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 | 2007-10-01 → 2007-10-31 |
| MCL | Health-based | Resolved | 2007-10-01 → 2007-10-31 |
| MCL | Health-based | Resolved | 1993-04-01 → 1993-04-30 |
| MCL | Health-based | Resolved | 1993-04-01 → 1993-04-30 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 7800 µg/L 78% of the EPA limit 10000 µg/L | 58/126 | SYR4 | 2012–2019 |
| Bromodichloromethane | 27.8 µg/L No EPA limit set | 42/42 | SYR4 | 2012–2019 |
| Bromoform | 19.1 µg/L No EPA limit set | 42/42 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 8.4 µg/L No EPA limit set | 42/42 | SYR4 | 2012–2019 |
| Dibromochloromethane | 30.1 µg/L No EPA limit set | 42/42 | SYR4 | 2012–2019 |
| TTHM | 89.6 µg/L 112% of the EPA limit, in the worst sample — 80 µg/L | 42/42 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 101 µg/L 168% of the EPA limit, in the worst sample — 60 µg/L | 42/42 | SYR4 | 2012–2019 |
| Chloroform | 47.1 µg/L No EPA limit set | 41/42 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 86 µg/L No EPA limit set | 41/42 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 40/40 | LCR | 2023 |
| Trichloroacetic Acid | 11.7 µg/L No EPA limit set | 28/42 | SYR4 | 2012–2019 |
| Fluoride | 630 µg/L 16% of the EPA limit 4000 µg/L | 12/12 | SYR4 | 2014–2017 |
| Lithium | 67.9 µg/L No EPA limit set | 8/8 | UCMR-5 | 2024 |
| Monobromoacetic Acid | 1 µg/L No EPA limit set | 4/42 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 7300 µg/L 73% of the EPA limit 10000 µg/L | 2/8 | SYR4 | 2014–2017 |
| Toluene | 1.1 µg/L 0.1% of the EPA limit 1000 µg/L | 1/15 | SYR4 | 2014–2017 |
63 contaminants tested, none detected
Utility contact
Frequently asked questions about La Cumbre Mutual Water Co
Is La Cumbre Mutual Water Co tap water safe to drink?
EPA monitoring detected 16 contaminants in La Cumbre Mutual Water Co'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 La Cumbre Mutual Water Co's water?
EPA monitoring detected Nitrate, Bromodichloromethane, Bromoform, Dibromoacetic Acid, Dibromochloromethane, and others. The full list with the level and data source for each is above.
How many people does La Cumbre Mutual Water Co serve?
La Cumbre Mutual Water Co reports serving 4,861 people in California, per its EPA record.
Has La Cumbre Mutual Water Co had any water quality violations?
The EPA has 4 violations on file for La Cumbre Mutual Water Co, 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.