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 |
|---|---|---|---|
| MR | Monitoring | Resolved | 2008-04-01 → 2008-06-30 |
| MR | Monitoring | Resolved | 2008-04-01 → 2008-06-30 |
| MR | Monitoring | Resolved | 2008-04-01 → 2008-06-30 |
| MR | Monitoring | Resolved | 2008-04-01 → 2008-06-30 |
| MR | Monitoring | Resolved | 2008-04-01 → 2008-06-30 |
| MR | Monitoring | Resolved | 2008-04-01 → 2008-06-30 |
| MR | Monitoring | Resolved | 2008-04-01 → 2008-06-30 |
| MR | Monitoring | Resolved | 2008-04-01 → 2008-06-30 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Copper | 101.06 µg/L 7.8% of the EPA limit 1300 µg/L
worst single sample: 134 µg/L | 10/10 | SYR4 | 2014–2017 |
| Lead | 1.308 µg/L 8.7% of the EPA limit 15 µg/L
worst single sample: 1.4 µg/L | 5/10 | SYR4 | 2014–2017 |
| Cyanide | 326.5 µg/L 163% of the EPA limit, at the 95th percentile of samples — 200 µg/L
worst single sample: 370 µg/L | 4/10 | SYR4 | 2014–2017 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 4/4 | LCR | 2025 |
| Gross Alpha, Excl. Radon And U | 5.06 pCi/L 34% of the EPA limit 15 pCi/L
worst single sample: 5.2 pCi/L | 3/3 | SYR4 | 2012–2017 |
| Arsenic | 1.94 µg/L 19% of the EPA limit 10 µg/L | 1/1 | SYR4 | 2014 |
| Barium | 232 µg/L 12% of the EPA limit 2000 µg/L | 1/1 | SYR4 | 2014 |
| Fluoride | 370 µg/L 9.3% of the EPA limit 4000 µg/L | 1/1 | SYR4 | 2014 |
54 contaminants tested, none detected
Utility contact
Frequently asked questions about Stony Bar Estates
Is Stony Bar Estates tap water safe to drink?
EPA monitoring detected 8 contaminants in Stony Bar Estates'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 Stony Bar Estates's water?
EPA monitoring detected Copper, Lead, Cyanide, Lead, Gross Alpha, Excl. Radon And U, and others. The full list with the level and data source for each is above.
How many people does Stony Bar Estates serve?
Stony Bar Estates reports serving 40 people in Minnesota, per its EPA record.
Has Stony Bar Estates had any water quality violations?
The EPA has 8 violations on file for Stony Bar Estates, of which 0 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.