EPA EXPORT · 13 SEP 2026FEDERAL COMPLIANCE RECORDS · NOT A HOME WATER TEST
TAP WATERLEDGERPublic system compliance records

STATE / TERRITORY LEDGER

Indiana drinking water system records

EPA’s September 2026 export lists 243 active community water systems in Indiana, with 27 current-violation flags and 3 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

Systems243active CWS · pop. 2,500+
Population served4,851,497reported total; may overlap
Current violation flag11.1%27 systems
Serious-violator flag1.2%3 systems

01 / LARGEST SYSTEMS

Indiana community water systems

EPA’s covered Indiana records include 243 active community systems reporting a combined population-served total of 4,851,497, which may overlap.

Population served is a system-reported service figure. It is not a count of unique state residents.

Largest covered community water systems in Indiana
Water systemPopulation servedPrimary sourceCurrent export status
Citizens Water - IndianapolisIN5249004880,345Surface waterNo current violation flagged
Fort Wayne - 3 Rivers Filtration PlantIN5202020269,994Surface waterNo current violation flagged
Indiana American Water - NorthwestIN5245015210,510Surface waterNo current violation flagged
Evansville Water UtilityIN5282002182,444Surface waterNo current violation flagged
South Bend Water WorksIN5271014115,000Ground waterNo current violation flagged
Indiana American Water - S. IndianaIN5210005104,445Ground waterNo current violation flagged
Carmel Water DepartmentIN522900499,927Groundwater under influence of surface waterNo current violation flagged
Indiana American Water - Johnson CountyIN524100586,813Ground waterNo current violation flagged
City Of Bloomington UtilitiesIN525300283,000Surface waterNo current violation flagged
Hammond Water Works DepartmentIN524502078,384Surface waterNo current violation flagged
Indiana American Water - MuncieIN521801274,030Surface waterNo current violation flagged
Lafayette Water WorksIN527901370,835Ground waterNo current violation flagged
Indiana American Water - Terre HauteIN528401267,765Ground waterNo current violation flagged
Citizens Water Of Westfield, LlcIN522900961,493Ground waterNo current violation flagged
Indiana American Water - KokomoIN523400759,313Surface waterNo current violation flagged
Anderson Water DepartmentIN524800255,212Groundwater under influence of surface waterNo current violation flagged
Columbus Municipal UtilityIN520300251,122Ground waterNo current violation flagged
Purdue Univ. Water WorksIN527901550,000Ground waterNo current violation flagged
Mishawaka UtilitiesIN527100949,675Ground waterNo current violation flagged
City Of Lawrence UtilitiesIN524900549,000Ground waterCurrent serious-violator flag
Elkhart Public Works And UtilitiesIN522000846,455Ground waterNo current violation flagged
Indiana American Water - NoblesvilleIN522901545,575Ground waterNo current violation flagged
Indiana American Water - RichmondIN528901241,485Surface waterNo current violation flagged
Valparaiso Department Of Water WorksIN526402936,000Ground waterNo current violation flagged
Indiana American Water - West LafayetteIN527902035,533Ground waterNo current violation flagged
Plainfield Water WorksIN523202034,477Ground waterNo current violation flagged
Bargersville Water DepartmentIN524100134,418Ground waterNo current violation flagged
Michigan City Department Of Water WorksIN524602033,996Surface waterNo current violation flagged
Goshen Water UtilityIN522000932,267Ground waterNo current violation flagged
Brownsburg Water WorksIN523200231,250Surface water purchasedNo current violation flagged
Crown Point Water WorksIN524500830,000Surface water purchasedNo current violation flagged
Schererville Water DepartmentIN524504130,000Surface water purchasedNo current violation flagged
Marion City Water WorksIN522701428,363Ground waterNo current violation flagged
Greenfield Water UtilityIN523000426,671Ground waterNo current violation flagged
East Chicago Water WorksIN524501226,370Surface waterNo current violation flagged
St. John Municipal Water UtilityIN524504325,700Ground waterNo current violation flagged
Highland Water WorksIN524502123,984Surface water purchasedNo current violation flagged
Munster Water CompanyIN524503123,894Surface water purchasedOther current violation flag
Indiana American Water - NewburghIN528700422,215Ground waterNo current violation flagged
