STATE / TERRITORY LEDGER
Pennsylvania drinking water system records
EPA’s September 2026 export lists 424 active community water systems in Pennsylvania, with 59 current-violation flags and 5 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
Systems424active CWS · pop. 2,500+
Population served10,825,492reported total; may overlap
Current violation flag13.9%59 systems
Serious-violator flag1.2%5 systems
01 / LARGEST SYSTEMS
Pennsylvania community water systems
EPA’s covered Pennsylvania records include 424 active community systems reporting a combined population-served total of 10,825,492, 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 |
|---|---|---|---|
| Philadelphia Water DepartmentPA1510001 | 1,600,000 | Surface water | No current violation flagged |
| Aqua Pa Main SystemPA1460073 | 822,600 | Surface water | No current violation flagged |
| Pa Amer Water Co-PittsburghPA5020039 | 686,000 | Surface water | No current violation flagged |
| Pittsburgh Water & Sewer AuthPA5020038 | 520,000 | Surface water | No current violation flagged |
| Erie City Water AuthorityPA6250028 | 220,001 | Surface water | No current violation flagged |
| York Water CoPA7670100 | 206,762 | Surface water | Current monitoring/reporting flag |
| West View Water AuthorityPA5020043 | 200,000 | Surface water | No current violation flagged |
| Mawc Sweeney PlantPA5650032 | 143,000 | Surface water | No current violation flagged |
| Chester Water AuthorityPA1230004 | 140,437 | Surface water | No current violation flagged |
| Pa Amer Water Co Lake ScrantonPA2359008 | 137,142 | Surface water | No current violation flagged |
| Mawc Yough PlantPA5260036 | 133,000 | Surface water | No current violation flagged |
| Wilkinsburg-Penn Jt Water AuthPA5020056 | 125,000 | Surface water | No current violation flagged |
| City Of LancasterPA7360058 | 120,000 | Surface water | No current violation flagged |
| Lca Allentown DivisionPA3390024 | 118,000 | Surface water | No current violation flagged |
| City Of BethlehemPA3480046 | 117,259 | Surface water | No current violation flagged |
| Veolia WaterPA7220015 | 110,000 | Surface water | No current violation flagged |
| Pa American Water Co WestPA7210029 | 105,127 | Surface water | No current violation flagged |
| Easton Area Water SystemPA3480050 | 96,867 | Surface water | No current violation flagged |
| Reading Area Water AuthorityPA3060059 | 95,100 | Surface water | No current violation flagged |
| North Penn Water AuthorityPA1460034 | 91,941 | Surface water purchased | No current violation flagged |
| Pa American NorristownPA1460046 | 88,885 | Surface water | No current violation flagged |
| North Wales Water AuthorityPA1460048 | 72,496 | Surface water | No current violation flagged |
| State College Boro Water AuthPA4140096 | 72,000 | Surface water | No current violation flagged |
| Capital Region WaterPA7220049 | 66,540 | Surface water | No current violation flagged |
| Lower Bucks Co Joint Mun AuthPA1090026 | 63,007 | Surface water | No current violation flagged |
| Altoona Water AuthorityPA4070023 | 62,500 | Surface water | Current serious-violator flag |
| Hampton Shaler Water AuthorityPA5020019 | 61,949 | Surface water purchased | No current violation flagged |
| Aqua Pa BensalemPA1090078 | 59,001 | Surface water purchased | No current violation flagged |
| Paw CeasetownPA2409002 | 58,467 | Surface water | No current violation flagged |
| Lebanon Water AuthPA7380010 | 57,000 | Surface water | No current violation flagged |
| Paw NesbittPA2409010 | 52,640 | Surface water | No current violation flagged |
| Bcwsa Main Lower SouthPA1090079 | 52,621 | Surface water purchased | No current violation flagged |
| Paw WatresPA2409011 | 52,002 | Surface water | No current violation flagged |
| Williamsport Mun Water AuthPA4410173 | 51,000 | Surface water | No current violation flagged |
| Pa Amer Water CoPA7220017 | 50,200 | Surface water | No current violation flagged |
| Pa American RoyersfordPA1150166 | 49,508 | Surface water | No current violation flagged |
| Beaver Falls Muni AuthPA5040012 | 49,500 | Surface water | No current violation flagged |
| Greater Johnstown Wa RiversidePA4110034 | 49,500 | Surface water | No current violation flagged |
| Aqua Pa West ChesterPA1150098 | 48,600 | Surface water | No current violation flagged |
| Monroeville Municipal AuthPA5020027 | 48,500 | Surface water purchased | No current violation flagged |
| Aqua Pa Shenango Valley WtpPA6430054 | 48,000 | Surface water | No current violation flagged |
| New Kensington Muni AuthPA5650070 | 47,800 | Surface water | No current violation flagged |
| Lca Wlsa Central DivisionPA3390073 | 47,693 | Surface water purchased | No current violation flagged |
| Veolia MechanicsburgPA7210028 | 45,013 | Surface water | No current violation flagged |
| Hca Hazleton DivisionPA2408001 | 45,000 | Surface water | Other current violation flag |
| Pa American Water Co ButlerPA5100012 | 43,286 | Surface water | No current violation flagged |
| Pa Amer Water Co New CastlePA6370034 | 43,279 | Surface water | No current violation flagged |
| Aqua Pa Roaring Creek DivisionPA4490024 | 43,000 | Surface water | No current violation flagged |
| Cranberry Twp WtpPA5100094 | 42,000 | Surface water purchased | No current violation flagged |
| Hanover Muni Water WorksPA7670076 | 40,900 | Surface water | No current violation flagged |
