 | 5,463 | Surface water | No current violation flagged |
| St. Helena, City OfCA2810004 | 5,386 | Surface water | Current monitoring/reporting flag |
| La Habra Heights CwdCA1910218 | 5,325 | Surface water purchased | No current violation flagged |
| Yosemite Spring Park Util CoCA2010005 | 5,300 | Ground water | Current health-based flag |
| Cwsc Salinas HillsCA2710012 | 5,293 | Ground water | No current violation flagged |
| Running Springs Water DistrictCA3610062 | 5,268 | Surface water purchased | No current violation flagged |
| Suburban Water Systems-GlendoraCA1910046 | 5,249 | Surface water purchased | No current violation flagged |
| Redwood Valley County Water DistrictCA2310008 | 5,200 | Surface water | No current violation flagged |
| Ccwd - Copper CoveCA0510017 | 5,187 | Surface water | No current violation flagged |
| City Of Buellton Water DivisionCA4210018 | 5,161 | Surface water purchased | No current violation flagged |
| Wasco St. Prison Reception CtrCA1510801 | 5,124 | Ground water | No current violation flagged |
| California State Prison - SolanoCA4810800 | 5,100 | Surface water | No current violation flagged |
| Denair Community Services DistrictCA5010021 | 5,090 | Ground water | No current violation flagged |
| City Of JacksonCA0310001 | 5,019 | Surface water purchased | No current violation flagged |
| Kern Valley State PrisonCA1510802 | 5,000 | Ground water | No current violation flagged |
| Pleasant Valley Mutual Water CoCA5610008 | 5,000 | Surface water purchased | No current violation flagged |
| City Of Grass ValleyCA2910001 | 4,947 | Surface water | No current violation flagged |
| Awa, TannerCA0310003 | 4,940 | Surface water | No current violation flagged |
| Stallion Springs CsdCA1510025 | 4,910 | Ground water | Other current violation flag |
| La Cumbre Mutual Water CoCA4210024 | 4,861 | Surface water purchased | No current violation flagged |
| Sswd - Del Paso Manor Service AreaCA3410007 | 4,854 | Ground water | No current violation flagged |
| Las Flores Water Co.CA1910061 | 4,847 | Surface water purchased | No current violation flagged |
| Blue Lake Springs Mut WtrCA0510009 | 4,841 | Surface water purchased | No current violation flagged |
| Los Angeles Cwwd 37-ActonCA1910248 | 4,805 | Surface water purchased | No current violation flagged |
| Calipatria State PrisonCA1310800 | 4,800 | Surface water purchased | No current violation flagged |
| Union Public Utility DistrictCA0510001 | 4,774 | Surface water | No current violation flagged |
| Lakeport, City OfCA1710004 | 4,762 | Surface water | No current violation flagged |
| Mojave PudCA1510014 | 4,699 | Surface water purchased | No current violation flagged |
| Golden State Water Co.-Clearlake SystemCA1710002 | 4,644 | Surface water | No current violation flagged |
| Valley View Mutual Water Co.CA1910165 | 4,613 | Ground water | No current violation flagged |
| Coachella Vwd: I.D. No. 8CA3310048 | 4,600 | Ground water | No current violation flagged |
| Ivanhoe Public Utility DistCA5410019 | 4,580 | Ground water | Current health-based flag |
| Channel Islands Beach CsdCA5610039 | 4,560 | Surface water purchased | No current violation flagged |
| Cal Am - Bass LakeCA2010003 | 4,527 | Surface water | No current violation flagged |
| Golden State Water Company - NipomoCA4010018 | 4,506 | Surface water purchased | No current violation flagged |
| Northstar Csd - Martis ValleyCA3110051 | 4,493 | Ground water | No current violation flagged |
