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 | 2006-01-01 → 2006-03-31 |
| MCL | Health-based | Resolved | 2006-01-01 → 2006-03-31 |
| TT | Health-based | Resolved | 1993-06-01 → 1993-06-30 |
| TT | Health-based | Resolved | 1993-06-01 → 1993-06-30 |
| MR | Monitoring | Resolved | 1996-01-01 |
| MR | Monitoring | Resolved | 1996-01-01 |
PFAS detected
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| Pfba | 0.0075 µg/L | 1/9 | 2025 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Combined Uranium | 339.422 µg/L 1131% of the EPA limit, at the 95th percentile of samples — 30 µg/L
worst single sample: 489.167 µg/L | 159/225 | SYR4 | 2012–2019 |
| Barium | 13.5 µg/L 0.7% of the EPA limit 2000 µg/L
worst single sample: 14 µg/L | 31/31 | SYR4 | 2012–2019 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L | 31/31 | LCR | 2025 |
| Arsenic | 6.45 µg/L 65% of the EPA limit 10 µg/L
worst single sample: 6.5 µg/L | 11/31 | SYR4 | 2012–2019 |
| Chloroform | 34 µg/L No EPA limit set
worst single sample: 38 µg/L | 9/10 | SYR4 | 2014–2019 |
| Chromium | 1.265 µg/L 1.3% of the EPA limit 100 µg/L
worst single sample: 1.3 µg/L | 8/31 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 13.3 µg/L No EPA limit set
worst single sample: 14 µg/L | 8/8 | SYR4 | 2014–2019 |
| TTHM | 36.8 µg/L 46% of the EPA limit 80 µg/L
worst single sample: 41 µg/L | 8/10 | SYR4 | 2014–2019 |
| Total Haloacetic Acids (HAA5) | 31 µg/L 52% of the EPA limit 60 µg/L | 8/8 | SYR4 | 2014–2019 |
| Trichloroacetic Acid | 19.3 µg/L No EPA limit set
worst single sample: 20 µg/L | 8/8 | SYR4 | 2014–2019 |
| Fluoride | 347 µg/L 8.7% of the EPA limit 4000 µg/L
worst single sample: 350 µg/L | 7/31 | SYR4 | 2012–2019 |
| Bromodichloromethane | 2.975 µg/L No EPA limit set
worst single sample: 3.3 µg/L | 6/10 | SYR4 | 2014–2019 |
| Lithium | 51.2 µg/L No EPA limit set | 6/9 | UCMR-5 | 2025 |
| Combined Radium (-226 And -228) | 4.736 pCi/L 95% of the EPA limit 5 pCi/L
worst single sample: 5.1 pCi/L | 5/5 | SYR4 | 2015 |
| Copper | 32.6 µg/L 2.5% of the EPA limit 1300 µg/L
worst single sample: 35 µg/L | 4/31 | SYR4 | 2012–2019 |
| Lead | 3.27 µg/L 22% of the EPA limit 15 µg/L
worst single sample: 3.5 µg/L | 3/31 | SYR4 | 2012–2019 |
| Cyanide | 31 µg/L 16% of the EPA limit 200 µg/L | 1/31 | SYR4 | 2012–2019 |
| Monobromoacetic Acid | 1.1 µg/L No EPA limit set | 1/8 | SYR4 | 2014–2019 |
65 contaminants tested, none detected
Utility contact
Frequently asked questions about Cal Am - Bass Lake
Is Cal Am - Bass Lake tap water safe to drink?
EPA monitoring detected 19 contaminants in Cal Am - Bass Lake'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 - Bass Lake's water?
EPA monitoring detected Combined Uranium, Barium, Lead, Arsenic, Chloroform, and others. The full list with the level and data source for each is above.
How many people does Cal Am - Bass Lake serve?
Cal Am - Bass Lake reports serving 4,527 people in California, per its EPA record.
Has Cal Am - Bass Lake had any water quality violations?
The EPA has 6 violations on file for Cal Am - Bass Lake, of which 4 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.