| Southwestern Pa Water AuthPA5300017 | 40,200 | Surface water | No current violation flagged |
| Northampton Boro Muni AuthPA3480057 | 40,000 | Surface water | No current violation flagged |
| Oakmont Water AuthorityPA5020036 | 39,901 | Surface water | No current violation flagged |
| Newtown Artesian Water CoPA1090043 | 38,500 | Surface water purchased | No current violation flagged |
| Moon Twp Muni AuthPA5020011 | 38,000 | Surface water | No current violation flagged |
| Penn State UnivPA4140095 | 37,000 | Ground water | No current violation flagged |
| Pa American CoatesvillePA1150106 | 36,960 | Surface water | No current violation flagged |
| Northampton Bucks Co Mun AuthPA1090089 | 36,750 | Surface water purchased | No current violation flagged |
| Pottstown Borough Water AuthPA1460037 | 36,000 | Surface water | No current violation flagged |
| Warminster Municipal AuthorityPA1090069 | 36,000 | Surface water purchased | No current violation flagged |
| Aqua Pa UwchlanPA1150035 | 35,518 | Surface water purchased | No current violation flagged |
| North Fayette Cnty Muni AuthPA5260019 | 35,409 | Surface water | No current violation flagged |
| Pa American Water Co YardleyPA1090074 | 33,171 | Surface water | No current violation flagged |
| West Cnty Muni Auth-MckeesportPA5020025 | 32,644 | Surface water | No current violation flagged |
| Schuylkill Co Mun AuthPA3540038 | 31,850 | Surface water | No current violation flagged |
| Chambersburg Boro Water SysPA7280005 | 31,048 | Surface water | No current violation flagged |
| Pa American White DeerPA4490023 | 30,209 | Surface water | No current violation flagged |
| Brodhead Creek Reg Water AuthPA2450034 | 30,000 | Surface water | No current violation flagged |
| Latrobe Muni AuthPA5650060 | 30,000 | Surface water | No current violation flagged |
| Mifflin Cnty Muni AuthPA4440010 | 29,432 | Surface water | No current violation flagged |
| Veolia Water Pa Inc BloomsburgPA4190008 | 29,382 | Surface water | No current violation flagged |
| Aqua Pa BristolPA1090001 | 28,727 | Surface water | No current violation flagged |
| Paw Penn DistrictPA3060069 | 28,508 | Ground water | No current violation flagged |
| Guilford Water AuthPA7280038 | 28,135 | Ground water | Other current violation flag |
| Plum Boro Muni AuthPA5020041 | 27,500 | Surface water purchased | No current violation flagged |
| Auth Of Boro Of CharleroiPA5630039 | 27,000 | Surface water | No current violation flagged |
| Carlisle Water Trmt PltPA7210002 | 26,000 | Surface water | No current violation flagged |
| Horsham Water&Sewer AuthorityPA1460033 | 26,000 | Surface water purchased | No current violation flagged |
| Columbia Water CoPA7360123 | 25,200 | Surface water | No current violation flagged |
| Paw Glen Alsace DivPA3060088 | 24,951 | Surface water purchased | No current violation flagged |
| Ephrata Area Joint AuthorityPA7360045 | 24,500 | Surface water | No current violation flagged |
| Falls Twp Water & Sewer DeptPA1090022 | 24,400 | Surface water purchased | No current violation flagged |
| Paw Blue Mountain DivisionPA3480055 | 23,763 | Surface water | No current violation flagged |
| Pa-American Water- UniontownPA5260020 | 23,125 | Surface water purchased | No current violation flagged |
| Highland S & W Auth BeaverdamPA4110017 | 22,617 | Surface water | No current violation flagged |
| Muhlenberg Twp Muni AuthPA3060038 | 22,400 | Ground water | No current violation flagged |
| Pa American Water Co-Indiana DPA5320025 | 22,360 | Surface water | No current violation flagged |
| Nwwa Warrington TownshipPA1090070 | 21,588 | Surface water purchased | No current violation flagged |
| Dover Twp Water SysPA7670073 | 21,097 | Surface water purchased | No current violation flagged |
| East Hempfield Water AuthPA7360063 | 20,988 | Surface water purchased | No current violation flagged |
| Paw PhilipsburgPA4140087 | 20,865 | Surface water | No current violation flagged |
| Ambler Boro Water DeptPA1460020 | 20,000 | Surface water | No current violation flagged |
| St Marys Area Water AuthPA6240016 | 19,588 | Surface water | No current violation flagged |
| Ambridge Water AuthPA5040008 | 19,500 | Surface water | No current violation flagged |
| Western Allegheny County Mun APA5020034 | 19,031 | Surface water purchased | No current violation flagged |
| Center Twp Water AuthPA5040007 | 19,000 | Surface water | No current violation flagged |
| Elizabethtown Area WaterPA7360124 | 19,000 | Surface water | No current violation flagged |
| Bradford City Water AuthorityPA6420014 | 18,500 | Surface water | Current health-based flag |
| Fox Chapel AuthPA5020040 | 18,500 | Surface water purchased | No current violation flagged |
| Pawc Pocono DistrictPA2450063 | 17,860 | Ground water | No current violation flagged |
| Shippensburg Boro Water AuthPA7210043 | 17,800 | Surface water | No current violation flagged |
| Meadville Area Water AuthorityPA6200036 | 17,339 | Ground water | No current violation flagged |
| Pa Amer Water Co Ellwood CtyPA6370011 | 17,200 | Surface water | No current violation flagged |
| Phoenixville Water DeptPA1150077 | 16,599 | Surface water | No current violation flagged |
| Robinson Twp Muni AuthPA5020045 | 16,354 | Surface water | No current violation flagged |
