What was found in ZIP 37664
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 | 781 µg/L 7.8% of the EPA limit 10000 µg/L Main supplier: KINGSPORT WATER DEPT · 107,739 people · 2019
Highest in the ZIP: 964 µg/L — BLOOMINGDALE UTILITY DISTRICT · 13,318 people · 2019 | 2/2 | SYR4 |
| Lithium | 76.6 µg/L No EPA limit set Main supplier: KINGSPORT WATER DEPT · 107,739 people · 2023 | 1/2 | UCMR-5 |
| TTHM | 63.13 µg/L 79% of the EPA limit 80 µg/L Main supplier: KINGSPORT WATER DEPT · 107,739 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 51.58 µg/L 86% of the EPA limit 60 µg/L Main supplier: KINGSPORT WATER DEPT · 107,739 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 0.8950 pCi/L 6% of the EPA limit 15 pCi/L Highest in the ZIP: BLOOMINGDALE UTILITY DISTRICT · 13,318 people · 2016 | 1/2 | SYR4 |
| PFOS | 0.0059 µg/L No EPA limit set Main supplier: KINGSPORT WATER DEPT · 107,739 people · 2023 | 2/2 | UCMR-5 |
| Lead | 0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L Main supplier: KINGSPORT WATER DEPT · 107,739 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 37664
| Supplier | State | Population served |
|---|---|---|
| KINGSPORT WATER DEPT | TN | 107,739 |
| BLOOMINGDALE UTILITY DISTRICT | TN | 13,318 |
Frequently asked questions about ZIP 37664 tap water
Is the tap water in ZIP 37664 safe to drink?
EPA testing detected 7 contaminants across the water suppliers serving ZIP 37664. 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 37664?
2 public water suppliers report EPA drinking-water monitoring for ZIP 37664. Each is listed above with its population served.
What contaminants are in ZIP 37664's water?
EPA monitoring detected Nitrate, Lithium, TTHM, Total Haloacetic Acids (HAA5), Gross Alpha, Excl. Radon And U, and others across this ZIP's suppliers. The full list with levels and sources is above.