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 | 2013-09-01 → 2013-09-30 |
| MCL | Health-based | Resolved | 2013-09-01 → 2013-09-30 |
| MCL | Health-based | Resolved | 2013-09-01 → 2013-09-30 |
| MCL | Health-based | Resolved | 1998-09-01 → 1998-09-30 |
| MCL | Health-based | Resolved | 1998-09-01 → 1998-09-30 |
| MCL | Health-based | Resolved | 1998-09-01 → 1998-09-30 |
| MCL | Health-based | Resolved | 1996-06-01 → 1996-06-30 |
| MCL | Health-based | Resolved | 1996-06-01 → 1996-06-30 |
| MCL | Health-based | Resolved | 1996-06-01 → 1996-06-30 |
| MCL | Health-based | Resolved | 1996-06-01 → 1996-06-30 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Copper | 320 µg/L 25% of the EPA limit 1300 µg/L | 15/15 | SYR4 | 2013–2019 |
| Lead | 0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L | 14/14 | LCR | 2025 |
| Lead | 8 µg/L 53% of the EPA limit 15 µg/L | 13/15 | SYR4 | 2013–2019 |
| Nitrate | 548 µg/L 5.5% of the EPA limit 10000 µg/L | 6/6 | SYR4 | 2017–2019 |
| Arsenic | 6 µg/L 60% of the EPA limit 10 µg/L | 1/1 | SYR4 | 2018 |
| Barium | 180 µg/L 9% of the EPA limit 2000 µg/L | 1/1 | SYR4 | 2018 |
| Fluoride | 400 µg/L 10% of the EPA limit 4000 µg/L | 1/1 | SYR4 | 2018 |
| Gross Alpha, Excl. Radon And U | 0.9000 pCi/L 6% of the EPA limit 15 pCi/L | 1/1 | SYR4 | 2013 |
11 contaminants tested, none detected
Utility contact
Frequently asked questions about Pine Grove
Is Pine Grove tap water safe to drink?
EPA monitoring detected 8 contaminants in Pine Grove'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 Pine Grove's water?
EPA monitoring detected Copper, Lead, Lead, Nitrate, Arsenic, and others. The full list with the level and data source for each is above.
How many people does Pine Grove serve?
Pine Grove reports serving 425 people in South Dakota, per its EPA record.
Has Pine Grove had any water quality violations?
The EPA has 29 violations on file for Pine Grove, of which 11 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.