| Highridge Water AuthPA5650069 | 16,000 | Surface water | No current violation flagged |
| Upper Southampton Mun AuthPA1090063 | 16,000 | Surface water purchased | Current serious-violator flag |
| Red Lion Municipal AuthorityPA7670086 | 15,882 | Surface water | No current violation flagged |
| Slippery Rock Muni AuthPA5100079 | 15,778 | Ground water | No current violation flagged |
| Mun Water Auth Of AliquippaPA5040006 | 15,685 | Ground water | No current violation flagged |
| Aqua Pa Susquehanna DivisionPA2080028 | 15,569 | Ground water | Other current violation flag |
| Pa American Water BerwickPA4190013 | 15,282 | Ground water | No current violation flagged |
| Mt Joy Boro AuthPA7360091 | 15,261 | Groundwater under influence of surface water | No current violation flagged |
| Creswell Heights Jt AuthPA5040063 | 15,000 | Ground water | No current violation flagged |
| Perkasie Regional AuthorityPA1090046 | 15,000 | Ground water | No current violation flagged |
| Warwick Twp Water & Sewer AuthPA1090127 | 14,699 | Surface water purchased | No current violation flagged |
| Pa American Water Co WarrenPA6620020 | 14,650 | Ground water | No current violation flagged |
| Swt Main SystemPA3390065 | 14,500 | Surface water purchased | No current violation flagged |
| Kutztown Borough WaterPA3060041 | 14,200 | Groundwater under influence of surface water | No current violation flagged |
| Clearfield Municipal AuthPA6170008 | 14,000 | Surface water | No current violation flagged |
| Emmaus Borough Public WaterPA3390032 | 14,000 | Ground water | No current violation flagged |
| Huntingdon Boro Water DeptPA4310012 | 13,776 | Surface water | No current violation flagged |
| Harrison Twp Water AuthPA5020108 | 13,411 | Surface water | No current violation flagged |
| Morrisville Munic AuthorityPA1090037 | 13,342 | Surface water | Current health-based flag |
| Shillington Muni AuthPA3060067 | 13,300 | Surface water purchased | No current violation flagged |
| Boro Of WaynesboroPA7280032 | 13,200 | Surface water | No current violation flagged |
| Whitehall Twp AuthorityPA3390081 | 13,063 | Ground water | No current violation flagged |
| E Stroudsburg Boro Water DeptPA2450023 | 13,000 | Surface water | Current serious-violator flag |
| Aqua Pa HatboroPA1460028 | 12,901 | Surface water purchased | No current violation flagged |
| Quakertown BoroPA1090082 | 12,800 | Ground water | No current violation flagged |
| Bear Valley Joint AuthPA7280043 | 12,589 | Surface water | Current monitoring/reporting flag |
| Pa Amer Water Co BrownellPA2359001 | 12,560 | Surface water | No current violation flagged |
| Summit Township Water AuthoritPA6250090 | 12,500 | Surface water purchased | No current violation flagged |
| Gettysburg Muni AuthPA7010019 | 12,425 | Surface water | No current violation flagged |
| Dallastown Yoe Water AuthPA7670085 | 12,300 | Surface water purchased | Other current violation flag |
| Paw HuntsvillePA2409013 | 11,987 | Surface water | No current violation flagged |
| South Middleton Twp Water AuthPA7210050 | 11,695 | Surface water purchased | No current violation flagged |
| Findlay Twp Municipal AuthPA5020078 | 11,460 | Surface water purchased | Other current violation flag |
| Pa-American Water Co-ConnellsvPA5260022 | 11,425 | Surface water purchased | No current violation flagged |
| Aqua Pa Superior Main SystemPA1460085 | 11,400 | Surface water purchased | No current violation flagged |
| Municipal Authority SunburyPA4490007 | 11,043 | Surface water | Current monitoring/reporting flag |
| Mt Penn Boro Muni AuthPA3060082 | 10,400 | Ground water | No current violation flagged |
| Pa American Water Co ClarionPA6160001 | 10,372 | Surface water | No current violation flagged |
| Richland Twp Water AuthorityPA5020018 | 10,190 | Surface water purchased | No current violation flagged |
| Tri Cnty Jt Muni AuthPA5630045 | 10,100 | Surface water | Current health-based flag |
| City Of Lock Haven Water DeptPA4180048 | 10,000 | Surface water | Current monitoring/reporting flag |
| West Manchester Twp AuthPA7670101 | 9,960 | Ground water | No current violation flagged |
| Downingtown Water AuthorityPA1150026 | 9,900 | Surface water | No current violation flagged |
| Paw Crystal LakePA2409003 | 9,773 | Surface water | No current violation flagged |
| Suburban Lock Haven Water AuthPA4180049 | 9,700 | Surface water purchased | No current violation flagged |
| Icmsa Crooked CreekPA5320109 | 9,638 | Surface water | No current violation flagged |
| Oil CityPA6610023 | 9,608 | Ground water | No current violation flagged |
| Veolia MiddletownPA7220038 | 9,600 | Ground water | No current violation flagged |
| Aqua ShenandoahPA3540044 | 9,500 | Surface water | No current violation flagged |
| Bellefonte Borough Water AuthPA4140075 | 9,500 | Ground water | No current violation flagged |
| Myerstown Water AuthPA7380025 | 9,500 | Groundwater under influence of surface water | No current violation flagged |
| Windber Area AuthPA4560013 | 9,463 | Ground water | No current violation flagged |
| Lititz BoroPA7360126 | 9,397 | Groundwater under influence of surface water | No current violation flagged |
| Lansford Coaldale Jt Water AutPA3130004 | 9,300 | Ground water | No current violation flagged |
| Muni Auth Of Washington TwpPA5260009 | 9,100 | Surface water | No current violation flagged |
