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 | 1995-01-01 → 1995-01-31 |
| MCL | Health-based | Resolved | 1995-01-01 → 1995-01-31 |
| MON | Monitoring | Resolved | 2023-07-01 → 2023-07-31 |
| MON | Monitoring | Resolved | 2023-07-01 → 2023-07-31 |
| MON | Monitoring | Resolved | 2023-06-01 → 2023-06-30 |
| MON | Monitoring | Resolved | 2023-06-01 → 2023-06-30 |
| MON | Monitoring | Resolved | 2021-08-01 → 2021-08-31 |
| MON | Monitoring | Resolved | 2021-08-01 → 2021-08-31 |
| MON | Monitoring | Resolved | 2019-07-01 → 2019-07-31 |
| MON | Monitoring | Resolved | 2019-07-01 → 2019-07-31 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Lead | 0.0060 mg/L 40% of the EPA limit 0.0150 mg/L | 17/17 | LCR | 2025 |
| Bromodichloromethane | 11.672 µg/L No EPA limit set
worst single sample: 12.33 µg/L | 5/5 | SYR4 | 2012–2019 |
| Dibromochloromethane | 6.616 µg/L No EPA limit set
worst single sample: 6.86 µg/L | 5/5 | SYR4 | 2012–2019 |
| TTHM | 70.964 µg/L 89% of the EPA limit 80 µg/L
worst single sample: 71.38 µg/L | 5/5 | SYR4 | 2012–2019 |
| Chloroform | 59.027 µg/L No EPA limit set
worst single sample: 61.16 µg/L | 4/5 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 19.195 µg/L No EPA limit set
worst single sample: 20.5 µg/L | 4/5 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 43.14 µg/L 72% of the EPA limit 60 µg/L
worst single sample: 45.6 µg/L | 4/5 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 24.935 µg/L No EPA limit set
worst single sample: 25.1 µg/L | 4/5 | SYR4 | 2012–2019 |
| Bromoform | 3.265 µg/L No EPA limit set
worst single sample: 3.27 µg/L | 2/5 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 1.2 µg/L No EPA limit set | 1/5 | SYR4 | 2012–2019 |
2 contaminants tested, none detected
Utility contact
Frequently asked questions about Mireval Improvement Association
Is Mireval Improvement Association tap water safe to drink?
EPA monitoring detected 10 contaminants in Mireval Improvement Association'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 Mireval Improvement Association's water?
EPA monitoring detected Lead, Bromodichloromethane, Dibromochloromethane, TTHM, Chloroform, and others. The full list with the level and data source for each is above.
How many people does Mireval Improvement Association serve?
Mireval Improvement Association reports serving 60 people in California, per its EPA record.
Has Mireval Improvement Association had any water quality violations?
The EPA has 29 violations on file for Mireval Improvement Association, of which 2 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.