| Palomar ObservatoryCA3702236 | 4,416 | Ground water | No current violation flagged |
| Suburban Water Systems - SativaCA1910147 | 4,363 | Surface water purchased | No current violation flagged |
| Mt. Konocti Mutual Water CompanyCA1710014 | 4,360 | Surface water | No current violation flagged |
| Slvwd - Felton Water SystemCA4410002 | 4,340 | Surface water | Current health-based flag |
| California Rehabilitation Center - NorcoCA3310800 | 4,300 | Surface water purchased | No current violation flagged |
| Correctional Training Facility - SoledadCA2710850 | 4,269 | Ground water | No current violation flagged |
| Commerce-City, Water Dept.CA1910050 | 4,205 | Surface water purchased | No current violation flagged |
| Meiners Oaks CwdCA5610005 | 4,200 | Surface water purchased | No current violation flagged |
| Cal Am - ArdenCA3410045 | 4,191 | Surface water purchased | No current violation flagged |
| Meadow Vista CwdCA3110009 | 4,183 | Surface water | No current violation flagged |
| Golden State Water Co - WrightwoodCA3610047 | 4,177 | Ground water | No current violation flagged |
| Planada CsdCA2410007 | 4,164 | Ground water | Current health-based flag |
| Centerville C.S.D.CA4510011 | 4,151 | Surface water purchased | No current violation flagged |
| Russian River County Water DistrictCA4910008 | 4,150 | Ground water | No current violation flagged |
| Armona Community Services DistCA1610001 | 4,143 | Ground water | Current monitoring/reporting flag |
| City Of WheatlandCA5810004 | 4,124 | Ground water | No current violation flagged |
| Kelseyville Co Waterworks District 3CA1710007 | 4,102 | Ground water | No current violation flagged |
| Atascadero State HospitalCA4010832 | 4,100 | Ground water | No current violation flagged |
| Centinela State PrisonCA1310801 | 4,100 | Surface water purchased | No current violation flagged |
| Chuckawalla Valley State PrisonCA3310802 | 4,090 | Ground water | No current violation flagged |
| San Joaquin, City OfCA1010034 | 4,060 | Ground water | No current violation flagged |
| Lake County Csa 21 - North LakeportCA1710021 | 4,046 | Surface water | No current violation flagged |
| Farm Mutual W.C. (The)CA3310046 | 4,026 | Surface water purchased | No current violation flagged |
| Sheep Creek Water CompanyCA3610109 | 4,002 | Ground water | No current violation flagged |
| Weaverville C.S.D.CA5310001 | 3,975 | Surface water | No current violation flagged |
| Joint Regional Water Supply SystemCA3010071 | 3,947 | Surface water purchased | No current violation flagged |
| Del Mar, City OfCA3710004 | 3,919 | Surface water purchased | No current violation flagged |
| Bighorn - Desert View Water AgencyCA3610009 | 3,916 | Ground water | No current violation flagged |
| Tesoro Viejo Master Mwc, Inc.CA2010017 | 3,885 | Surface water | No current violation flagged |
| Treasure IslandCA3810702 | 3,864 | Surface water purchased | No current violation flagged |
| Woodlands DevelopmentCA4010081 | 3,862 | Surface water purchased | No current violation flagged |
| Cdcr-High Desert State PrisonCA1805004 | 3,857 | Ground water | No current violation flagged |
| Angels, City OfCA0510003 | 3,836 | Surface water | Current health-based flag |
| Gilbert Street ComplexCA3600215 | 3,833 | Ground water | Current monitoring/reporting flag |
| So. Cal. Edison Co.-Santa CatalinaCA1910006 | 3,822 | Surface water | No current violation flagged |
| Bishop, City OfCA1410001 | 3,819 | Ground water | No current violation flagged |
| San Joaquin County-Mokelumne AcresCA3910017 | 3,802 | Ground water | No current violation flagged |
