What was found in ZIP 37178
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 1190 µg/L 12% of the EPA limit 10000 µg/L Main supplier: ERIN WATER DEPARTMENT · 8,239 people · 2019 | 3/3 | SYR4 |
| Fluoride | 570 µg/L 14% of the EPA limit 4000 µg/L Main supplier: ERIN WATER DEPARTMENT · 8,239 people · 2014 | 1/3 | SYR4 |
| TTHM | 89.94999999999999 µg/L 112% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: ERIN WATER DEPARTMENT · 8,239 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 72.61999999999999 µg/L 121% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: ERIN WATER DEPARTMENT · 8,239 people · 2019 | 3/3 | SYR4 |
| Barium | 21 µg/L 1.1% of the EPA limit 2000 µg/L Main supplier: ERIN WATER DEPARTMENT · 8,239 people · 2014 | 1/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2 pCi/L 13% of the EPA limit 15 pCi/L Main supplier: ERIN WATER DEPARTMENT · 8,239 people · 2015 | 1/3 | SYR4 |
| Atrazine | 1.3176999999999999 µg/L 44% of the EPA limit 3 µg/L Main supplier: ERIN WATER DEPARTMENT · 8,239 people · 2019 | 2/3 | SYR4 |
| Toluene | 0.6060 µg/L 0.1% of the EPA limit 1000 µg/L Highest in the ZIP: DOVER WATER DEPT · 4,037 people · 2019 | 1/3 | SYR4 |
| Pfba | 0.0084 µg/L No EPA limit set Main supplier: ERIN WATER DEPARTMENT · 8,239 people · 2025 | 1/3 | UCMR-5 |
| Lead | 0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L Main supplier: ERIN WATER DEPARTMENT · 8,239 people · 2025 | 3/3 | LCR |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
Water suppliers serving ZIP 37178
| Supplier | State | Population served |
|---|---|---|
| ERIN WATER DEPARTMENT | TN | 8,239 |
| TENNESSEE RIDGE WATER SYSTEM | TN | 4,169 |
| DOVER WATER DEPT | TN | 4,037 |
Frequently asked questions about ZIP 37178 tap water
Is the tap water in ZIP 37178 safe to drink?
EPA testing detected 10 contaminants across the water suppliers serving ZIP 37178. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 37178?
3 public water suppliers report EPA drinking-water monitoring for ZIP 37178. Each is listed above with its population served.
What contaminants are in ZIP 37178's water?
EPA monitoring detected Nitrate, Fluoride, TTHM, Total Haloacetic Acids (HAA5), Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.