Laporte Water WorksIN524601722,197Ground waterNo current violation flagged
Indiana American Water - SeymourIN523600520,725Ground waterNo current violation flagged
Chandler Water Works DepartmentIN528700220,120Ground waterNo current violation flagged
New Castle UtilitiesIN523301119,880Ground waterNo current violation flagged
Indiana American Water - ShelbyvilleIN527300219,093Ground waterNo current violation flagged
Eastern Heights UtilitiesIN522800319,028Ground waterNo current violation flagged
Vincennes Water DepartmentIN524201418,701Ground waterNo current violation flagged
Logansport Municipal Utility-Well FieldIN520901218,369Ground waterNo current violation flagged
Stucker Fork Water UtilityIN527200217,718Surface waterOther current violation flag
Jasper Municipal Water UtilityIN521900917,440Surface waterNo current violation flagged
Huntington Water DepartmentIN523500517,300Ground waterNo current violation flagged
Griffith Water DepartmentIN524501916,893Surface water purchasedNo current violation flagged
Lebanon UtilitiesIN520600316,840Ground waterNo current violation flagged
Dyer Water DepartmentIN524501116,800Surface water purchasedNo current violation flagged
Ramsey Water Company, Inc.IN523100516,475Ground waterCurrent serious-violator flag
Frankfort Water WorksIN521200316,422Ground waterNo current violation flagged
Indiana American Water - CrawfordsvilleIN525400515,930Ground waterNo current violation flagged
Watson Rural Water CompanyIN521001615,750Ground waterNo current violation flagged
New Haven Water DepartmentIN520200915,700Surface water purchasedNo current violation flagged
Sellersburg Water DepartmentIN521001015,655Ground waterNo current violation flagged
Brown County Water UtilityIN520700115,368Ground waterNo current violation flagged
Madison Water DepartmentIN523900615,323Ground waterNo current violation flagged
Martinsville Water UtilityIN525500915,000Ground waterNo current violation flagged
Ellettsville Water WorksIN525300414,500Surface water purchasedNo current violation flagged
Huntertown Water WorksIN520200714,058Ground waterNo current violation flagged
Bedford City UtilitiesIN524700114,000Surface waterNo current violation flagged
Indiana American Water - WarsawIN524303013,835Ground waterNo current violation flagged
Washington Water WorksIN521400713,690Ground waterNo current violation flagged
Jackson County Water UtilityIN523600313,667Ground waterNo current violation flagged
Eastern Bartholomew WaterIN520300413,547Ground waterNo current violation flagged
Patoka Lake Regional WaterIN521901213,503Surface waterNo current violation flagged
Connersville UtilitiesIN522100113,282Ground waterNo current violation flagged
German Township Water District Inc.IN528200312,890Surface water purchasedNo current violation flagged
Auburn Water DepartmentIN521700112,800Ground waterNo current violation flagged
Greencastle Department Of WaterIN526700412,699Groundwater under influence of surface waterNo current violation flagged
Greensburg Municipal Water WorksIN521600212,650Surface waterNo current violation flagged
Indiana American Water - WabashIN528500312,140Ground waterNo current violation flagged
Brazil City Water WorksIN521100112,000Ground waterNo current violation flagged
Patriot Water DepartmentIN527800111,937Ground waterNo current violation flagged
Indiana American Water - LowellIN524502911,908Groundwater under influence of surface waterNo current violation flagged
North Lawrence Water AuthorityIN524700411,625Surface water purchasedNo current violation flagged
Peru Water DepartmentIN525201611,417Ground waterCurrent monitoring/reporting flag
Borden Tri-County RegionIN521000211,000Surface waterNo current violation flagged
Princeton Water DepartmentIN522600810,875Ground waterCurrent monitoring/reporting flag
Speedway Water WorksIN524900810,578Surface waterNo current violation flagged
Danville Water WorksIN523200410,500Surface water purchasedNo current violation flagged
Edwardsville Water CorporationIN522200110,442Ground waterNo current violation flagged
Tri-Township Water CorporationIN521500910,435Ground waterNo current violation flagged
Kendallville Water DepartmentIN525700810,300Ground waterNo current violation flagged
Bluffton Utilities Water DeptIN529000110,298Ground waterNo current violation flagged
City Of BoonvilleIN528700110,260Ground waterNo current violation flagged
Plymouth Water DepartmentIN525001010,241Ground waterNo current violation flagged
