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 | 2026-01-01 → 2026-03-31 |
| MCL | Health-based | Archived | 2025-10-01 → 2025-12-31 |
| MCL | Health-based | Archived | 2025-07-01 → 2025-09-30 |
| MCL | Health-based | Archived | 2025-04-01 → 2025-06-30 |
| MCL | Health-based | Archived | 2025-01-01 → 2025-03-31 |
| MCL | Health-based | Archived | 2024-10-01 → 2024-12-31 |
| MCL | Health-based | Archived | 2024-07-01 → 2024-09-30 |
| MCL | Health-based | Archived | 2024-04-01 → 2024-06-30 |
| MCL | Health-based | Archived | 2024-01-01 → 2024-03-31 |
| MCL | Health-based | Archived | 2023-10-01 → 2023-12-31 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Bromoform | 68.775 µg/L No EPA limit set
worst single sample: 70.1 µg/L | 26/26 | SYR4 | 2012–2019 |
| Dibromochloromethane | 29.6 µg/L No EPA limit set
worst single sample: 29.9 µg/L | 26/26 | SYR4 | 2012–2019 |
| TTHM | 96.025 µg/L 120% of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 106.2 µg/L | 26/26 | SYR4 | 2012–2019 |
| Bromodichloromethane | 7.98 µg/L No EPA limit set
worst single sample: 9.5 µg/L | 25/26 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 13.98 µg/L No EPA limit set
worst single sample: 14.6 µg/L | 25/25 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 15.14 µg/L 25% of the EPA limit 60 µg/L
worst single sample: 18.8 µg/L | 25/25 | SYR4 | 2012–2019 |
| Chloroform | 1.585 µg/L No EPA limit set
worst single sample: 2.3 µg/L | 24/26 | SYR4 | 2012–2019 |
| Nitrate | 1140 µg/L 11% of the EPA limit 10000 µg/L | 16/16 | SYR4 | 2012–2019 |
| Lead | 0.0021 mg/L 14% of the EPA limit 0.0150 mg/L | 11/11 | LCR | 2024 |
| Monobromoacetic Acid | 1.565 µg/L No EPA limit set
worst single sample: 1.6 µg/L | 8/25 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 2.24 µg/L No EPA limit set
worst single sample: 2.6 µg/L | 7/26 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 1.19 µg/L No EPA limit set
worst single sample: 1.2 µg/L | 2/26 | SYR4 | 2012–2019 |
| Arsenic | 6 µg/L 60% of the EPA limit 10 µg/L | 1/1 | SYR4 | 2018 |
| Barium | 19 µg/L 1% of the EPA limit 2000 µg/L | 1/1 | SYR4 | 2018 |
| Copper | 5 µg/L 0.4% of the EPA limit 1300 µg/L | 1/1 | SYR4 | 2018 |
| Chromium | 2 µg/L 2% of the EPA limit 100 µg/L | 1/1 | SYR4 | 2018 |
| Fluoride | 270 µg/L 6.8% of the EPA limit 4000 µg/L | 1/1 | SYR4 | 2018 |
| Gross Beta Particle Activity | 5.14 pCi/L No EPA limit set | 1/1 | SYR4 | 2015 |
| Nitrate-Nitrite | 980 µg/L 9.8% of the EPA limit 10000 µg/L | 1/1 | SYR4 | 2018 |
| Selenium | 2 µg/L 4% of the EPA limit 50 µg/L | 1/1 | SYR4 | 2018 |
37 contaminants tested, none detected
Utility contact
Frequently asked questions about Arrowhead Beach Coop Water Assoc
Is Arrowhead Beach Coop Water Assoc tap water safe to drink?
EPA monitoring detected 20 contaminants in Arrowhead Beach Coop Water Assoc'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 Arrowhead Beach Coop Water Assoc's water?
EPA monitoring detected Bromoform, Dibromochloromethane, TTHM, Bromodichloromethane, Dibromoacetic Acid, and others. The full list with the level and data source for each is above.
How many people does Arrowhead Beach Coop Water Assoc serve?
Arrowhead Beach Coop Water Assoc reports serving 167 people in Washington, per its EPA record.
Has Arrowhead Beach Coop Water Assoc had any water quality violations?
The EPA has 34 violations on file for Arrowhead Beach Coop Water Assoc, of which 18 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.