Indiana tap water
6 of 219 Indiana water systems with full PFAS testing (3%) averaged above a 2024 federal PFAS level at one or more sampling points.
- 767 active community water systems in the EPA file; 205 serve 3,300+ people and have a full PFAS set.
- 176 systems had at least one health-based violation since 2021-10-26.
- 12 systems report a lead 90th percentile above 15 ppb (some results are old; check each system page).
Largest systems
| System | People served | PFAS above a 2024 level? | Health-based violations since 2021-10-26 |
|---|---|---|---|
| Citizens Water - Indianapolis | 880,345 | No | 0 |
| Fort Wayne - 3 Rivers Filtration Plant | 269,994 | No | 1 |
| Indiana American Water - Northwest | 210,510 | No | 0 |
| Evansville Water Utility | 182,444 | No | 0 |
| South Bend Water Works | 115,000 | Yes, at one or more sampling points | 0 |
| Indiana American Water - S. Indiana | 104,445 | No | 0 |
| Carmel Water department | 99,927 | No | 1 |
| Indiana American Water - Johnson County | 86,813 | No | 0 |
Counties
All 23 utilities with a page in Indiana
- Anderson Water department 55,212
- Carmel Water department 99,927
- Citizens Water - Indianapolis 880,345
- Citizens Water of Westfield, LLC 61,493
- City of Bloomington Utilities 83,000
- City of Lawrence Utilities 49,000
- Columbus Municipal Utility 51,122
- Elkhart Public Works and Utilities 46,455
- Evansville Water Utility 182,444
- Fort Wayne - 3 Rivers Filtration Plant 269,994
- Hammond Water Works department 78,384
- Indiana American Water - Johnson County 86,813
- Indiana American Water - Kokomo 59,313
- Indiana American Water - Muncie 74,030
- Indiana American Water - Noblesville 45,575
- Indiana American Water - Northwest 210,510
- Indiana American Water - Richmond 41,485
- Indiana American Water - S. Indiana 104,445
- Indiana American Water - Terre Haute 67,765
- Lafayette Water Works 70,835
- Mishawaka Utilities 49,675
- Purdue Univ. Water Works 50,000
- South Bend Water Works 115,000
Why not "the state's water quality"? You drink from one utility, not a state. Rollups count systems, not people, so one large utility counts the same as a small one. Use the system pages for your actual water.
Not medical or legal advice. UCMR 5 results are screening data, not compliance determinations.
Sources and freshness
Public-water-system facts, violations and lead/copper results: EPA ECHO SDWA download (SDWIS snapshot 2026-10-13). PFAS and lithium results: EPA UCMR 5 final data (sampling 2023–2025). Both are U.S. government works, downloaded 2026-10-26. Numbers are computed by the published method; the same fields are in the open data files.