| General Authority Of FranklinPA6610020 | 9,096 | Ground water | No current violation flagged |
| Paw Bangor DistrictPA3480038 | 9,008 | Surface water | No current violation flagged |
| Lehighton Water AuthorityPA3130009 | 9,000 | Surface water | No current violation flagged |
| Dillsburg Area AuthorityPA7670071 | 8,962 | Ground water | No current violation flagged |
| Aqua Pa FriendshipPA1150137 | 8,800 | Ground water | No current violation flagged |
| Doylestown Boro Water DeptPA1090081 | 8,700 | Ground water | No current violation flagged |
| Municipal Water Auth Adams TwpPA5100141 | 8,700 | Surface water purchased | No current violation flagged |
| Dtma Main SystemPA1090128 | 8,655 | Surface water purchased | No current violation flagged |
| Aqua Pa GreenvillePA6430037 | 8,600 | Surface water | No current violation flagged |
| Warwick Twp Lititz SysPA7360116 | 8,561 | Purchased ground water under influence of surface water source | No current violation flagged |
| Hollidaysburg Muni AuthPA4070017 | 8,523 | Surface water purchased | No current violation flagged |
| Salisbury Twp Water SystemPA3390062 | 8,522 | Surface water purchased | No current violation flagged |
| Ebensburg Boro Muni AuthPA4110009 | 8,500 | Surface water | Other current violation flag |
| Wyomissing Boro Water SystemPA3060083 | 8,500 | Surface water purchased | No current violation flagged |
| New Holland BoroughPA7360099 | 8,490 | Ground water | No current violation flagged |
| Collegeville Trappe Joint PwdPA1460022 | 8,470 | Ground water | No current violation flagged |
| N Middleton Water AuthPA7210049 | 8,455 | Surface water | No current violation flagged |
| Pa American Water PunxsyPA6330010 | 8,419 | Surface water | No current violation flagged |
| Houtzdale Municipal AuthorityPA6170023 | 8,410 | Surface water | No current violation flagged |
| Hemlock Farms (Main)PA2520033 | 8,321 | Ground water | No current violation flagged |
| Wellsboro Municipal AuthorityPA2590042 | 8,225 | Surface water | No current violation flagged |
| Pa American AudubonPA1460055 | 8,200 | Surface water purchased | No current violation flagged |
| Aqua Pa Spring RunPA1150089 | 8,151 | Surface water purchased | No current violation flagged |
| Boyertown Muni AuthPA3060081 | 8,000 | Surface water | No current violation flagged |
| Kittanning Suburb Jt Water AutPA5030043 | 8,000 | Surface water | Other current violation flag |
| Tamaqua Area Water AuthorityPA3540012 | 8,000 | Surface water | No current violation flagged |
| Millersville UnivPA7360127 | 7,950 | Ground water | No current violation flagged |
| Brighton Twp Muni AuthPA5040017 | 7,920 | Ground water purchased | No current violation flagged |
| Wernersville Muni Water AuthPA3060076 | 7,920 | Surface water purchased | Other current violation flag |
| Grove City Boro Water DeptPA6430040 | 7,871 | Ground water | Current monitoring/reporting flag |
| Pa-American Water-BrownsvillePA5260005 | 7,844 | Surface water | No current violation flagged |
| Veolia Water BethelPA1230012 | 7,809 | Surface water purchased | No current violation flagged |
| Conemaugh Twp Muni AuthPA4560048 | 7,800 | Surface water | No current violation flagged |
| Edinboro Water AuthorityPA6250022 | 7,800 | Ground water | No current violation flagged |
| Municipal Authority Of CorryPA6250012 | 7,800 | Ground water | No current violation flagged |
| City Of Dubois Water DepartPA6170016 | 7,794 | Surface water | No current violation flagged |
| Edgeworth Boro Muni AuthPA5020015 | 7,781 | Surface water purchased | No current violation flagged |
| Upper Leacock TownshipPA7360140 | 7,734 | Surface water purchased | No current violation flagged |
| Telford Borough AuthorityPA1460050 | 7,700 | Surface water purchased | No current violation flagged |
| Veolia Water Pa DallasPA2400076 | 7,563 | Ground water | No current violation flagged |
| Maidencreek Twp Water AuthPA3060012 | 7,505 | Ground water | No current violation flagged |
| Littlestown BoroPA7010022 | 7,300 | Ground water | No current violation flagged |
| Upper Saucon Twp Water SupplyPA3390077 | 7,300 | Surface water purchased | No current violation flagged |
| Minersville Municipal Water AuPA3540035 | 7,275 | Surface water | No current violation flagged |
| Blythe Twp Municipal AuthorityPA3540017 | 7,100 | Surface water | No current violation flagged |
| Womelsdorf Robesonia Jt AuthPA3060080 | 7,070 | Ground water | No current violation flagged |
| Pawc Saw Creek EstatesPA2520062 | 7,016 | Ground water | No current violation flagged |
| Indian Creek Valley Water AuthPA5260011 | 7,000 | Surface water | No current violation flagged |
| Palmerton Municipal AuthorityPA3130012 | 7,000 | Ground water | No current violation flagged |
| Richland Twp Water AuthorityPA1090131 | 6,800 | Ground water | No current violation flagged |
| Sewickley Boro Water AuthPA5020050 | 6,800 | Ground water | Other current violation flag |
| Neville Twp Water DeptPA5020029 | 6,750 | Surface water purchased | No current violation flagged |
| Manor Twp Jt Muni AuthPA5030006 | 6,744 | Ground water | Other current violation flag |
| East Cocalico Township AuthPA7360113 | 6,735 | Groundwater under influence of surface water | No current violation flagged |
| Manheim Area Water & Sewer AutPA7360078 | 6,701 | Groundwater under influence of surface water | No current violation flagged |
