What was found in ZIP 37840
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 | 785 µg/L 7.9% of the EPA limit 10000 µg/L Main supplier: ANDERSON COUNTY W.A. · 25,700 people · 2019
Highest in the ZIP: 1320 µg/L — OLIVER SPRINGS WATER BOARD · 5,361 people · 2019 | 2/2 | SYR4 |
| Fluoride | 866.3 µg/L 22% of the EPA limit 4000 µg/L Main supplier: ANDERSON COUNTY W.A. · 25,700 people · 2015 | 2/2 | SYR4 |
| Barium | 32.97 µg/L 1.6% of the EPA limit 2000 µg/L Main supplier: ANDERSON COUNTY W.A. · 25,700 people · 2015
Highest in the ZIP: 87 µg/L — OLIVER SPRINGS WATER BOARD · 5,361 people · 2014 | 2/2 | SYR4 |
| TTHM | 72.9 µg/L 91% of the EPA limit 80 µg/L Main supplier: ANDERSON COUNTY W.A. · 25,700 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 65.6 µg/L 109% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: ANDERSON COUNTY W.A. · 25,700 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2.6 pCi/L 17% of the EPA limit 15 pCi/L Main supplier: ANDERSON COUNTY W.A. · 25,700 people · 2016
Highest in the ZIP: 4.3 pCi/L — OLIVER SPRINGS WATER BOARD · 5,361 people · 2014 | 2/2 | SYR4 |
| Selenium | 0.3791 µg/L 0.8% of the EPA limit 50 µg/L Main supplier: ANDERSON COUNTY W.A. · 25,700 people · 2015 | 1/2 | SYR4 |
| PFBS | 0.0040 µg/L No EPA limit set Main supplier: ANDERSON COUNTY W.A. · 25,700 people · 2025 | 1/2 | UCMR-5 |
| Lead | 0.0023 mg/L 15% of the EPA limit 0.0150 mg/L Main supplier: ANDERSON COUNTY W.A. · 25,700 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 37840
| Supplier | State | Population served |
|---|---|---|
| ANDERSON COUNTY W.A. | TN | 25,700 |
| OLIVER SPRINGS WATER BOARD | TN | 5,361 |
Frequently asked questions about ZIP 37840 tap water
Is the tap water in ZIP 37840 safe to drink?
EPA testing detected 9 contaminants across the water suppliers serving ZIP 37840. 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 37840?
2 public water suppliers report EPA drinking-water monitoring for ZIP 37840. Each is listed above with its population served.
What contaminants are in ZIP 37840's water?
EPA monitoring detected Nitrate, Fluoride, Barium, TTHM, Total Haloacetic Acids (HAA5), and others across this ZIP's suppliers. The full list with levels and sources is above.