What was found in ZIP 37807
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 |
|---|---|---|---|
| Fluoride | 1617.3 µg/L 40% of the EPA limit 4000 µg/L Main supplier: HALLSDALE-POWELL U.D. · 84,315 people · 2014 | 1/2 | SYR4 |
| Nitrate | 848.05 µg/L 8.5% of the EPA limit 10000 µg/L Main supplier: HALLSDALE-POWELL U.D. · 84,315 people · 2019 | 1/2 | SYR4 |
| TTHM | 78.92 µg/L 99% of the EPA limit 80 µg/L Main supplier: HALLSDALE-POWELL U.D. · 84,315 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 74.68 µg/L 124% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: HALLSDALE-POWELL U.D. · 84,315 people · 2019 | 2/2 | SYR4 |
| Barium | 37.86 µg/L 1.9% of the EPA limit 2000 µg/L Main supplier: HALLSDALE-POWELL U.D. · 84,315 people · 2014 | 1/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 0.7920 pCi/L 5.3% of the EPA limit 15 pCi/L Main supplier: HALLSDALE-POWELL U.D. · 84,315 people · 2017 | 1/2 | SYR4 |
| Arsenic | 0.5350 µg/L 5.4% of the EPA limit 10 µg/L Main supplier: HALLSDALE-POWELL U.D. · 84,315 people · 2014 | 1/2 | SYR4 |
| Selenium | 0.3790 µg/L 0.8% of the EPA limit 50 µg/L Main supplier: HALLSDALE-POWELL U.D. · 84,315 people · 2014 | 1/2 | SYR4 |
| Pfba | 0.0062 µg/L No EPA limit set Highest in the ZIP: MAYNARDVILLE WATER DEPT · 7,940 people · 2025 | 1/2 | UCMR-5 |
| Pfhxa | 0.0031 µg/L No EPA limit set Highest in the ZIP: MAYNARDVILLE WATER DEPT · 7,940 people · 2025 | 1/2 | UCMR-5 |
| PFBS | 0.0030 µg/L No EPA limit set Highest in the ZIP: MAYNARDVILLE WATER DEPT · 7,940 people · 2025 | 1/2 | UCMR-5 |
| Lead | 0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L Main supplier: HALLSDALE-POWELL U.D. · 84,315 people · 2025
Highest in the ZIP: 0.0020 mg/L — MAYNARDVILLE WATER DEPT · 7,940 people · 2025 | 2/2 | 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 37807
| Supplier | State | Population served |
|---|---|---|
| HALLSDALE-POWELL U.D. | TN | 84,315 |
| MAYNARDVILLE WATER DEPT | TN | 7,940 |
Frequently asked questions about ZIP 37807 tap water
Is the tap water in ZIP 37807 safe to drink?
EPA testing detected 12 contaminants across the water suppliers serving ZIP 37807. 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 37807?
2 public water suppliers report EPA drinking-water monitoring for ZIP 37807. Each is listed above with its population served.
What contaminants are in ZIP 37807's water?
EPA monitoring detected Fluoride, Nitrate, TTHM, Total Haloacetic Acids (HAA5), Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.