| Kline Township Mun AuthorityPA3540014 | 6,700 | Ground water | No current violation flagged |
| Harmony Boro Water AuthPA5100042 | 6,669 | Surface water | Other current violation flag |
| Jersey Shore Area Jnt Wat AuthPA4410156 | 6,600 | Surface water | Other current violation flag |
| Catasauqua Mun Water WorksPA3390044 | 6,598 | Ground water | No current violation flagged |
| Aqua Pa Fawn Lake ForestPA2520037 | 6,533 | Ground water | No current violation flagged |
| Derry Boro Muni AuthPA5650049 | 6,500 | Surface water | No current violation flagged |
| Monaca Boro Water DeptPA5040039 | 6,500 | Ground water | Current monitoring/reporting flag |
| Portage Boro Muni AuthPA4110027 | 6,500 | Surface water | No current violation flagged |
| Tyrone Boro Water AuthPA4070021 | 6,500 | Surface water | No current violation flagged |
| Veolia Newberry SystemPA7670061 | 6,480 | Ground water | No current violation flagged |
| Pa American Water SteeltonPA7220036 | 6,428 | Surface water | No current violation flagged |
| Kennett Square Mun Water WorksPA1150108 | 6,328 | Surface water purchased | Current monitoring/reporting flag |
| Somerset Boro Muni Water AuthPA4560042 | 6,309 | Surface water purchased | No current violation flagged |
| Brookville Municipal AuthPA6330004 | 6,220 | Surface water | No current violation flagged |
| East Petersburg BoroughPA7360135 | 6,215 | Surface water purchased | No current violation flagged |
| Titusville Municipal WaterPA6200051 | 6,146 | Ground water | No current violation flagged |
| Washington Twp Muni AuthPA7280026 | 6,134 | Ground water | No current violation flagged |
| Belle Vernon Boro Muni AuthPA5260004 | 6,000 | Surface water purchased | Other current violation flag |
| College Twp Water AuthorityPA4140082 | 6,000 | Ground water | No current violation flagged |
| Schuylkill Haven Boro WaterPA3540041 | 6,000 | Surface water | No current violation flagged |
| Aqua Pa ChalfontPA1090005 | 5,900 | Ground water | No current violation flagged |
| Buffalo Twp Mun Auth FreeportPA5030019 | 5,849 | Surface water | Other current violation flag |
| North East Township WaterPA6250086 | 5,848 | Surface water purchased | No current violation flagged |
| Albion BoroughPA6250007 | 5,842 | Ground water | No current violation flagged |
| Coraopolis Water & Sewer AuthPA5020010 | 5,804 | Surface water purchased | No current violation flagged |
| Mt Union Municipal AuthPA4310016 | 5,801 | Surface water | Other current violation flag |
| Hellertown Borough AuthorityPA3480052 | 5,800 | Ground water | No current violation flagged |
| Beaver Boro Muni AuthPA5040009 | 5,799 | Ground water | No current violation flagged |
| Hilltown Twp Water&Sewer AuthPA1090117 | 5,770 | Surface water purchased | No current violation flagged |
| Pa American Water Co KanePA6420019 | 5,725 | Surface water | No current violation flagged |
| Lower Saucon AuthorityPA3480027 | 5,700 | Surface water purchased | No current violation flagged |
| Mahanoy Twp AuthPA3540011 | 5,584 | Surface water | No current violation flagged |
| Selinsgrove Muni AuthPA4550005 | 5,584 | Ground water | No current violation flagged |
| Pa Amer Water Co FrackvillePA3540032 | 5,583 | Ground water | No current violation flagged |
| Duquesne Water DeptPA5020012 | 5,565 | Surface water purchased | Other current violation flag |
| Aqua Pa Water Co HonesdalePA2640018 | 5,500 | Ground water | No current violation flagged |
| Greencastle Area Water AuthPA7280014 | 5,500 | Surface water | No current violation flagged |
| Birdsboro Muni Water AuthPA3060010 | 5,353 | Surface water | No current violation flagged |
| Tunkhannock Boro Munic AuthPA2660014 | 5,349 | Ground water | No current violation flagged |
| Oxford BoroughPA1150066 | 5,280 | Surface water purchased | No current violation flagged |
| Stewartstown Boro Water AuthPA7670062 | 5,206 | Surface water purchased | No current violation flagged |
| Schwenksville Borough AuthPA1460042 | 5,200 | Surface water purchased | No current violation flagged |
| Mun Auth Of Boro Of BedfordPA4050002 | 5,127 | Surface water | No current violation flagged |
| Aqua Pa Flying Hills Wa SysPA3060018 | 5,100 | Ground water | No current violation flagged |
| Sharpsville Boro Water CoPA6430055 | 5,029 | Surface water purchased | No current violation flagged |
| Towanda Municipal AuthorityPA2080029 | 5,000 | Groundwater under influence of surface water | No current violation flagged |
| Danville Municipal Water AuthPA4470007 | 4,992 | Surface water | No current violation flagged |
| Hamburg Muni Water&Sewer AuthPA3060035 | 4,990 | Surface water | No current violation flagged |
| Montoursville Water CompanyPA4410175 | 4,983 | Ground water | No current violation flagged |
| Tarentum Boro Water DeptPA5020055 | 4,927 | Surface water | Current serious-violator flag |
| Central Indiana Co Water AuthPA5320040 | 4,920 | Surface water | No current violation flagged |
| London Grove Twp Mun AuthPA1150165 | 4,770 | Surface water purchased | No current violation flagged |
| Buckingham Twp Cold SpringPA1090137 | 4,760 | Ground water | No current violation flagged |
| Shrewsbury BoroughPA7670088 | 4,727 | Ground water | No current violation flagged |
| Ridgway Borough Water SystemPA6240012 | 4,700 | Surface water | No current violation flagged |