Indiana American Water - MooresvilleIN525500610,083Ground waterNo current violation flagged
Pike-Gibson Water, Inc.IN526300310,000Surface water purchasedNo current violation flagged
Bbp Water CompanyIN52600019,903Ground waterNo current violation flagged
Decatur Water DepartmentIN52010029,900Ground waterNo current violation flagged
Columbia City Water DepartmentIN52920049,892Ground waterNo current violation flagged
Angola Water DepartmentIN52760019,340Ground waterNo current violation flagged
Tell City Water DepartmentIN52620049,315Ground waterNo current violation flagged
Dubois Water UtilitiesIN52190029,078Surface water purchasedNo current violation flagged
South Harrison Water CorporationIN52310069,057Ground waterNo current violation flagged
Southern Monroe Water AuthorityIN52530078,877Surface water purchasedNo current violation flagged
Morgan County Rural Water CompanyIN52550108,800Ground waterNo current violation flagged
Hoosier Hills Regional Water DistrictIN52690028,660Ground waterNo current violation flagged
Indiana American Water - CharlestownIN52100038,658Ground waterNo current violation flagged
Southwestern Bartholomew Water Corp.IN52030088,652Ground water purchasedNo current violation flagged
Rural Membership Water Corp. Of Clark CoIN52100098,630Ground water purchasedNo current violation flagged
East Washington Rural WaterIN52880028,613Surface water purchasedNo current violation flagged
Elwood Water & SewageIN52480078,586Ground waterNo current violation flagged
Jennings Water, Inc.IN52400068,370Ground waterNo current violation flagged
Franklin County Water AssociationIN52240028,200Ground waterNo current violation flagged
Hill Water CorporationIN52550218,200Ground waterNo current violation flagged
Salem Water WorksIN52880058,200Surface waterNo current violation flagged
Cuii - Twin LakesIN52450468,000Ground waterNo current violation flagged
East Lawrence Water AuthorityIN52470028,000Surface water purchasedNo current violation flagged
Daviess County Rural WaterIN52140027,969Ground water purchasedNo current violation flagged
Fortville Water WorksIN52300037,638Ground waterNo current violation flagged
Ingalls Water CompanyIN52480127,600Ground waterCurrent monitoring/reporting flag
Linton Municipal Water UtilityIN52280057,430Ground waterNo current violation flagged
University Of Notre DameIN52710207,400Ground waterNo current violation flagged
Scottsburg Water DepartmentIN52720017,369Surface waterNo current violation flagged
Batesville Water UtilityIN52690017,323Surface waterNo current violation flagged
Marysville Otisco Nabb Water Corp.IN52100066,813Ground water purchasedNo current violation flagged
Nappanee Water UtilityIN52200166,800Ground waterNo current violation flagged
Rushville City UtilityIN52700056,800Ground waterNo current violation flagged
Kent Water CompanyIN52390046,750Ground waterNo current violation flagged
Floyds Knobs Water Company, Inc.IN52220026,690Ground water purchasedNo current violation flagged
Van Buren Water, Inc.IN52530086,670Surface water purchasedNo current violation flagged
Indiana American Water - SullivanIN52770096,598Ground waterNo current violation flagged
Naval Weapons Station, CraneIN52510036,538Surface waterNo current violation flagged
Huntingburg Municipal WaterIN52190076,526Surface waterNo current violation flagged
North Vernon Water DepartmentIN52400086,500Surface waterOther current violation flag
Mount Vernon Water WorksIN52650066,426Surface waterNo current violation flagged
Aurora UtilitiesIN52150016,415Ground waterNo current violation flagged
South Lawrence UtilitiesIN52470076,395Ground waterNo current violation flagged
Seelyville Water WorksIN52840116,393Ground waterNo current violation flagged
Garrett Water UtilityIN52170046,390Ground waterNo current violation flagged
Rochester Water DepartmentIN52250066,218Ground waterNo current violation flagged
Portland Municipal Water PlantIN52380076,209Ground waterNo current violation flagged
Rensselaer Water DepartmentIN52370056,200Ground waterNo current violation flagged
Yorktown Water DepartmentIN52180146,200Ground waterNo current violation flagged
North Manchester Water DepartmentIN52850096,100Ground waterNo current violation flagged
Gas City Water DepartmentIN52270066,000Ground waterOther current violation flag
Whiteland Water WorksIN52410095,955Ground water purchasedNo current violation flagged
