What was found in ZIP 37771
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 | 698.9 µg/L 7% of the EPA limit 10000 µg/L Main supplier: WEST KNOX UTILITY DISTRICT · 77,825 people · 2019
Highest in the ZIP: 1414 µg/L — LENOIR CITY UTILITY BOARD · 34,786 people · 2019 | 2/3 | SYR4 |
| TTHM | 71.93 µg/L 90% of the EPA limit 80 µg/L Main supplier: WEST KNOX UTILITY DISTRICT · 77,825 people · 2019
Highest in the ZIP: 92.99 µg/L — WATTS BAR EAST U.D. · 4,280 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 63.665 µg/L 106% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: WEST KNOX UTILITY DISTRICT · 77,825 people · 2019 | 3/3 | SYR4 |
| PFBS | 0.0062 µg/L No EPA limit set Highest in the ZIP: LENOIR CITY UTILITY BOARD · 34,786 people · 2025 | 2/3 | UCMR-5 |
| Pfba | 0.0053 µg/L No EPA limit set Highest in the ZIP: WATTS BAR EAST U.D. · 4,280 people · 2024 | 1/3 | UCMR-5 |
| Pfhxa | 0.0046 µg/L No EPA limit set Highest in the ZIP: LENOIR CITY UTILITY BOARD · 34,786 people · 2025 | 1/3 | UCMR-5 |
| PFOS | 0.0046 µg/L No EPA limit set Highest in the ZIP: LENOIR CITY UTILITY BOARD · 34,786 people · 2025 | 1/3 | UCMR-5 |
| Pfpea | 0.0032 µg/L No EPA limit set Highest in the ZIP: LENOIR CITY UTILITY BOARD · 34,786 people · 2025 | 1/3 | UCMR-5 |
| Lead | 0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L Main supplier: WEST KNOX UTILITY DISTRICT · 77,825 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 37771
| Supplier | State | Population served |
|---|---|---|
| WEST KNOX UTILITY DISTRICT | TN | 77,825 |
| LENOIR CITY UTILITY BOARD | TN | 34,786 |
| WATTS BAR EAST U.D. | TN | 4,280 |
Frequently asked questions about ZIP 37771 tap water
Is the tap water in ZIP 37771 safe to drink?
EPA testing detected 9 contaminants across the water suppliers serving ZIP 37771. 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 37771?
3 public water suppliers report EPA drinking-water monitoring for ZIP 37771. Each is listed above with its population served.
What contaminants are in ZIP 37771's water?
EPA monitoring detected Nitrate, TTHM, Total Haloacetic Acids (HAA5), PFBS, Pfba, and others across this ZIP's suppliers. The full list with levels and sources is above.