| Willow County Water DistrictCA2310005 | 3,797 | Surface water purchased | No current violation flagged |
| Forestville Water DistrictCA4910019 | 3,788 | Ground water purchased | No current violation flagged |
| American Valley CsdCA3210004 | 3,778 | Ground water | Current monitoring/reporting flag |
| Idyllwild Water DistrictCA3310019 | 3,762 | Ground water | No current violation flagged |
| Cal Am - OakhurstCA2010007 | 3,693 | Ground water | No current violation flagged |
| Mt. Shasta, City OfCA4710008 | 3,642 | Ground water | Current health-based flag |
| Brooktrails Township CsdCA2310009 | 3,632 | Surface water | No current violation flagged |
| Mission Hills CsdCA4210019 | 3,600 | Ground water | No current violation flagged |
| Esparto C.S.D.CA5710007 | 3,574 | Ground water | No current violation flagged |
| Lockeford Community Serv. Dist.CA3910008 | 3,572 | Ground water | No current violation flagged |
| Cdcr - Sierra Conservation CenterCA5510851 | 3,571 | Surface water | No current violation flagged |
| Jackson Valley Irrigation DistrictCA0300037 | 3,553 | Surface water | No current violation flagged |
| Big River Development090600226 | 3,550 | Ground water | Current serious-violator flag |
| Cobb Area County Water DistrictCA1710012 | 3,515 | Ground water | Current health-based flag |
| Hoopa Valley-Wide System090605126 | 3,500 | Surface water | No current violation flagged |
| Presidio Of San FranciscoCA3810700 | 3,500 | Surface water | No current violation flagged |
| Colusa Southern System090605047 | 3,474 | Ground water | No current violation flagged |
| East Orange County Wd - RzCA3010068 | 3,464 | Surface water purchased | No current violation flagged |
| San Antonio Water CompanyCA3610085 | 3,441 | Ground water | No current violation flagged |
| Borrego WdCA3710036 | 3,429 | Ground water | No current violation flagged |
| City Of BrisbaneCA4110002 | 3,402 | Surface water purchased | No current violation flagged |
| Groveland Community Serv DistCA5510009 | 3,400 | Surface water | Current health-based flag |
| Box Springs Mutual WcCA3310004 | 3,382 | Surface water purchased | No current violation flagged |
| Tahoe City Pud - Tahoe Swiss VillageCA3110042 | 3,363 | Ground water | No current violation flagged |
| Rio Alto Water DistrictCA5210005 | 3,329 | Ground water | No current violation flagged |
| Folsom, City Of - AshlandCA3410030 | 3,317 | Surface water purchased | No current violation flagged |
| Cottonwood Water DistrictCA4510007 | 3,316 | Ground water | Current monitoring/reporting flag |
| Rio Dell, City OfCA1210012 | 3,300 | Surface water | No current violation flagged |
| Lukins Brothers Water CompanyCA0910007 | 3,277 | Ground water | No current violation flagged |
| Rincon Del Diablo Mwd (Id-A)CA3710044 | 3,275 | Surface water purchased | No current violation flagged |
| Lake Don Pedro CsdCA5510008 | 3,240 | Surface water | Current health-based flag |
| Valley State PrisonCA2010801 | 3,173 | Ground water | No current violation flagged |
| Madera Co Md10A-Madera RanchosCA2010008 | 3,172 | Ground water | No current violation flagged |
| Cwsc Oak HillsCA2710019 | 3,161 | Ground water | No current violation flagged |
| Burney Water DistrictCA4510003 | 3,154 | Ground water | Current monitoring/reporting flag |
| Placer Cwa - ColfaxCA3110006 | 3,149 | Surface water | No current violation flagged |
| City Of Nevada CityCA2910002 | 3,148 | Surface water | No current violation flagged |