Citizens Water - WhitestownIN52060145,880Surface water purchasedNo current violation flagged
North Dearborn Water AuthorityIN52150085,775Ground waterNo current violation flagged
Pendleton Water CompanyIN52480195,758Ground waterNo current violation flagged
Corydon Water WorksIN52310015,716Ground waterNo current violation flagged
Citizens Water - MorganIN52550195,705Ground water purchasedNo current violation flagged
Cicero Water DepartmentIN52290055,607Ground waterNo current violation flagged
Hartford City Water WorksIN52050025,600Ground waterNo current violation flagged
Napoleon Community Rural Water Corp.IN52690075,564Surface water purchasedNo current violation flagged
Valley Rural Utility CompanyIN52150045,529Ground water purchasedNo current violation flagged
New Chicago Water WorksIN52450325,500Surface water purchasedNo current violation flagged
Indiana American Water - WinchesterIN52680035,405Ground waterNo current violation flagged
L-M-S Conservancy DistrictIN52150075,375Ground waterNo current violation flagged
Camp AtterburyIN52410155,300Ground water purchasedNo current violation flagged
Monticello Water WorksIN52910115,300Ground waterNo current violation flagged
Tipton Utility Service BIN52800045,200Ground waterNo current violation flagged
Alexandria Water DepartmentIN52480015,149Ground waterOther current violation flag
City Of Greendale UtilitiesIN52150035,092Ground waterNo current violation flagged
Lawrenceburg Municipal UtilitiesIN52150065,000Ground waterNo current violation flagged
Mitchell Water DepartmentIN52470035,000Ground waterCurrent serious-violator flag
Greenville Water UtilityIN52220044,920Ground water purchasedNo current violation flagged
Whiting Water DepartmentIN52450484,900Surface water purchasedNo current violation flagged
Gibson Water AuthorityIN52260094,835Surface water purchasedNo current violation flagged
Aberdeen Pate Water Company, Inc.IN52580014,787Ground waterNo current violation flagged
Clinton Water UtilityIN52830044,773Ground waterNo current violation flagged
B&B Water Project, Inc.IN52530014,695Surface water purchasedNo current violation flagged
Cedar Lake Water WorksIN52450474,600Ground waterCurrent monitoring/reporting flag
Bremen Water DepartmentIN52500034,516Ground waterNo current violation flagged
Plainfield Re-Entry Educational FacilityIN52320074,500Ground waterNo current violation flagged
Edinburgh Water UtilityIN52410024,480Ground waterNo current violation flagged
Town Of ElizabethIN52310074,450Ground waterCurrent monitoring/reporting flag
Indiana American Water - SheridanIN52290144,435Ground waterNo current violation flagged
Canaan UtilitiesIN52390014,428Ground water purchasedNo current violation flagged
Palmyra Water WorksIN52310044,425Ground water purchasedNo current violation flagged
Ligonier Water WorksIN52570104,405Ground waterNo current violation flagged
Ireland Utilities, Inc.IN52190084,395Surface water purchasedNo current violation flagged
Berne Water DepartmentIN52010014,388Ground waterNo current violation flagged
Washington Township WaterIN52100154,315Ground waterNo current violation flagged
Rockville Light & WaterIN52610064,195Ground waterCurrent health-based flag
Tennyson Water UtilityIN52870074,158Surface water purchasedNo current violation flagged
Pittsboro Water CompanyIN52320194,113Surface water purchasedNo current violation flagged
Princes Lake Water DepartmentIN52410074,095Ground waterNo current violation flagged
West Terre Haute WaterIN52840154,075Ground waterOther current violation flag
Bicknell Municipal UtilitiesIN52420014,064Ground waterOther current violation flag
Northwest Jasper Regional Water DistrictIN52370154,054Ground waterNo current violation flagged
Fort Branch Water DepartmentIN52260014,020Ground waterOther current violation flag
Petersburg Water CompanyIN52630024,018Ground waterNo current violation flagged
Reo Water CorporationIN52740093,875Ground waterOther current violation flag
Dupont Water CompanyIN52400043,865Ground water purchasedCurrent monitoring/reporting flag
Washington Twp Water AuthorityIN52530093,825Surface water purchasedNo current violation flagged
Ellis Water Company, Inc.IN52280013,772Ground water purchasedNo current violation flagged
Hebron Water DepartmentIN52640093,724Ground waterNo current violation flagged
Knox Water WorksIN52750023,700Ground waterNo current violation flagged
Santa Claus Water UtilityIN52740103,683Surface water purchasedNo current violation flagged