| Fawn Frazer Jt Water AuthPA5020076 | 4,650 | Surface water purchased | No current violation flagged |
| Freeland Boro Muni Water AuthPA2400054 | 4,610 | Ground water | No current violation flagged |
| North East Borough Water DeptPA6250061 | 4,601 | Surface water | No current violation flagged |
| Millersburg Water AuthPA7220034 | 4,600 | Surface water | No current violation flagged |
| Upper Hanover Water AuthorityPA1460036 | 4,600 | Ground water | Other current violation flag |
| North Sewickley Mun Water AuthPA5040010 | 4,578 | Surface water purchased | Other current violation flag |
| Fairview Twp Water District 1PA6250087 | 4,500 | Surface water purchased | No current violation flagged |
| New Wilmington Boro Water DeptPA6370035 | 4,500 | Surface water purchased | No current violation flagged |
| Northern Cambria Muni WaterPA4110003 | 4,500 | Groundwater under influence of surface water | No current violation flagged |
| Pike Twp Municipal AuthorityPA6170013 | 4,500 | Surface water | No current violation flagged |
| Seneca & Cranberry Mall DistPA6610031 | 4,500 | Ground water | No current violation flagged |
| Pa American Water KittanningPA5030008 | 4,499 | Surface water | No current violation flagged |
| Milford Twp Water AuthorityPA1090125 | 4,497 | Ground water | No current violation flagged |
| New Freedom Boro Water AuthPA7670082 | 4,464 | Surface water purchased | Current monitoring/reporting flag |
| Mifflintown Muni AuthPA4340008 | 4,450 | Surface water | No current violation flagged |
| Slatington Borough Water SysPA3390039 | 4,450 | Surface water | No current violation flagged |
| Franklin System York WaterPA7280045 | 4,400 | Surface water | Other current violation flag |
| Southwestern Cambria Cnty AuthPA4110041 | 4,400 | Surface water purchased | Other current violation flag |
| Brockway Boro Municipal AuthPA6330002 | 4,384 | Surface water | No current violation flagged |
| West Earl Water AuthorityPA7360143 | 4,327 | Surface water purchased | No current violation flagged |
| Aqua Pa Jenks Twp WtpPA6270008 | 4,320 | Ground water | No current violation flagged |
| Penn Estates Utilities IncorpPA2450065 | 4,300 | Ground water | No current violation flagged |
| West Reading Boro WaterPA3060078 | 4,300 | Surface water purchased | No current violation flagged |
| Union City Municipal AuthorityPA6250064 | 4,295 | Surface water | No current violation flagged |
| New Sewickley Twp Muni AuthPA5040085 | 4,276 | Surface water purchased | No current violation flagged |
| Caernarvon Twp AuthPA3060052 | 4,245 | Ground water | No current violation flagged |
| Jackson Twp Water AuthPA4110021 | 4,236 | Surface water purchased | No current violation flagged |
| Pa Amer Water Co SusquehannaPA2580024 | 4,230 | Surface water | No current violation flagged |
| Fleetwood Boro Water SystemPA3060029 | 4,218 | Ground water | No current violation flagged |
| Akron BoroughPA7360128 | 4,200 | Ground water | No current violation flagged |
| Ashland Area Water AuthorityPA3540030 | 4,200 | Surface water | No current violation flagged |
| Pa American Dilliner SystemPA5300012 | 4,200 | Surface water | No current violation flagged |
| Aqua Pa Inc Treasure Lake DivPA6170048 | 4,155 | Ground water | No current violation flagged |
| Buckingham Twp FurlongPA1090159 | 4,150 | Ground water | No current violation flagged |
| Zelienople BoroPA5100093 | 4,123 | Surface water purchased | Other current violation flag |
| Mansfield Borough Mun AuthPA2590038 | 4,100 | Surface water | No current violation flagged |
| Wrightsville Boro Muni AuthPA7670097 | 4,076 | Surface water | No current violation flagged |
| East DonegalPA7360083 | 4,048 | Ground water | No current violation flagged |
| Blairsville Muni AuthPA5320006 | 4,023 | Surface water | No current violation flagged |
| New Oxford Munci AuthPA7010025 | 3,963 | Surface water | No current violation flagged |
| Baden Boro Water DeptPA5040080 | 3,948 | Surface water purchased | No current violation flagged |
| Hegins Hubley AuthorityPA3540047 | 3,870 | Ground water | No current violation flagged |
| Denver BoroPA7360017 | 3,861 | Surface water | No current violation flagged |
| Mountain Water AssnPA5260032 | 3,856 | Surface water purchased | Other current violation flag |
| Masontown Muni Water WorksPA5260013 | 3,841 | Surface water purchased | No current violation flagged |
| Petroleum Valley RwaPA5100147 | 3,800 | Ground water purchased | No current violation flagged |
| Somerset Twp Muni Auth OakridgPA4560046 | 3,800 | Surface water purchased | No current violation flagged |
| Tobyhanna Army DepotPA2450053 | 3,800 | Ground water | No current violation flagged |
| Roamingwood Sewer And WaterPA2640025 | 3,775 | Ground water | No current violation flagged |
| Masonic HomesPA7360025 | 3,707 | Ground water | No current violation flagged |
| Brackenridge Boro Water DeptPA5020006 | 3,700 | Surface water | No current violation flagged |
| Cooper Twp Municipal AuthPA6170041 | 3,700 | Surface water | No current violation flagged |
| Mifflinburg Boro Water DeptPA4600012 | 3,690 | Surface water | No current violation flagged |
| Pleasant Valley Water AuthPA5260006 | 3,630 | Surface water purchased | Current monitoring/reporting flag |
| Aqua Pa Perkiomen TownshipPA1460069 | 3,600 | Ground water | No current violation flagged |
| Middlesex Twp Muni AuthPA7210063 | 3,527 | Ground water | No current violation flagged |
