Tennessee Water Quality
According to EPA Safe Drinking Water Information System (SDWIS), Tennessee has 454 active community water systems in this extract. PlainEnviro's health-based slice lists 1,192 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 454 community water systems in Tennessee. Source: EPA Safe Drinking Water Information System (SDWIS).
Water Systems with Most Health-Based Records
| # | Water System | Health-Based Records | Health |
|---|---|---|---|
| 1 | WARREN COUNTY U.D. #2 Mcminnville | 118 | Yes |
| 2 | JACKSON COUNTY U.D. #3 Gainesboro | 85 | Yes |
| 3 | CLIFTON WATER DEPT Clifton | 61 | Yes |
| 4 | BYRDSTOWN WATER DEPARTMENT Byrdstown | 54 | Yes |
| 5 | BEDFORD COUNTY U.D. Shelbyville | 40 | Yes |
| 6 | ONEIDA W&S COMM Oneida | 34 | Yes |
| 7 | TRACY CITY WATER SYSTEM Tracy City | 34 | Yes |
| 8 | LAKEVIEW U.D. WEST Rogersville | 28 | Yes |
| 9 | HARTSVILLE-TROUSDALE W&S U.D. Hartsville | 25 | Yes |
| 10 | DAYTON WATER DEPT Dayton | 24 | Yes |
| 11 | MONTEAGLE PUBLIC UTILITY BOARD Monteagle | 24 | Yes |
| 12 | ROGERSVILLE WATER DEPT Rogersville | 24 | Yes |
| 13 | CORDELL HULL UTILITY DISTRICT Riddleton | 23 | Yes |
| 14 | FRANKLIN WATER DEPT Franklin | 23 | Yes |
| 15 | SOUTH GILES UTILITY DISTRICT Minor Hill | 22 | Yes |
| 16 | NORTHWEST CLAY COUNTY UTILITY Moss | 21 | Yes |
| 17 | WOODLAWN UTILITY DISTRICT Woodlawn | 21 | Yes |
| 18 | RIVER LANDING CONDOMINIUM ASSOC Chattanooga | 21 | Yes |
| 19 | GRAYSVILLE WATER DEPT Graysville | 18 | Yes |
| 20 | WILSON CO WATER & WASTEWATER Lebanon | 18 | Yes |
| 21 | FENTRESS COUNTY U.D. Jamestown | 17 | Yes |
| 22 | NORTH STEWART UTILITY DISTRICT Dover | 16 | Yes |
| 23 | JONESBOROUGH WATER DEPT Jonesborough | 16 | Yes |
| 24 | MINOR HILL WATER U.D. Minor Hill | 15 | Yes |
| 25 | WEST STEWART UTILITY DISTRICT Erin | 15 | Yes |
| 26 | NORTH GREENE UTILITIES, INC. Greeneville | 12 | Yes |
| 27 | MONTEREY WATER DEPT Monterey | 12 | Yes |
| 28 | CUNNINGHAM UTILITY DISTRICT Clarksville | 11 | Yes |
| 29 | EAST MONTGOMERY U.D. Clarksville | 10 | Yes |
| 30 | TURNEY CENTER Only | 10 | Yes |
| 31 | PERRYVILLE UTILITY DISTRICT Parsons | 10 | Yes |
| 32 | WITT UTILITY DISTRICT Morristown | 10 | Yes |
| 33 | CARTHAGE WATER SYSTEM Carthage | 9 | Yes |
| 34 | CUMBERLAND UTILITY DISTRICT Harriman | 9 | Yes |
| 35 | SOUTH SIDE U.D. #3 Gordonsville | 9 | Yes |
| 36 | ALEXANDRIA WATER SYSTEM Alexandria | 8 | Yes |
| 37 | ERIN WATER DEPARTMENT Erin | 8 | Yes |
| 38 | JACKSON COUNTY U.D. #1 Gainesboro | 8 | Yes |
| 39 | LA VERGNE WATER SYSTEM Lavergne | 8 | Yes |
| 40 | SPRING CITY WATER SYSTEM Spring City | 8 | Yes |
| 41 | WARREN COUNTY UTILITY DISTRICT Mcminnville | 8 | Yes |
| 42 | TWENTY FIVE UTILITY DISTRICT Riddleton | 7 | Yes |
| 43 | GREEN MEADOW ESTATES OF ROCKFORD LLC Knoxville | 6 | Yes |
| 44 | ALLARDT WATER WORKS Allardt | 6 | Yes |
| 45 | DOWELLTOWN-LIBERTY W.S. Waverly | 6 | Yes |
| 46 | LYNNVILLE WATER DEPT Lynnville | 6 | Yes |
| 47 | ROANE CENTRAL UTILITY DISTRICT Harriman | 6 | Yes |
| 48 | PETERSBURG WATER SYSTEM Petersburg | 6 | Yes |
| 49 | FAIRVIEW UTILITY DISTRICT Pulaski | 6 | Yes |
| 50 | SMITHVILLE WATER SYSTEM Smithville | 6 | Yes |
Most Common Contaminants in Tennessee
| Contaminant | Violations | Systems Affected |
|---|---|---|
| Total Haloacetic Acids (HAA5) | 478 | 43 |
| TTHM | 414 | 38 |
| Interim Enhanced Surface Water Treatment Rule | 78 | 15 |
| Long Term 2 Enhanced Surface Water Treatment Rule | 67 | 22 |
| Groundwater Rule | 42 | 6 |
| Surface Water Treatment Rule | 24 | 9 |
| Lead and Copper Rule | 20 | 11 |
| Revised Total Coliform Rule | 14 | 8 |
| Coliform (TCR) | 11 | 6 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | 11 | 5 |
| Arsenic | 10 | 2 |
| Combined Radium (-226 and -228) | 6 | 1 |
| Coliform (Pre-TCR) | 5 | 2 |
| LEAD AND COPPER RULE REVISIONS | 4 | 3 |
| CARBON, TOTAL | 3 | 1 |
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 Tennessee are included.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.