| Amarillo Mutual Water CompanyCA1910002 | 3,134 | Ground water | No current violation flagged |
| Home Gardens County WdCA3310018 | 3,095 | Surface water purchased | No current violation flagged |
| Shasta C.S.D.CA4510013 | 3,069 | Surface water | No current violation flagged |
| Marygold MwcCA3610028 | 3,055 | Ground water | No current violation flagged |
| Madera Co Csa 22C Gunner RanchCA2010019 | 3,050 | Ground water | No current violation flagged |
| Littlerock Creek Irrigation Dist.CA1910064 | 3,040 | Ground water | No current violation flagged |
| High Desert Detention CenterCA3601182 | 3,035 | Ground water | No current violation flagged |
| Avi Casino090400302 | 3,001 | Ground water | Current serious-violator flag |
| Soboba090600151 | 3,000 | Ground water | No current violation flagged |
| Sweetwater Springs Cwd - Monte RioCA4910028 | 3,000 | Ground water | No current violation flagged |
| Cci - TehachapiCA1510800 | 2,993 | Ground water | No current violation flagged |
| Green Valley MwcCA3610023 | 2,993 | Surface water purchased | No current violation flagged |
| Aromas Water DistrictCA3510004 | 2,988 | Ground water | No current violation flagged |
| Naval Medical Center San DiegoCA3710710 | 2,981 | Surface water purchased | No current violation flagged |
| Heritage Ranch CsdCA4010012 | 2,956 | Surface water | No current violation flagged |
| Nps-Grant GroveCA1010501 | 2,950 | Ground water | Current monitoring/reporting flag |
| Nps-WolvertonCA5410503 | 2,940 | Surface water | Current monitoring/reporting flag |
| Nps-Ash MountainCA5410513 | 2,930 | Groundwater under influence of surface water | Current monitoring/reporting flag |
| Salinas Valley State PrisonCA2710851 | 2,930 | Ground water | No current violation flagged |
| Nice Mutual Water CompanyCA1710008 | 2,929 | Surface water | No current violation flagged |
| Cuyamaca Water DistrictCA3700074 | 2,923 | Ground water | No current violation flagged |
| Sutter Community S.D.CA5110007 | 2,904 | Ground water | No current violation flagged |
| Palo Alto Park Mutual Water CompanyCA4110020 | 2,900 | Ground water | No current violation flagged |
| June Lake Pud - Down CanyonCA2610004 | 2,810 | Surface water | Current health-based flag |
| City Of Vallejo-Lakes SystemCA4810021 | 2,800 | Surface water | No current violation flagged |
| Land Projects Mutual Water Co.CA1910246 | 2,800 | Ground water | No current violation flagged |
| Lerdo Sheriff S FacilityCA1502320 | 2,800 | Ground water | No current violation flagged |
| Rio Cosumnes Correctional Center [Sws]CA3400229 | 2,800 | Ground water | Current health-based flag |
| Seaside Municipal Water SystemCA2710018 | 2,800 | Ground water | No current violation flagged |
| Lake Shastina C.S.DCA4710013 | 2,790 | Ground water | Current health-based flag |
| O'Connor Tract Co-Operative Water Co.CA4110019 | 2,789 | Ground water | No current violation flagged |
| Town Of YountvilleCA2810007 | 2,787 | Surface water purchased | No current violation flagged |
| Arbuckle Public Utility DistrictCA0610001 | 2,778 | Ground water | Current monitoring/reporting flag |
| North Yuba Water DistrictCA5810006 | 2,772 | Surface water | No current violation flagged |
| Pixley Public Util DistCA5410009 | 2,772 | Ground water | No current violation flagged |
| June Lake Pud VillageCA2610002 | 2,763 | Surface water | Current health-based flag |
| Riverdale Public Utility DistrictCA1010028 | 2,756 | Ground water | No current violation flagged |
| Fort Hunter LiggettCA2710702 | 2,753 | Ground water | No current violation flagged |
