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 | Unaddressed | 2024-10-17 |
| MCL | Health-based | Archived | 2024-06-26 → 2025-06-25 |
| MCL | Health-based | Archived | 2024-04-01 → 2024-06-30 |
| MCL | Health-based | Archived | 2023-04-01 → 2023-06-30 |
| MCL | Health-based | Archived | 2022-10-01 → 2022-12-31 |
| MCL | Health-based | Archived | 2022-07-01 → 2022-09-30 |
| MCL | Health-based | Archived | 2022-04-01 → 2022-06-30 |
| MCL | Health-based | Archived | 2022-01-01 → 2022-03-31 |
| MCL | Health-based | Archived | 2021-10-01 → 2021-12-31 |
| MCL | Health-based | Archived | 2020-07-01 → 2020-09-30 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 3500 µg/L 35% of the EPA limit 10000 µg/L
worst single sample: 5000 µg/L | 96/102 | SYR4 | 2012–2019 |
| Combined Uranium | 15.496 µg/L 52% of the EPA limit 30 µg/L
worst single sample: 17.284 µg/L | 41/42 | SYR4 | 2012–2019 |
| Arsenic | 14.2 µg/L 142% of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 15 µg/L | 17/17 | SYR4 | 2015–2019 |
| Fluoride | 5320 µg/L 133% of the EPA limit, at the 95th percentile of samples — 4000 µg/L
worst single sample: 5400 µg/L | 17/17 | SYR4 | 2015–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 7/7 | LCR | 2024 |
| Nitrate-Nitrite | 340150 µg/L 3402% of the EPA limit, at the 95th percentile of samples — 10000 µg/L
worst single sample: 400000 µg/L | 4/4 | SYR4 | 2015–2019 |
| Selenium | 10.85 µg/L 22% of the EPA limit 50 µg/L
worst single sample: 11 µg/L | 2/4 | SYR4 | 2015–2019 |
| Barium | 3.6 µg/L 0.2% of the EPA limit 2000 µg/L | 1/4 | SYR4 | 2015–2019 |
| Carbofuran | 7 µg/L 18% of the EPA limit 40 µg/L | 1/2 | SYR4 | 2018–2019 |
| Chromium | 1 µg/L 1% of the EPA limit 100 µg/L | 1/4 | SYR4 | 2015–2019 |
64 contaminants tested, none detected
Utility contact
Frequently asked questions about North Trails Mutual Water Company
Is North Trails Mutual Water Company tap water safe to drink?
EPA monitoring detected 10 contaminants in North Trails Mutual Water Company'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 North Trails Mutual Water Company's water?
EPA monitoring detected Nitrate, Combined Uranium, Arsenic, Fluoride, Lead, and others. The full list with the level and data source for each is above.
How many people does North Trails Mutual Water Company serve?
North Trails Mutual Water Company reports serving 100 people in California, per its EPA record.
Has North Trails Mutual Water Company had any water quality violations?
The EPA has 28 violations on file for North Trails Mutual Water Company, of which 18 are health-based (a contaminant limit or required treatment was breached) and 2 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.