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 |
|---|---|---|---|
| MCL | Health-based | Archived | 2006-10-01 → 2006-10-31 |
| MCL | Health-based | Archived | 1992-10-01 → 1992-10-31 |
| MCL | Health-based | Archived | 1992-09-01 → 1992-09-30 |
| MCL | Health-based | Archived | 1992-09-01 → 1992-09-30 |
| MCL | Health-based | Archived | 1992-09-01 → 1992-09-30 |
| Other | Monitoring | Resolved | 2025-07-01 |
| Other | Monitoring | Resolved | 2020-07-01 |
| Other | Monitoring | Resolved | 2015-07-01 |
| MR | Monitoring | Resolved | 2014-01-01 |
| Other | Monitoring | Resolved | 2012-07-01 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 10/10 | LCR | 2023 |
| Nitrate | 620 µg/L 6.2% of the EPA limit 10000 µg/L | 8/10 | SYR4 | 2012–2019 |
| Bromoform | 35.28 µg/L No EPA limit set
worst single sample: 36.6 µg/L | 3/3 | SYR4 | 2014–2017 |
| TTHM | 37.75 µg/L 47% of the EPA limit 80 µg/L
worst single sample: 39.2 µg/L | 3/3 | SYR4 | 2014–2017 |
| Dibromoacetic Acid | 7.075 µg/L No EPA limit set
worst single sample: 7.3 µg/L | 2/2 | SYR4 | 2014–2017 |
| Dibromochloromethane | 2.06 µg/L No EPA limit set
worst single sample: 2.1 µg/L | 2/3 | SYR4 | 2014–2017 |
| Total Haloacetic Acids (HAA5) | 8.12 µg/L 14% of the EPA limit 60 µg/L
worst single sample: 8.4 µg/L | 2/2 | SYR4 | 2014–2017 |
| Arsenic | 4.8 µg/L 48% of the EPA limit 10 µg/L | 1/1 | SYR4 | 2019 |
| Barium | 68.5 µg/L 3.4% of the EPA limit 2000 µg/L | 1/1 | SYR4 | 2019 |
| Bromodichloromethane | 0.5000 µg/L No EPA limit set | 1/3 | SYR4 | 2014–2017 |
| Chromium | 2.4 µg/L 2.4% of the EPA limit 100 µg/L | 1/1 | SYR4 | 2019 |
| Fluoride | 100 µg/L 2.5% of the EPA limit 4000 µg/L | 1/1 | SYR4 | 2019 |
| Monobromoacetic Acid | 1.1 µg/L No EPA limit set | 1/2 | SYR4 | 2014–2017 |
| Nitrate-Nitrite | 80 µg/L 0.8% of the EPA limit 10000 µg/L | 1/1 | SYR4 | 2019 |
| Selenium | 2.9 µg/L 5.8% of the EPA limit 50 µg/L | 1/1 | SYR4 | 2019 |
41 contaminants tested, none detected
Utility contact
Frequently asked questions about Hat Island Community Inc
Is Hat Island Community Inc tap water safe to drink?
EPA monitoring detected 15 contaminants in Hat Island Community Inc'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 Hat Island Community Inc's water?
EPA monitoring detected Lead, Nitrate, Bromoform, TTHM, Dibromoacetic Acid, and others. The full list with the level and data source for each is above.
How many people does Hat Island Community Inc serve?
Hat Island Community Inc reports serving 348 people in Washington, per its EPA record.
Has Hat Island Community Inc had any water quality violations?
The EPA has 325 violations on file for Hat Island Community Inc, of which 5 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.