What was found in Kotlik's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 343 µg/L 3.4% of the EPA limit 10000 µg/L Main supplier: KOTLIK WATER SYSTEM · 617 people · 2017 | 1/1 | SYR4 |
| Nitrate-Nitrite | 272.25 µg/L 2.7% of the EPA limit 10000 µg/L Main supplier: KOTLIK WATER SYSTEM · 617 people · 2019 | 1/1 | SYR4 |
| TTHM | 127.8 µg/L 160% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: KOTLIK WATER SYSTEM · 617 people · 2019 | 1/1 | SYR4 |
| Fluoride | 105 µg/L 2.6% of the EPA limit 4000 µg/L Main supplier: KOTLIK WATER SYSTEM · 617 people · 2012 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 102.05 µg/L 170% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: KOTLIK WATER SYSTEM · 617 people · 2019 | 1/1 | SYR4 |
| Chloroform | 93.92 µg/L No EPA limit set Main supplier: KOTLIK WATER SYSTEM · 617 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 57.22 µg/L No EPA limit set Main supplier: KOTLIK WATER SYSTEM · 617 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 39.98 µg/L No EPA limit set Main supplier: KOTLIK WATER SYSTEM · 617 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 32.455 µg/L No EPA limit set Main supplier: KOTLIK WATER SYSTEM · 617 people · 2019 | 1/1 | SYR4 |
| Barium | 26.1 µg/L 1.3% of the EPA limit 2000 µg/L Main supplier: KOTLIK WATER SYSTEM · 617 people · 2012 | 1/1 | SYR4 |
| Monochloroacetic Acid | 13.85 µg/L No EPA limit set Main supplier: KOTLIK WATER SYSTEM · 617 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 11.547 µg/L No EPA limit set Main supplier: KOTLIK WATER SYSTEM · 617 people · 2019 | 1/1 | SYR4 |
| Bromoform | 8.1935 µg/L No EPA limit set Main supplier: KOTLIK WATER SYSTEM · 617 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 5.1745 µg/L No EPA limit set Main supplier: KOTLIK WATER SYSTEM · 617 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 1.9 µg/L No EPA limit set Main supplier: KOTLIK WATER SYSTEM · 617 people · 2019 | 1/1 | SYR4 |
| Chromium | 1.01 µg/L 1% of the EPA limit 100 µg/L Main supplier: KOTLIK WATER SYSTEM · 617 people · 2012 | 1/1 | SYR4 |
| Selenium | 0.5700 µg/L 1.1% of the EPA limit 50 µg/L Main supplier: KOTLIK WATER SYSTEM · 617 people · 2012 | 1/1 | SYR4 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: KOTLIK WATER SYSTEM · 617 people · 2025 | 1/1 | LCR |
Water suppliers serving Kotlik
| Supplier | Population served |
|---|---|
| KOTLIK WATER SYSTEM | 617 |
Frequently asked questions about Kotlik tap water
Is Kotlik tap water safe to drink?
EPA testing detected 18 contaminants in the water serving Kotlik. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Kotlik?
1 public water supplier report drinking-water monitoring for Kotlik, Alaska to the EPA. Each is listed above with its population served.
What contaminants are in Kotlik's water?
The contaminants EPA monitoring detected in Kotlik include Nitrate, Nitrate-Nitrite, TTHM, Fluoride, Total Haloacetic Acids (HAA5). The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.