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 |
|---|---|---|---|
| MR | Monitoring | Resolved | 2020-01-01 → 2020-03-06 |
| MR | Monitoring | Resolved | 2020-01-01 → 2020-03-06 |
PFAS detected
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| Pfba | 0.0053 µg/L | 1/16 | 2025 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 10353.1 µg/L 104% of the EPA limit, at the 95th percentile of samples — 10000 µg/L
worst single sample: 16600 µg/L | 4372/4410 | SYR4 | 2012–2019 |
| Trichloroethylene | 2.8 µg/L 56% of the EPA limit 5 µg/L
worst single sample: 6.1 µg/L | 1222/1663 | SYR4 | 2012–2019 |
| Tetrachloroethylene | 6.5 µg/L 130% of the EPA limit, at the 95th percentile of samples — 5 µg/L
worst single sample: 17 µg/L | 1179/1685 | SYR4 | 2012–2019 |
| Dibromochloromethane | 11.46 µg/L No EPA limit set
worst single sample: 17.2 µg/L | 285/810 | SYR4 | 2012–2019 |
| Bromodichloromethane | 12.645 µg/L No EPA limit set
worst single sample: 17.1 µg/L | 232/795 | SYR4 | 2012–2019 |
| Carbon Tetrachloride | 0.8000 µg/L 16% of the EPA limit 5 µg/L
worst single sample: 1.1 µg/L | 232/1605 | SYR4 | 2012–2019 |
| Bromoform | 4.89 µg/L No EPA limit set
worst single sample: 8.2 µg/L | 203/832 | SYR4 | 2012–2019 |
| Chloroform | 12.88 µg/L No EPA limit set
worst single sample: 15.9 µg/L | 193/772 | SYR4 | 2012–2019 |
| TTHM | 24.6 µg/L 31% of the EPA limit 80 µg/L
worst single sample: 43 µg/L | 125/139 | SYR4 | 2012–2019 |
| Fluoride | 990 µg/L 25% of the EPA limit 4000 µg/L
worst single sample: 1080 µg/L | 123/123 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 20 µg/L 33% of the EPA limit 60 µg/L
worst single sample: 29 µg/L | 59/124 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 9.95 µg/L No EPA limit set
worst single sample: 12 µg/L | 51/124 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 4.41 µg/L No EPA limit set
worst single sample: 4.8 µg/L | 50/124 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 15000 µg/L 150% of the EPA limit, at the 95th percentile of samples — 10000 µg/L
worst single sample: 16000 µg/L | 38/38 | SYR4 | 2016–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 37/37 | LCR | 2023 |
| Trichloroacetic Acid | 9.855 µg/L No EPA limit set
worst single sample: 13 µg/L | 32/124 | SYR4 | 2012–2019 |
| Combined Uranium | 14.2444 µg/L 47% of the EPA limit 30 µg/L
worst single sample: 23.84 µg/L | 25/25 | SYR4 | 2013–2019 |
| Chromium | 18.4 µg/L 18% of the EPA limit 100 µg/L
worst single sample: 44 µg/L | 23/135 | SYR4 | 2012–2019 |
| Arsenic | 2.9 µg/L 29% of the EPA limit 10 µg/L | 15/123 | SYR4 | 2012–2019 |
| cis-1,2-Dichloroethylene | 1.04 µg/L 1.5% of the EPA limit 70 µg/L
worst single sample: 1.1 µg/L | 5/1604 | SYR4 | 2012–2019 |
| Lithium | 91.9 µg/L No EPA limit set | 4/16 | UCMR-5 | 2025 |
| 1,2-Dichloropropane | 2.77 µg/L 55% of the EPA limit 5 µg/L
worst single sample: 2.9 µg/L | 3/1618 | SYR4 | 2012–2019 |
| Copper | 153.3 µg/L 12% of the EPA limit 1300 µg/L
worst single sample: 160 µg/L | 2/97 | SYR4 | 2012–2019 |
| Mercury | 2.01 µg/L 100% of the EPA limit, at the 95th percentile of samples — 2 µg/L
worst single sample: 2.1 µg/L | 2/120 | SYR4 | 2012–2019 |
| Lead | 1 µg/L 6.7% of the EPA limit 15 µg/L | 1/97 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 3 µg/L No EPA limit set | 1/124 | SYR4 | 2012–2019 |
85 contaminants tested, none detected
Utility contact
Frequently asked questions about Cal/Am Water Company - San Marino
Is Cal/Am Water Company - San Marino tap water safe to drink?
EPA monitoring detected 27 contaminants in Cal/Am Water Company - San Marino'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 Cal/Am Water Company - San Marino's water?
EPA monitoring detected Nitrate, Trichloroethylene, Tetrachloroethylene, Dibromochloromethane, Bromodichloromethane, and others. The full list with the level and data source for each is above.
How many people does Cal/Am Water Company - San Marino serve?
Cal/Am Water Company - San Marino reports serving 47,995 people in California, per its EPA record.
Has Cal/Am Water Company - San Marino had any water quality violations?
The EPA has 2 violations on file for Cal/Am Water Company - San Marino, of which 0 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.