Indiana Water Quality
According to EPA Safe Drinking Water Information System (SDWIS), Indiana has 712 active community water systems in this extract. PlainEnviro's health-based slice lists 1,514 violation records across 50 systems with at least one such row. These are historical EPA registry counts, not a statewide drinkability score.
Health-based violation records for 712 community water systems in Indiana. Source: EPA Safe Drinking Water Information System (SDWIS).
Water Systems with Most Health-Based Records
| # | Water System | Health-Based Records | Health |
|---|---|---|---|
| 1 | SCOTTSBURG WATER DEPARTMENT Scottsburg | 120 | Yes |
| 2 | SALEM WATER WORKS Salem | 71 | Yes |
| 3 | KINGMAN WATER WORKS Kingman | 64 | Yes |
| 4 | OOLITIC WATER WORKS Oolitic | 63 | Yes |
| 5 | WESTPORT WATER COMPANY Westport | 55 | Yes |
| 6 | SALT CREEK SERVICES, INC. Bloomington | 49 | Yes |
| 7 | GLENWOOD WATER WORKS Glenwood | 39 | Yes |
| 8 | BURNT PINES WATER ASSOCIATION North Vernon | 38 | Yes |
| 9 | NORTH VERNON WATER DEPARTMENT North Vernon | 35 | Yes |
| 10 | EAST WASHINGTON RURAL WATER Salem | 32 | Yes |
| 11 | MONTEZUMA MUNICIPAL UTILITY Montezuma | 31 | Yes |
| 12 | POSEYVILLE MUNICIPAL WATER DEPARTMENT Poseyville | 29 | Yes |
| 13 | RILEY RESORT LAND TRUST Pierceton | 28 | Yes |
| 14 | BORDEN TRI-COUNTY REGION Borden | 18 | Yes |
| 15 | STUCKER FORK WATER UTILITY Austin | 18 | Yes |
| 16 | LYNNVILLE WATER WORKS Lynnville | 18 | Yes |
| 17 | INDIANA AMERICAN WATER - LOWELL Greenwood | 17 | Yes |
| 18 | GREENSBURG MUNICIPAL WATER WORKS Greensburg | 15 | Yes |
| 19 | LAUREL WATER DEPARTMENT Laurel | 15 | Yes |
| 20 | WILLOW SPRINGS MHP Greenfield | 15 | Yes |
| 21 | PERRYSVILLE WATER WORKS Perrysville | 15 | Yes |
| 22 | KIRKLIN WATER DEPARTMENT Kirklin | 14 | Yes |
| 23 | OAK WOOD CIRCLE Milford | 14 | Yes |
| 24 | INDIANA ACADEMY Cicero | 13 | Yes |
| 25 | LAKE VIEW MOBILE HOME PARK Wabash | 13 | Yes |
| 26 | HAUBSTADT WATER DEPARTMENT Haubstadt | 12 | Yes |
| 27 | LYFORD WATER WORKS Rosedale | 12 | Yes |
| 28 | NAPOLEON COMMUNITY RURAL WATER CORP. Napoleon | 12 | Yes |
| 29 | NEW PEKIN WATER UTILITY Pekin | 12 | Yes |
| 30 | BLOOMINGDALE WATER WORKS Bloomingdale | 11 | Yes |
| 31 | HAMILTON GROVE South Bend | 11 | Yes |
| 32 | PROSSERS COUNTRY ESTATES Monticello | 11 | Yes |
| 33 | HAYDEN WATER ASSOCIATION North Vernon | 10 | Yes |
| 34 | OR-AN TRAILER COURT Waterloo | 10 | Yes |
| 35 | DUFF WATER CORPORATION Huntingburg | 9 | Yes |
| 36 | GOLDEN ACRES MOBILE HOME PARK Waterloo | 9 | Yes |
| 37 | GRABILL WATER WORKS Grabill | 8 | Yes |
| 38 | AMBIA WATER DEPARTMENT Ambia | 8 | Yes |
| 39 | ZIONSVILLE MHP TRUST Zionsville | 8 | Yes |
| 40 | NORWOOD REGIONAL WATER & SEWAGE Huntington | 8 | Yes |
| 41 | VERNON WATER DEPARTMENT Vernon | 8 | Yes |
| 42 | EAST MONROE WATER CORPORATION Bloomington | 8 | Yes |
| 43 | ELLETTSVILLE WATER WORKS Ellettsville | 8 | Yes |
| 44 | LAKE SANTEE RWWD Greensburg | 7 | Yes |
| 45 | CARMEL WATER DEPARTMENT Carmel | 7 | Yes |
| 46 | HARRIS HILLS MOBILE HOME PARK Anderson | 7 | Yes |
| 47 | EDWARDSPORT WATER UTILITY Freelandville | 7 | Yes |
| 48 | CULVERS HILL - NORTH WEBSTER Nappanee | 7 | Yes |
| 49 | WINDSTAR PARK INC. Claypool | 7 | Yes |
| 50 | COUNTRY VIEW ESTATES Crawfordsville | 7 | Yes |
Most Common Contaminants in Indiana
| Contaminant | Violations | Systems Affected |
|---|---|---|
| TTHM | 345 | 25 |
| Total Haloacetic Acids (HAA5) | 341 | 30 |
| Lead and Copper Rule | 171 | 86 |
| Groundwater Rule | 141 | 37 |
| Arsenic | 131 | 9 |
| LEAD AND COPPER RULE REVISIONS | 114 | 64 |
| Revised Total Coliform Rule | 83 | 37 |
| Nitrate | 67 | 5 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | 44 | 20 |
| Interim Enhanced Surface Water Treatment Rule | 29 | 7 |
| CARBON, TOTAL | 19 | 2 |
| Coliform (TCR) | 16 | 12 |
| Surface Water Treatment Rule | 6 | 3 |
| Carbon tetrachloride | 4 | 1 |
| Long Term 2 Enhanced Surface Water Treatment Rule | 2 | 2 |
Cities with Water Quality Issues
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About This Data
Water quality data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations. Only community water systems (CWS) in Indiana are included.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.