| Bishop Paiute-Shoshone Tribe090600122 | 2,735 | Ground water | Other current violation flag |
| Central Water DistrictCA4410018 | 2,726 | Ground water | No current violation flagged |
| Fcwwd 41/Shaver LakeCA1010017 | 2,722 | Ground water | No current violation flagged |
| City Of AlturasCA2510001 | 2,715 | Ground water | Current health-based flag |
| Strathmore Public Util DistCA5410012 | 2,669 | Surface water | No current violation flagged |
| Weed, City OfCA4710009 | 2,662 | Ground water | Current monitoring/reporting flag |
| Terra Bella Irrigation District - TbtCA5410038 | 2,656 | Surface water | No current violation flagged |
| Arrowhead Villas Mutual Service CompanyCA3610093 | 2,654 | Surface water purchased | No current violation flagged |
| Lakeside Park AssociationCA0910019 | 2,648 | Surface water | Current monitoring/reporting flag |
| Pine Valley Mutual WcCA3710039 | 2,645 | Ground water | No current violation flagged |
| Caruthers Comm Serv DistCA1010039 | 2,613 | Ground water | No current violation flagged |
| Bertsch Ocean View CsdCA0810003 | 2,605 | Ground water purchased | No current violation flagged |
| San Miguel Community Services DistrictCA4010010 | 2,600 | Ground water | No current violation flagged |
| Fulton Water CompanyCA3110015 | 2,593 | Surface water | Current monitoring/reporting flag |
| North Gualala Water CompanyCA2310007 | 2,593 | Surface water | No current violation flagged |
| Frazier Park PudCA1510007 | 2,592 | Ground water | No current violation flagged |
| Cws - KernvilleCA1510033 | 2,572 | Surface water | No current violation flagged |
| Smith River C.S.D.CA0810002 | 2,568 | Ground water | No current violation flagged |
| Cayucos Beach Mutual Water CompanyCA4010006 | 2,567 | Surface water purchased | No current violation flagged |
| Tule River Reservation Main090600156 | 2,560 | Surface water | Current serious-violator flag |
| Rogina Water Company Inc.CA2310002 | 2,554 | Ground water | Current health-based flag |
| Tipton Community Services DistCA5410014 | 2,543 | Ground water | No current violation flagged |
| Alpine Water Users AssociationCA3610002 | 2,534 | Surface water purchased | No current violation flagged |
| Agate Bay Water CompanyCA3110012 | 2,500 | Surface water | Current health-based flag |
| Erskine Creek WcCA1510009 | 2,500 | Ground water | No current violation flagged |
02 / CITY REPORTS
California city water-system reports
California has 191 city reports meeting the publication threshold for covered systems or reported population served.
Madera3 systemsModesto3 systemsSan Jose3 systemsFolsom2 systemsJackson2 systemsMontebello2 systemsSanta Fe Springs2 systemsStockton2 systemsVallejo2 systemsAdelanto1 systemsAlhambra1 systemsAmerican Canyon1 systemsAnaheim1 systemsAnderson1 systemsAntioch1 systemsArcadia1 systemsArcata1 systemsAtwater1 systemsAvenal1 systemsBakersfield1 systemsBanning1 systemsBell Gardens1 systemsBenicia1 systemsBeverly Hills1 systemsBig Bear City1 systemsBrawley1 systemsBrea1 systemsBrentwood1 systemsBuena Park1 systemsBurbank1 systemsBurlingame1 systemsCalexico1 systemsCalifornia City1 systemsCeres1 systemsCerritos1 systemsChino1 systemsChino Hills1 systemsChowchilla1 systemsCloverdale1 systemsClovis1 systemsCoachella1 systemsCoalinga1 systemsColton1 systemsCompton1 systemsCorcoran1 systemsCorona1 systemsCovina1 systemsCrescent City1 systemsCupertino1 systemsDaly City1 systemsDavis1 systemsDelano1 systemsDinuba1 systemsDowney1 systemsEast