Paoli Water DepartmentIN52590043,677Surface water purchasedNo current violation flagged
Jasonville Water DepartmentIN52280043,660Ground waterOther current violation flag
East Monroe Water CorporationIN52530033,648Surface water purchasedNo current violation flagged
Indiana American Water - GeorgetownIN52220033,605Ground water purchasedNo current violation flagged
Knox County Water, Inc.IN52420183,525Ground water purchasedNo current violation flagged
Union City Water WorksIN52680103,513Ground waterNo current violation flagged
Posey Township Water Corp.IN52880063,500Surface water purchasedNo current violation flagged
East Fork WaterIN52510043,485Ground waterNo current violation flagged
Decatur Co. Water Corp.IN52160083,440Surface water purchasedNo current violation flagged
Cordry Sweetwater Conservancy DistrictIN52070043,425Ground water purchasedNo current violation flagged
Middlebury Water DepartmentIN52200143,420Ground waterNo current violation flagged
Nashville Water DepartmentIN52070023,315Surface water purchasedNo current violation flagged
Upland Water DepartmentIN52270223,308Ground waterNo current violation flagged
St. Henry Water CorporationIN52190113,293Surface water purchasedNo current violation flagged
Ossian Municipal Water DepartmentIN52900023,289Ground waterNo current violation flagged
Cataract Lake Water CorporationIN52600023,215Ground waterNo current violation flagged
Delphi Water WorksIN52080023,200Ground waterNo current violation flagged
Springs Valley Regional Water DistrictIN52590023,188Surface water purchasedOther current violation flag
New Castle Correctional FacilityIN52330013,160Ground water purchasedNo current violation flagged
Attica Water UtilityIN52230013,147Ground waterNo current violation flagged
Tri-County Conservancy DistrictIN52550223,078Ground water purchasedNo current violation flagged
Jennings Northwest Regional UtilityIN52400022,955Ground water purchasedNo current violation flagged
Oakland City Water DepartmentIN52260052,938Surface waterNo current violation flagged
Ferdinand Water DepartmentIN52190042,918Surface water purchasedNo current violation flagged
Westville Correctional FacilityIN52460012,850Ground waterNo current violation flagged
And-Tro Water Authority - District 1IN52620012,833Ground water purchasedNo current violation flagged
Syracuse Water CompanyIN52430252,810Ground waterNo current violation flagged
Brookville Water WorksIN52240012,800Ground waterNo current violation flagged
Chesterfield Water DepartmentIN52480042,800Ground waterNo current violation flagged
Loogootee Water WorksIN52510052,800Ground waterOther current violation flag
Reelsville Water CompanyIN52670062,800Ground waterNo current violation flagged
Sullivan-Vigo Rural Water Corp.IN52840212,765Ground water purchasedCurrent monitoring/reporting flag
Fairmount Water WorksIN52270052,756Ground waterCurrent monitoring/reporting flag
Avilla Water DepartmentIN52570022,700Ground waterNo current violation flagged
Butler Water DepartmentIN52170032,700Ground waterNo current violation flagged
Crawford County Water Company, Inc.IN52130012,678Ground water purchasedNo current violation flagged
Hamilton Water DepartmentIN52760232,675Ground waterNo current violation flagged
Finch Newton Water, Inc.IN52740032,672Surface water purchasedOther current violation flag
Covington Water DepartmentIN52230022,645Ground waterCurrent health-based flag
Lagrange Department Of Water WorksIN52440032,625Ground waterCurrent monitoring/reporting flag
Hanover Water DepartmentIN52390032,597Ground water purchasedNo current violation flagged
Centerville Water WorksIN52890032,533Ground waterNo current violation flagged
Rockport WaterIN52740072,520Ground waterNo current violation flagged
Putnamville Correctional FacilityIN52670052,505Ground water purchasedNo current violation flagged
Greentown Municipal WaterIN52340062,500Ground waterNo current violation flagged
Peru Utilities/GrissomIN52520112,500Ground waterNo current violation flagged
Shelburn Water UtilitiesIN52770082,500Ground waterNo current violation flagged

02 / CITY REPORTS

Indiana city water-system reports

Indiana has 96 city reports meeting the publication threshold for covered systems or reported population served.

03 / COUNTY REPORTS

Indiana county water-system reports

Indiana has 72 county reports meeting the publication threshold for covered systems or reported population served.