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 | Resolved | 2021-10-01 → 2021-12-31 |
| MCL | Health-based | Resolved | 2021-10-01 → 2021-12-31 |
| MCL | Health-based | Resolved | 2017-04-01 → 2017-06-30 |
| MCL | Health-based | Resolved | 2017-04-01 → 2017-06-30 |
| MCL | Health-based | Resolved | 1994-07-01 → 1994-07-31 |
| MCL | Health-based | Resolved | 1994-07-01 → 1994-07-31 |
| TT | Health-based | Resolved | 1993-07-01 → 1993-07-31 |
| RPT | Monitoring | Unaddressed | 2025-07-02 |
| MON | Monitoring | Resolved | 2017-08-01 → 2017-08-31 |
| MON | Monitoring | Resolved | 2017-08-01 → 2017-08-31 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Bromodichloromethane | 4.57 µg/L No EPA limit set
worst single sample: 4.9 µg/L | 47/47 | SYR4 | 2013–2019 |
| Chloroform | 85.295 µg/L No EPA limit set
worst single sample: 90 µg/L | 47/47 | SYR4 | 2013–2019 |
| TTHM | 88.4 µg/L 111% of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 92 µg/L | 47/49 | SYR4 | 2013–2019 |
| Total Haloacetic Acids (HAA5) | 59.1 µg/L 99% of the EPA limit 60 µg/L
worst single sample: 66 µg/L | 47/47 | SYR4 | 2013–2019 |
| Trichloroacetic Acid | 41.4 µg/L No EPA limit set
worst single sample: 47 µg/L | 47/47 | SYR4 | 2013–2019 |
| Dichloroacetic Acid | 21.25 µg/L No EPA limit set
worst single sample: 25 µg/L | 46/47 | SYR4 | 2013–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 15/15 | LCR | 2025 |
| Monochloroacetic Acid | 4.23 µg/L No EPA limit set
worst single sample: 4.5 µg/L | 4/47 | SYR4 | 2013–2019 |
6 contaminants tested, none detected
Utility contact
Frequently asked questions about Plymouth, City of
Is Plymouth, City of tap water safe to drink?
EPA monitoring detected 8 contaminants in Plymouth, City of'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 Plymouth, City of's water?
EPA monitoring detected Bromodichloromethane, Chloroform, TTHM, Total Haloacetic Acids (HAA5), Trichloroacetic Acid, and others. The full list with the level and data source for each is above.
How many people does Plymouth, City of serve?
Plymouth, City of reports serving 1,060 people in California, per its EPA record.
Has Plymouth, City of had any water quality violations?
The EPA has 48 violations on file for Plymouth, City of, of which 7 are health-based (a contaminant limit or required treatment was breached) and 1 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.