Palo Alto1 systemsEl Centro1 systemsEl Monte1 systemsEl Segundo1 systemsEscondido1 systemsEureka1 systemsExeter1 systemsFairfield1 systemsFarmersville1 systemsFortuna1 systemsFountain Valley1 systemsFresno1 systemsFullerton1 systemsGalt1 systemsGarden Grove1 systemsGilroy1 systemsGlendale1 systemsGlendora1 systemsGreenfield1 systemsHanford1 systemsHawthorne1 systemsHayward1 systemsHealdsburg1 systemsHemet1 systemsHollister1 systemsHuntington Beach1 systemsHuntington Park1 systemsImperial1 systemsInglewood1 systemsKerman1 systemsKingsburg1 systemsLa Habra1 systemsLa Palma1 systemsLa Verne1 systemsLakewood1 systemsLathrop1 systemsLemoore1 systemsLincoln1 systemsLindsay1 systemsLivermore1 systemsLivingston1 systemsLodi1 systemsLoma Linda1 systemsLomita1 systemsLompoc1 systemsLong Beach1 systemsLos Angeles1 systemsLos Banos1 systemsLynwood1 systemsManhattan Beach1 systemsManteca1 systemsMartinez1 systemsMcfarland1 systemsMendota1 systemsMenlo Park1 systemsMerced1 systemsMillbrae1 systemsMilpitas1 systemsMonrovia1 systemsMonterey Park1 systemsMorgan Hill1 systemsMountain View1 systemsNapa1 systemsNewman1 systemsNewport Beach1 systemsNorco1 systemsNorwalk1 systemsOakdale1 systemsOceanside1 systemsOntario1 systemsOrange1 systemsPalo Alto1 systemsParamount1 systemsParlier1 systemsPasadena1 systemsPatterson1 systemsPetaluma1 systemsPico Rivera1 systemsPittsburg1 systemsPleasanton1 systemsPomona1 systemsPorterville1 systemsPoway1 systemsRed Bluff1 systemsRedding1 systemsRedlands1 systemsRedwood City1 systemsReedley1 systemsRialto1 systemsRio Vista1 systemsRipon1 systemsRiverbank1 systemsRiverside1 systemsRohnert Park1 systemsRoseville1 systemsSacramento1 systemsSan Bernardin01 systemsSan Bruno1 systemsSan Clemente1 systemsSan Diego1 systemsSan Fernando1 systemsSan Jacinto1 systemsSan Juan Capistrano1 systemsSanger1 systemsSanta Ana1 systemsSanta Barbara1 systemsSanta Clara1 systemsSanta Monica1 systemsSanta Rosa1 systemsSeal Beach1 systemsShafter1 systemsShasta Lake 45100071 systemsShingle Springs1 systemsSierra Madre1 systemsSignal Hill1 systemsSoledad1 systemsSonoma1 systemsSouth Gate1 systemsSouth Pasadena1 systemsSunnyvale1 systemsTable Mountain1 systemsTorrance1 systemsTracy1 systemsTulare1 systemsTurlock1 systemsTustin1 systemsUkiah1 systemsUpland1 systemsVacaville1 systemsVernon1 systemsWasco1 systemsWatsonville1 systemsWest Sacramento1 systemsWestminster1 systemsWhittier1 systemsWoodland1 systemsYuba City1 systems
03 / COUNTY REPORTS
California county water-system reports
California has 52 county reports meeting the publication threshold for covered systems or reported population served.
Los Angeles118 systemsSan Bernardino53 systemsSan Diego34 systemsRiverside33 systemsKern32 systemsOrange32 systemsSacramento29 systemsFresno23 systemsVentura22 systemsSan Mateo21 systemsSan Luis Obispo20 systemsTulare18 systemsMonterey16 systemsPlacer16 systemsSanta Clara16 systemsSonoma16 systemsSanta Barbara15 systemsSan Joaquin13 systemsStanislaus12 systemsMadera11 systemsMerced11 systemsSolano11 systemsLake10 systemsImperial9 systemsMendocino9 systemsShasta9 systemsContra Costa8 systemsAlameda7 systemsButte7 systemsCalaveras7 systemsNevada7 systemsSanta Cruz7 systemsYuba7 systemsEl Dorado6 systemsHumboldt6 systemsKings6 systemsTuolumne6 systemsYolo6 systemsAmador5 systemsNapa5 systemsSiskiyou4 systemsColusa3 systemsDel Norte3 systemsMarin3 systemsMono3 systemsSan Benito3 systemsSan Francisco3 systemsSutter3 systemsTehama3 systemsGlenn2 systemsLassen2 systemsPlumas2 systems