Compliance record
Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.
| Violation | Type | Status | Period |
|---|---|---|---|
| TT | Health-based | Resolved | 2024-04-01 → 2024-04-30 |
| TT | Health-based | Resolved | 2024-04-01 → 2024-04-30 |
| TT | Health-based | Resolved | 2024-04-01 → 2024-04-30 |
| TT | Health-based | Resolved | 2024-04-01 → 2024-04-30 |
| TT | Health-based | Resolved | 2024-04-01 → 2024-04-30 |
| TT | Health-based | Resolved | 2024-04-01 → 2024-04-30 |
| TT | Health-based | Resolved | 2024-02-01 → 2024-02-29 |
| TT | Health-based | Resolved | 2024-02-01 → 2024-02-29 |
| TT | Health-based | Resolved | 2024-02-01 → 2024-02-29 |
| TT | Health-based | Resolved | 2024-01-01 → 2024-01-31 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Copper | 3239 µg/L 249% of the EPA limit, at the 95th percentile of samples — 1300 µg/L
worst single sample: 4300 µg/L | 148/148 | SYR4 | 2012–2019 |
| Lead | 49.57 µg/L 330% of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 140 µg/L | 114/147 | SYR4 | 2012–2019 |
| Lead | 0.0140 mg/L 93% of the EPA limit 0.0150 mg/L | 38/38 | LCR | 2025 |
| Bromodichloromethane | 8.7695 µg/L No EPA limit set
worst single sample: 10.4 µg/L | 32/32 | SYR4 | 2012–2019 |
| Chloroform | 47.425 µg/L No EPA limit set
worst single sample: 64.2 µg/L | 32/32 | SYR4 | 2012–2019 |
| TTHM | 55.34 µg/L 69% of the EPA limit 80 µg/L
worst single sample: 68.5 µg/L | 32/32 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 29.985 µg/L No EPA limit set
worst single sample: 42.9 µg/L | 30/30 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 72.79 µg/L 121% of the EPA limit, at the 95th percentile of samples — 60 µg/L
worst single sample: 109 µg/L | 30/30 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 41.46 µg/L No EPA limit set
worst single sample: 66.1 µg/L | 30/30 | SYR4 | 2012–2019 |
| Dibromochloromethane | 1.763 µg/L No EPA limit set
worst single sample: 2.12 µg/L | 18/32 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 475.3 µg/L 4.8% of the EPA limit 10000 µg/L
worst single sample: 487 µg/L | 7/7 | SYR4 | 2012–2019 |
| Nitrate | 1080 µg/L 11% of the EPA limit 10000 µg/L | 2/2 | SYR4 | 2017 |
| Dibromoacetic Acid | 1.09 µg/L No EPA limit set | 1/30 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 3.14 µg/L No EPA limit set | 1/30 | SYR4 | 2012–2019 |
28 contaminants tested, none detected
Utility contact
Frequently asked questions about Unalakleet City Water Supply
Is Unalakleet City Water Supply tap water safe to drink?
EPA monitoring detected 14 contaminants in Unalakleet City Water Supply's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.
What contaminants were detected in Unalakleet City Water Supply's water?
EPA monitoring detected Copper, Lead, Lead, Bromodichloromethane, Chloroform, and others. The full list with the level and data source for each is above.
How many people does Unalakleet City Water Supply serve?
Unalakleet City Water Supply reports serving 757 people in Alaska, per its EPA record.
Has Unalakleet City Water Supply had any water quality violations?
The EPA has 932 violations on file for Unalakleet City Water Supply, of which 264 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.
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.