| State Correctional InstPA7210046 | 3,500 | Surface water | No current violation flagged |
| Veolia Water Pa ShavertownPA2400091 | 3,472 | Ground water | No current violation flagged |
| Mountaintop Reg Water AuthPA4140090 | 3,456 | Ground water | Other current violation flag |
| Springdale Boro Water DeptPA5020053 | 3,405 | Ground water | No current violation flagged |
| Borough Of CornwallPA7380007 | 3,343 | Surface water purchased | No current violation flagged |
| Fairview Twp Water Auth Dist 3PA6250040 | 3,320 | Ground water | No current violation flagged |
| Girard Boro Water DeptPA6250049 | 3,301 | Ground water | Other current violation flag |
| Emporium Water CompanyPA6120002 | 3,300 | Surface water | Other current violation flag |
| Spring Twp Water AuthorityPA4140118 | 3,300 | Ground water | No current violation flagged |
| Ligonier Twp Muni AuthPA5650080 | 3,293 | Surface water | No current violation flagged |
| Mt Holly Springs Boro AuthPA7210037 | 3,261 | Ground water | No current violation flagged |
| Walker Twp Water AssocPA4140120 | 3,250 | Ground water | No current violation flagged |
| Conyngham Sugarloaf Joint MaPA2400048 | 3,230 | Ground water | No current violation flagged |
| Lake Meade Muni AuthPA7010036 | 3,221 | Ground water | No current violation flagged |
| Lykens Boro AuthPA7220022 | 3,220 | Surface water | No current violation flagged |
| Reserve Twp Water DeptPA5020047 | 3,204 | Surface water purchased | No current violation flagged |
| Aqua Pa Water Co Sci WaymartPA2640020 | 3,200 | Ground water | No current violation flagged |
| Glendale Valley Municipal AuthPA4110060 | 3,200 | Ground water purchased | No current violation flagged |
| Harmar Twp Muni AuthPA5020009 | 3,200 | Ground water | No current violation flagged |
| Newport Boro Water AuthPA7500022 | 3,200 | Surface water | No current violation flagged |
| Pawc ManwalaminkPA2450049 | 3,200 | Ground water | No current violation flagged |
| Pa Amer Water Co Forest CityPA2359014 | 3,188 | Surface water | No current violation flagged |
| Roaring Spring Muni Water AuthPA4070019 | 3,182 | Ground water | No current violation flagged |
| Coudersport Boro AuthorityPA6530009 | 3,166 | Ground water | Other current violation flag |
| Bellwood Boro AuthPA4070009 | 3,162 | Surface water purchased | No current violation flagged |
| Martinsburg Muni AuthPA4070030 | 3,160 | Ground water | No current violation flagged |
| East Taylor Muni AuthPA4110043 | 3,152 | Surface water purchased | Current monitoring/reporting flag |
| Nanty Glo Water AuthPA4110023 | 3,152 | Surface water | Other current violation flag |
| Aspinwall Boro Water DeptPA5020003 | 3,151 | Surface water purchased | Other current violation flag |
| Quarryville BoroPA7360112 | 3,150 | Surface water purchased | Other current violation flag |
| Redbank Valley Mun AuthPA6160010 | 3,150 | Surface water | Other current violation flag |
| Tower City Borough AuthorityPA3540045 | 3,150 | Ground water | No current violation flagged |
| Gallitzin Boro Water AuthPA4110011 | 3,130 | Surface water | Current serious-violator flag |
| Va Healthcare System HeinzPA5020031 | 3,112 | Surface water purchased | No current violation flagged |
| E Greenville Boro Water DeptPA1460023 | 3,100 | Surface water | No current violation flagged |
| Eaton Sewer & Water CoPA2660039 | 3,100 | Ground water | No current violation flagged |
| Fort Indiantown GapPA7380044 | 3,100 | Surface water purchased | Current monitoring/reporting flag |
| Mawc Furnace RunPA5650031 | 3,100 | Surface water purchased | No current violation flagged |
| Midland Boro Muni AuthPA5040038 | 3,100 | Surface water | Other current violation flag |
| Seven Fields Boro Water DeptPA5100135 | 3,100 | Surface water purchased | No current violation flagged |
| Strasburg Muni Water AuthPA7360118 | 3,100 | Ground water | No current violation flagged |
| Pine Twp Water Distr SystemPA6430061 | 3,082 | Ground water purchased | No current violation flagged |
| Bedminster Mun AuthPA1090104 | 3,042 | Ground water | Current health-based flag |
| Macungie Borough AuthorityPA3390033 | 3,039 | Ground water | No current violation flagged |
| Bcwsa New HopePA1090130 | 3,017 | Surface water | No current violation flagged |
| Mansfield UniversityPA2590812 | 3,000 | Surface water | No current violation flagged |
| Orwigsburg Municipal Water WksPA3540024 | 3,000 | Ground water | No current violation flagged |
| Pawc Appalachian DistPA4180067 | 3,000 | Ground water | No current violation flagged |
| Seven Springs Muni AuthPA4560024 | 3,000 | Groundwater under influence of surface water | No current violation flagged |
| Walnutport AuthorityPA3480032 | 3,000 | Groundwater under influence of surface water | No current violation flagged |
| Ford City Muni Water WorksPA5030005 | 2,991 | Ground water | No current violation flagged |
| Northwestern Lancaster Co AuthPA7360164 | 2,968 | Surface water purchased | No current violation flagged |
| Pawc Wild AcresPA2520034 | 2,943 | Ground water | No current violation flagged |
| Lake City Boro Munic WaterPA6250056 | 2,935 | Ground water | Other current violation flag |
| Lca North Whitehall DivisionPA3390055 | 2,910 | Surface water purchased | No current violation flagged |
| Reynoldsville Water AuthPA6330011 | 2,908 | Surface water | No current violation flagged |
