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 | Unaddressed | 2026-04-01 → 2026-06-30 |
| MCL | Health-based | Unaddressed | 2026-04-01 → 2026-06-30 |
| MCL | Health-based | Resolved | 2025-01-01 → 2025-03-31 |
| MCL | Health-based | Resolved | 2025-01-01 → 2025-03-31 |
| MCL | Health-based | Resolved | 2025-01-01 → 2025-03-31 |
| MCL | Health-based | Resolved | 2025-01-01 → 2025-03-31 |
| MCL | Health-based | Resolved | 2024-10-01 → 2024-12-31 |
| MCL | Health-based | Resolved | 2024-10-01 → 2024-12-31 |
| MCL | Health-based | Resolved | 2024-10-01 → 2024-12-31 |
| TT | Health-based | Resolved | 2009-06-01 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Copper | 877 µg/L 67% of the EPA limit 1300 µg/L
worst single sample: 900 µg/L | 24/25 | SYR4 | 2012–2018 |
| Bromodichloromethane | 11.2 µg/L No EPA limit set
worst single sample: 13 µg/L | 19/19 | SYR4 | 2012–2019 |
| Chloroform | 77.5 µg/L No EPA limit set
worst single sample: 82 µg/L | 19/19 | SYR4 | 2012–2019 |
| Dibromochloromethane | 2.31 µg/L No EPA limit set
worst single sample: 2.4 µg/L | 19/19 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 34.1 µg/L No EPA limit set
worst single sample: 35 µg/L | 19/19 | SYR4 | 2012–2019 |
| TTHM | 85.8 µg/L 107% of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 93 µg/L | 19/19 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 79.4 µg/L 132% of the EPA limit, at the 95th percentile of samples — 60 µg/L
worst single sample: 83 µg/L | 19/19 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 44.5 µg/L No EPA limit set
worst single sample: 67 µg/L | 19/19 | SYR4 | 2012–2019 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L | 13/13 | LCR | 2024 |
| Lead | 6.6 µg/L 44% of the EPA limit 15 µg/L
worst single sample: 7 µg/L | 3/25 | SYR4 | 2012–2018 |
| Monochloroacetic Acid | 10.46 µg/L No EPA limit set
worst single sample: 11 µg/L | 3/19 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 0.5080 µg/L No EPA limit set
worst single sample: 0.5200 µg/L | 2/19 | SYR4 | 2012–2019 |
2 contaminants tested, none detected
Utility contact
Frequently asked questions about South Chester Water Dist
Is South Chester Water Dist tap water safe to drink?
EPA monitoring detected 12 contaminants in South Chester Water Dist'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 South Chester Water Dist's water?
EPA monitoring detected Copper, Bromodichloromethane, Chloroform, Dibromochloromethane, Dichloroacetic Acid, and others. The full list with the level and data source for each is above.
How many people does South Chester Water Dist serve?
South Chester Water Dist reports serving 55 people in Montana, per its EPA record.
Has South Chester Water Dist had any water quality violations?
The EPA has 190 violations on file for South Chester Water Dist, of which 14 are health-based (a contaminant limit or required treatment was breached) and 2 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.