All water systems in Indiana
3,935 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Citizens Water Indianapolis Indianapolis · Marion County |
880,345 | 0 | 0 | |
|
Fort Wayne 3 Rivers Filtration Plant Fort Wayne · Allen County |
269,994 | 1 | 0 | |
|
Indiana American Water Northwest Gary, Merrillville · Lake County |
210,510 | 0 | 0 | |
|
Evansville Water Utility Evansville · Vanderburgh County |
182,444 | 0 | 0 | |
|
South Bend Water Works South Bend · St. Joseph County |
115,000 | 1 | 0 | |
|
Indiana American Water S. Indiana Jeffersonville · Clark County |
104,445 | 0 | 0 | |
|
Carmel Water Department Carmel · Hamilton County |
99,927 | 1 | 0 | |
|
Indiana American Water Johnson County Greenwood · Johnson County |
86,813 | 0 | 0 | |
|
City of Bloomington Utilities Bloomington · Monroe County |
83,000 | 1 | 0 | |
|
Hammond Water Works Department Hammond · Lake County |
78,384 | 1 | 0 | |
|
Indiana American Water Muncie Muncie · Delaware County |
74,030 | 0 | 0 | |
|
Lafayette Water Works Lafayette · Tippecanoe County |
70,835 | 2 | 0 | |
|
Indiana American Water Terre Haute Terre Haute · Vigo County |
67,765 | 0 | 0 | |
|
Citizens Water of Westfield, LLC Carmel · Hamilton County |
61,493 | 0 | 0 | |
|
Indiana American Water Kokomo Kokomo · Howard County |
59,313 | 0 | 0 | |
|
Anderson Water Department Anderson · Madison County |
55,212 | 2 | 0 | |
|
Columbus Municipal Utility Columbus · Bartholomew County |
51,122 | 0 | 0 | |
|
Purdue Univ. Water Works West Lafayette · Tippecanoe County |
50,000 | 0 | 0 | |
|
Mishawaka Utilities Mishawaka · St. Joseph County |
49,675 | 0 | 0 | |
|
City of Lawrence Utilities Lawrence · Marion County |
49,000 | 1 | 0 | |
|
Elkhart Public Works and Utilities Elkhart · Elkhart County |
46,455 | 1 | 0 | |
|
Indiana American Water Noblesville Noblesville · Hamilton County |
45,575 | 0 | 0 | |
|
Indiana American Water Richmond Richmond · Wayne County |
41,485 | 0 | 0 | |
|
Valparaiso Department of Water Works Valparaiso · Porter County |
36,000 | 0 | 0 | |
|
Indiana American Water West Lafayette West Lafayette · Tippecanoe County |
35,533 | 0 | 0 | |
|
Plainfield Water Works Plainfield · Hendricks County |
34,477 | 1 | 0 | |
|
Bargersville Water Department Bargersville · Johnson County |
34,418 | 3 | 0 | |
|
Michigan City Department of Water Works Michigan City · LaPorte County |
33,996 | 1 | 0 | |
|
Goshen Water Utility Goshen · Elkhart County |
32,267 | 1 | 0 | |
|
Brownsburg Water Works Brownsburg · Hendricks County |
31,250 | 0 | 0 | |
|
Crown Point Water Works Crown Point · Lake County |
30,000 | 1 | 0 | |
|
Schererville Water Department Schererville · Lake County |
30,000 | 1 | 0 | |
|
Marion City Water Works Marion · Grant County |
28,363 | 0 | 0 | |
|
Greenfield Water Utility Greenfield · Hancock County |
26,671 | 1 | 0 | |
|
East Chicago Water Works East Chicago · Lake County |
26,370 | 3 | 0 | |
|
St. John Municipal Water Utility St. John · Lake County |
25,700 | 0 | 0 | |
|
Highland Water Works Highland (highlands) · Lake County |
23,984 | 0 | 0 | |
|
Munster Water Company Munster · Lake County |
23,894 | 2 | 1 | |
|
Indiana American Water Newburgh Newburgh · Warrick County |
22,215 | 0 | 0 | |
|
Laporte Water Works Laporte · LaPorte County |
22,197 | 2 | 0 | |
|
Indiana American Water Seymour Seymour · Jackson County |
20,725 | 0 | 0 | |
|
Chandler Water Works Department Newburgh · Warrick County |
20,120 | 0 | 0 | |
|
New Castle Utilities New Castle · Henry County |
19,880 | 3 | 0 | |
|
Indiana American Water Shelbyville Shelbyville · Shelby County |
19,093 | 0 | 0 | |
|
Eastern Heights Utilities Bloomfield · Greene County |
19,028 | 0 | 0 | |
|
Vincennes Water Department Vincennes · Knox County |
18,701 | 2 | 0 | |
|
Logansport Municipal Utility-Well Field Logansport · Cass County |
18,369 | 1 | 0 | |
|
Stucker Fork Water Utility Austin · Scott County |
17,718 | 4 | 0 | |
|
Jasper Municipal Water Utility Jasper · Dubois County |
17,440 | 1 | 0 | |
|
Huntington Water Department Huntington · Huntington County |
17,300 | 0 | 0 |
About this data
Rules violated counts the rules a system was in violation of in the past three years, including monitoring and reporting lapses; one rule can carry several violations. Unresolved is the number of those rules still in violation at EPA's latest data refresh.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Indiana records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.