| North Coventry Water SystemPA1150220 | 2,907 | Surface water purchased | No current violation flagged |
| Boswell Boro Muni AuthPA4560030 | 2,900 | Surface water purchased | No current violation flagged |
| Muncy Borough Water CompanyPA4410165 | 2,900 | Ground water | No current violation flagged |
| Muni Auth Of Boro Of MatamorasPA2520044 | 2,900 | Ground water | Current monitoring/reporting flag |
| Sci DallasPA2400090 | 2,900 | Surface water purchased | No current violation flagged |
| Honey Brook Boro WaterPA1150127 | 2,892 | Ground water | No current violation flagged |
| Summit Hill Water AuthorityPA3130013 | 2,890 | Ground water | No current violation flagged |
| West Grove BoroughPA1150105 | 2,873 | Ground water | No current violation flagged |
| Jim Thorpe Borough Water EastPA3130043 | 2,853 | Ground water | No current violation flagged |
| Pa Amer Water Co FallbrookPA2359006 | 2,851 | Surface water | No current violation flagged |
| Nesquehoning Boro Water AuthPA3130026 | 2,850 | Ground water | Other current violation flag |
| State Corr Inst Benner TwpPA4140098 | 2,850 | Surface water | No current violation flagged |
| Warwick Twp Rothsville SystemPA7360120 | 2,846 | Ground water | No current violation flagged |
| Hughesville Borough Water AuthPA4410178 | 2,800 | Ground water | No current violation flagged |
| National Pike Water AuthPA5260048 | 2,800 | Ground water | No current violation flagged |
| Milesburg Borough Water AuthPA4140083 | 2,750 | Ground water | Current monitoring/reporting flag |
| Ohioville Boro Muni AuthPA5040044 | 2,750 | Ground water purchased | No current violation flagged |
| Bonneauville Muni Water AuthPA7010012 | 2,730 | Ground water | No current violation flagged |
| Youngstown Boro Muni AuthPA5650081 | 2,730 | Surface water purchased | No current violation flagged |
| Pine Grove Boro Water SystemPA3540037 | 2,711 | Ground water | No current violation flagged |
| Elizabethville Area AuthPA7220003 | 2,700 | Ground water | No current violation flagged |
| Montgomery Water AuthorityPA4410161 | 2,700 | Ground water | No current violation flagged |
| Albert Gallatin Muni AuthPA5260027 | 2,695 | Surface water | Current health-based flag |
| Bath Municipal Water WorksPA3480066 | 2,680 | Ground water | No current violation flagged |
| Community Utilites WestgatePA3480024 | 2,668 | Surface water purchased | No current violation flagged |
| Elkland Boro Water AuthorityPA2590035 | 2,660 | Ground water | No current violation flagged |
| Aqua Pa Beech MountainPA2400114 | 2,646 | Ground water | No current violation flagged |
| Weatherly Boro Mun AuthPA3130015 | 2,612 | Ground water | No current violation flagged |
| Western Clinton Co Mun AuthPA4180058 | 2,610 | Surface water | Other current violation flag |
| Plumstead Northern SystemPA1090144 | 2,605 | Ground water | No current violation flagged |
| Bentleyville Muni AuthPA5630030 | 2,600 | Surface water purchased | Other current violation flag |
| Ontelaunee TownshipPA3060098 | 2,598 | Surface water purchased | Current monitoring/reporting flag |
| Port Allegany Water DepartmentPA6420021 | 2,591 | Ground water | No current violation flagged |
| Coopersburg Mun Water AuthPA3390046 | 2,570 | Ground water | No current violation flagged |
| Meyersdale Muni AuthPA4560012 | 2,566 | Surface water | No current violation flagged |
| Blair Twp Water & Sewer AuthPA4070011 | 2,550 | Surface water purchased | No current violation flagged |
| Scma-TremontPA3540046 | 2,515 | Surface water | No current violation flagged |
| Biglerville Water CoPA7010020 | 2,501 | Ground water | No current violation flagged |
| Cresson Twp Muni AuthPA4110038 | 2,500 | Ground water purchased | No current violation flagged |
| Greenfield Twp Muni AuthPA4070058 | 2,500 | Ground water | No current violation flagged |
| Plum Creek Municipal AuthPA3540049 | 2,500 | Ground water | No current violation flagged |
| Red Hill Water AuthorityPA1460039 | 2,500 | Ground water | No current violation flagged |
02 / CITY REPORTS
Pennsylvania city water-system reports
Pennsylvania has 0 city reports meeting the publication threshold for covered systems or reported population served.
No qualifying city reports.
03 / COUNTY REPORTS
Pennsylvania county water-system reports
Pennsylvania has 56 county reports meeting the publication threshold for covered systems or reported population served.
Allegheny29 systemsBucks26 systemsLancaster23 systemsBerks19 systemsMontgomery17 systemsSchuylkill16 systemsChester14 systemsBeaver13 systemsFayette13 systemsCambria12 systemsErie12 systemsLehigh12 systemsLuzerne12 systemsYork12 systemsCentre10 systemsNorthampton10 systemsCumberland9 systemsBlair8 systemsButler8 systemsDauphin8 systemsWestmoreland8 systemsCarbon7 systemsFranklin7 systemsSomerset7 systemsAdams6 systemsClearfield6 systemsLycoming6 systemsMonroe6 systemsArmstrong5 systemsMercer5 systemsPike5 systemsClinton4 systemsIndiana4 systemsJefferson4 systemsLebanon4 systemsTioga4 systemsLackawanna3 systemsLawrence3 systemsMcKean3 systemsNorthumberland3 systemsVenango3 systemsWashington3 systemsWayne3 systemsBradford2 systemsClarion2 systemsColumbia2 systemsCrawford2 systemsDelaware2 systemsElk2 systemsGreene2 systemsHuntingdon2 systemsSusquehanna2 systemsWyoming2 systemsMifflin1 systemsPhiladelphia1 systemsWarren1 systems