Overview
EWG's drinking water quality report for Tennessee shows results of tests conducted by the water utilities in Tennessee and provided to EWG by the Tennessee Department of Environment & Conservation.
Large utilities in Tennessee
Below are utilities in Tennessee serving over 10,000 people, listed alphabetically.
| Utility | Location | People Served |
|---|
Utilities that accumulated/accrued the most violation points as of July 2021 to June 2024 in Tennessee
The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.
| Utility | Location | People Served | Violation Points |
|---|
Large utilities that accumulated/accrued the most violation points as of July 2021 to June 2024 in Tennessee
The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.
| Utility | Location | People Served | Violation Points |
|---|
Contaminants found in Tennessee above health guidelines
| Found above health guidelines | Found | |||
|---|---|---|---|---|
| Contaminant | # of Utilities | People Served | # of Utilities | People Served |
| Total trihalomethanes (TTHMs) | 348 | 7,288,998 | 348 | 7,288,998 | ||
| Haloacetic acids (HAA5) | 336 | 7,199,314 | 337 | 7,203,689 | ||
| Bromodichloromethane | 341 | 7,017,360 | 345 | 7,163,495 | ||
| Chloroform | 332 | 6,994,018 | 352 | 7,140,825 | ||
| Haloacetic acids (HAA9) | 195 | 6,668,448 | 195 | 6,668,448 | ||
| Chromium (hexavalent) | 160 | 5,571,296 | 177 | 6,461,121 | ||
| Nitrate | 265 | 5,355,032 | 322 | 6,763,490 | ||
| Dichloroacetic acid | 287 | 4,135,344 | 293 | 4,812,006 | ||
| Dibromochloromethane | 200 | 3,990,030 | 276 | 5,411,046 | ||
| Trichloroacetic acid | 261 | 3,889,832 | 262 | 3,946,961 | ||
| Radium, combined (-226 & -228) | 126 | 2,471,957 | 147 | 2,591,436 | ||
| Dibromoacetic acid | 49 | 600,449 | 65 | 949,944 | ||
| Perfluorooctanoic acid (PFOA) | 20 | 532,217 | 20 | 532,217 | ||
| Perfluorooctane sulfonate (PFOS) | 29 | 411,652 | 32 | 566,855 | ||
| Nitrate & nitrite | 9 | 352,846 | 9 | 352,846 | ||
| Perfluorohexane sulfonate (PFHXS) | 11 | 247,356 | 11 | 247,356 | ||
| Chlorate | 4 | 182,410 | 125 | 4,534,582 | ||
| Bromoform | 11 | 169,981 | 41 | 1,247,439 | ||
| Tetrachloroethylene (perchloroethylene) | 5 | 159,587 | 7 | 176,159 | ||
| Arsenic | 15 | 113,122 | 15 | 113,122 | ||
| Atrazine | 8 | 112,865 | 37 | 380,527 | ||
| 1,4-Dioxane | 2 | 47,418 | 32 | 1,978,475 | ||
| Cadmium | 2 | 2,312 | 2 | 2,312 | ||
| Thallium | 2 | 1,370 | 3 | 6,713 |
Contaminants found in Tennessee above legal limits
| Contaminant | # of Utilities | People Served |
|---|
Chromium (total) | 2 | 1,370 | |
Thallium | 2 | 1,370 | |
Radium, combined (-226 and -228) | 1 | 992 |
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