What was found in ZIP 40906
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 | 1060 µg/L 27% of the EPA limit 4000 µg/L Main supplier: BARBOURVILLE UTILITIES · 16,420 people · 2019
Highest in the ZIP: 1222 µg/L — KNOX COUNTY UTILITY COMMISSION · 8,313 people · 2019 | 2/2 | SYR4 |
| Nitrate | 520 µg/L 5.2% of the EPA limit 10000 µg/L Main supplier: BARBOURVILLE UTILITIES · 16,420 people · 2019 | 2/2 | SYR4 |
| Copper | 99.65 µg/L 7.7% of the EPA limit 1300 µg/L Main supplier: BARBOURVILLE UTILITIES · 16,420 people · 2019
Highest in the ZIP: 495 µg/L — KNOX COUNTY UTILITY COMMISSION · 8,313 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 420 µg/L 4.2% of the EPA limit 10000 µg/L Highest in the ZIP: KNOX COUNTY UTILITY COMMISSION · 8,313 people · 2014 | 1/2 | SYR4 |
| TTHM | 87 µg/L 109% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: BARBOURVILLE UTILITIES · 16,420 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 35 µg/L 58% of the EPA limit 60 µg/L Main supplier: BARBOURVILLE UTILITIES · 16,420 people · 2019
Highest in the ZIP: 58 µg/L — KNOX COUNTY UTILITY COMMISSION · 8,313 people · 2019 | 2/2 | SYR4 |
| Barium | 20.3 µg/L 1% of the EPA limit 2000 µg/L Main supplier: BARBOURVILLE UTILITIES · 16,420 people · 2019
Highest in the ZIP: 30 µg/L — KNOX COUNTY UTILITY COMMISSION · 8,313 people · 2019 | 2/2 | SYR4 |
| Cyanide | 30 µg/L 15% of the EPA limit 200 µg/L Highest in the ZIP: KNOX COUNTY UTILITY COMMISSION · 8,313 people · 2019 | 1/2 | SYR4 |
| Lead | 27.8 µg/L 185% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: BARBOURVILLE UTILITIES · 16,420 people · 2018 | 2/2 | SYR4 |
| Lithium | 14.3 µg/L No EPA limit set Highest in the ZIP: KNOX COUNTY UTILITY COMMISSION · 8,313 people · 2025 | 1/2 | UCMR-5 |
| Arsenic | 2.105 µg/L 21% of the EPA limit 10 µg/L Main supplier: BARBOURVILLE UTILITIES · 16,420 people · 2019 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L Main supplier: BARBOURVILLE UTILITIES · 16,420 people · 2014 | 1/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1 µg/L 17% of the EPA limit 6 µg/L Main supplier: BARBOURVILLE UTILITIES · 16,420 people · 2017 | 1/2 | SYR4 |
| Mercury | 0.3000 µg/L 15% of the EPA limit 2 µg/L Main supplier: BARBOURVILLE UTILITIES · 16,420 people · 2019 | 2/2 | SYR4 |
| Pfhxa | 0.0036 µg/L No EPA limit set Main supplier: BARBOURVILLE UTILITIES · 16,420 people · 2025 | 1/2 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: BARBOURVILLE UTILITIES · 16,420 people · 2024 | 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 40906
| Supplier | State | Population served |
|---|---|---|
| BARBOURVILLE UTILITIES | KY | 16,420 |
| KNOX COUNTY UTILITY COMMISSION | KY | 8,313 |
Frequently asked questions about ZIP 40906 tap water
Is the tap water in ZIP 40906 safe to drink?
EPA testing detected 16 contaminants across the water suppliers serving ZIP 40906. 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 40906?
2 public water suppliers report EPA drinking-water monitoring for ZIP 40906. Each is listed above with its population served.
What contaminants are in ZIP 40906's water?
EPA monitoring detected Fluoride, Nitrate, Copper, Nitrate-Nitrite, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.