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 | 2006-07-01 → 2006-07-31 |
| MCL | Health-based | Resolved | 2006-07-01 → 2006-07-31 |
| MCL | Health-based | Resolved | 2006-07-01 → 2006-07-31 |
| MR | Monitoring | Resolved | 2022-10-01 |
| MR | Monitoring | Resolved | 2022-10-01 |
| MR | Monitoring | Resolved | 2013-10-01 |
| MR | Monitoring | Resolved | 2013-10-01 |
| MR | Monitoring | Resolved | 2006-09-01 → 2006-09-30 |
| MR | Monitoring | Resolved | 2006-09-01 → 2006-09-30 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Bromodichloromethane | 118.175 µg/L No EPA limit set
worst single sample: 121.2 µg/L | 6/9 | SYR4 | 2015–2019 |
| Bromoform | 50.2525 µg/L No EPA limit set
worst single sample: 61.37 µg/L | 6/8 | SYR4 | 2017–2019 |
| Dibromochloromethane | 35.825 µg/L No EPA limit set
worst single sample: 38.65 µg/L | 6/9 | SYR4 | 2015–2019 |
| TTHM | 310.155 µg/L 388% of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 314.29 µg/L | 6/8 | SYR4 | 2017–2019 |
| Total Haloacetic Acids (HAA5) | 174.05 µg/L 290% of the EPA limit, at the 95th percentile of samples — 60 µg/L
worst single sample: 194.9 µg/L | 6/8 | SYR4 | 2017–2019 |
| Chloroform | 164.16 µg/L No EPA limit set
worst single sample: 173.1 µg/L | 5/9 | SYR4 | 2015–2019 |
| Dibromoacetic Acid | 22.48 µg/L No EPA limit set
worst single sample: 24 µg/L | 5/8 | SYR4 | 2017–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 4/4 | LCR | 2023 |
| Trichloroacetic Acid | 7.015 µg/L No EPA limit set
worst single sample: 7.6 µg/L | 4/9 | SYR4 | 2015–2019 |
| Dichloroacetic Acid | 111.14 µg/L No EPA limit set
worst single sample: 114.6 µg/L | 3/9 | SYR4 | 2015–2019 |
| Monobromoacetic Acid | 3.77 µg/L No EPA limit set
worst single sample: 3.8 µg/L | 3/9 | SYR4 | 2015–2019 |
| Fluoride | 395 µg/L 9.9% of the EPA limit 4000 µg/L
worst single sample: 400 µg/L | 2/2 | SYR4 | 2014–2016 |
| Monochloroacetic Acid | 53 µg/L No EPA limit set | 1/9 | SYR4 | 2015–2019 |
37 contaminants tested, none detected
Utility contact
Frequently asked questions about Ione Band of Miwok Indians
Is Ione Band of Miwok Indians tap water safe to drink?
EPA monitoring detected 13 contaminants in Ione Band of Miwok Indians'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 Ione Band of Miwok Indians's water?
EPA monitoring detected Bromodichloromethane, Bromoform, Dibromochloromethane, TTHM, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.
How many people does Ione Band of Miwok Indians serve?
Ione Band of Miwok Indians reports serving 40 people in California, per its EPA record.
Has Ione Band of Miwok Indians had any water quality violations?
The EPA has 9 violations on file for Ione Band of Miwok Indians, of which 3 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.