Indiana public water systems
3,969 active systems regulated under the Safe Drinking Water Act, serving a reported 5.8M people across 109 counties.
Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.
Active systems
3,969
Population served
5.8M
Community systems
770
Groundwater share
97.2%
System types in Indiana
770
Community water system
603
Non-transient non-community water system
2,596
Transient non-community water system
Largest water systems in Indiana
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Citizens Water - Indianapolis | Marion | 880,345 | Community | Surface water |
| 2 | Fort Wayne - 3 Rivers Filtration Plant | Allen | 269,994 | Community | Surface water |
| 3 | Indiana American Water - Northwest | Lake | 210,510 | Community | Surface water |
| 4 | Evansville Water Utility | Vanderburgh | 182,444 | Community | Surface water |
| 5 | South Bend Water Works | St. Joseph | 115,000 | Community | Groundwater |
| 6 | Indiana American Water - S. Indiana | Clark | 104,445 | Community | Groundwater |
| 7 | Carmel Water Department | Hamilton | 99,927 | Community | Groundwater under influence of surface water |
| 8 | Indiana American Water - Johnson County | Johnson | 86,813 | Community | Groundwater |
| 9 | City of Bloomington Utilities | Monroe | 83,000 | Community | Surface water |
| 10 | Hammond Water Works Department | Lake | 78,384 | Community | Surface water |
| 11 | Indiana American Water - Muncie | Delaware | 74,030 | Community | Surface water |
| 12 | Lafayette Water Works | Tippecanoe | 70,835 | Community | Groundwater |
| 13 | Indiana American Water - Terre Haute | Vigo | 67,765 | Community | Groundwater |
| 14 | Citizens Water of Westfield, LLC | Hamilton | 61,493 | Community | Groundwater |
| 15 | Indiana American Water - Kokomo | Howard | 59,313 | Community | Surface water |
| 16 | Anderson Water Department | Madison | 55,212 | Community | Groundwater under influence of surface water |
| 17 | Columbus Municipal Utility | Bartholomew | 51,122 | Community | Groundwater |
| 18 | Purdue Univ. Water Works | Tippecanoe | 50,000 | Community | Groundwater |
| 19 | Mishawaka Utilities | St. Joseph | 49,675 | Community | Groundwater |
| 20 | City of Lawrence Utilities | Marion | 49,000 | Community | Groundwater |
| 21 | Elkhart Public Works and Utilities | Elkhart | 46,455 | Community | Groundwater |
| 22 | Indiana American Water - Noblesville | Hamilton | 45,575 | Community | Groundwater |
| 23 | Indiana American Water - Richmond | Wayne | 41,485 | Community | Surface water |
| 24 | Valparaiso Department of Water Works | Porter | 36,000 | Community | Groundwater |
| 25 | Indiana American Water - West Lafayette | Tippecanoe | 35,533 | Community | Groundwater |
By county
Kosciusko291 systemsElkhart284 systemsSt. Joseph221 systemsLaGrange211 systemsSteuben145 systemsLaPorte126 systemsLake110 systemsNoble102 systemsTippecanoe89 systemsAllen87 systemsMarshall87 systemsPorter81 systemsWhite78 systemsAdams74 systemsMiami68 systemsHamilton66 systemsJasper65 systemsDelaware63 systemsHancock60 systemsWayne59 systemsMarion57 systemsHenry56 systemsHendricks53 systemsHoward52 systemsWabash52 systemsDeKalb50 systemsGrant48 systemsMadison48 systemsCass47 systemsMontgomery47 systemsStarke47 systemsRandolph40 systemsCarroll39 systemsWhitley39 systemsNewton38 systemsShelby37 systemsFulton34 systemsHuntington33 systemsJohnson33 systemsParke33 systemsClinton32 systemsPulaski32 systemsBoone30 systemsJay30 systemsVigo30 systemsRush26 systemsPutnam25 systemsWells25 systemsMorgan23 systemsWarren23 systemsOwen19 systemsKnox18 systemsDecatur17 systemsFountain17 systemsTipton17 systemsBartholomew16 systemsVermillion16 systemsClay15 systemsSpencer15 systemsUnion14 systemsSullivan13 systemsGibson12 systemsClark11 systemsFranklin11 systemsJefferson11 systemsMonroe11 systemsDubois11 systemsDearborn10 systemsFayette10 systemsJennings10 systemsRipley10 systemsWarrick10 systemsJackson9 systemsPosey9 systemsBenton8 systemsBlackford8 systemsDaviess8 systemsGreene8 systemsHarrison8 systemsWashington8 systemsSwitzerland7 systemsOrange6 systemsVanderburgh6 systemsCrawford6 systemsLawrence6 systemsPerry6 systemsPike6 systemsBrown5 systemsMartin5 systemsFloyd4 systemsOhio3 systemsDarke3 systems
Scott2 systems
Berrien2 systems
Branch2 systems
Boise1 systems
Iroquois1 systems
Will1 systems
Arenac1 systems
Wexford1 systems
Washtenaw1 systems
Kalamazoo1 systems
Allegan1 systems
Beltrami1 systems
Churchill1 systems
Paulding1 systems
Portage1 systems
Mercer1 systems
Bailey1 systems