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 | 2011-10-01 → 2011-12-31 |
| MCL | Health-based | Resolved | 2011-10-01 → 2011-12-31 |
| MCL | Health-based | Resolved | 2011-10-01 → 2011-12-31 |
| MCL | Health-based | Resolved | 2011-10-01 → 2011-12-31 |
| MCL | Health-based | Resolved | 2011-07-01 → 2011-09-30 |
| MCL | Health-based | Resolved | 2011-07-01 → 2011-09-30 |
| MCL | Health-based | Resolved | 2011-07-01 → 2011-09-30 |
| MCL | Health-based | Resolved | 2011-07-01 → 2011-09-30 |
| MCL | Health-based | Resolved | 2011-06-01 → 2011-06-30 |
| MCL | Health-based | Resolved | 2011-06-01 → 2011-06-30 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Arsenic | 13.95 µg/L 140% of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 30 µg/L | 82/191 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 15/15 | LCR | 2025 |
| Barium | 286 µg/L 14% of the EPA limit 2000 µg/L
worst single sample: 290 µg/L | 3/3 | SYR4 | 2013–2019 |
| Copper | 365 µg/L 28% of the EPA limit 1300 µg/L
worst single sample: 400 µg/L | 3/15 | SYR4 | 2013–2019 |
| Fluoride | 218 µg/L 5.5% of the EPA limit 4000 µg/L
worst single sample: 220 µg/L | 3/3 | SYR4 | 2013–2019 |
| Combined Radium (-226 And -228) | 2.825 pCi/L 57% of the EPA limit 5 pCi/L
worst single sample: 2.9 pCi/L | 2/2 | SYR4 | 2013–2019 |
| Combined Uranium | 3.095 µg/L 10% of the EPA limit 30 µg/L
worst single sample: 3.1 µg/L | 2/2 | SYR4 | 2013–2019 |
| Gross Alpha, Excl. Radon And U | 4.05 pCi/L 27% of the EPA limit 15 pCi/L
worst single sample: 4.1 pCi/L | 2/2 | SYR4 | 2013–2019 |
| Lead | 1 µg/L 6.7% of the EPA limit 15 µg/L | 1/15 | SYR4 | 2013–2019 |
| Nitrate-Nitrite | 20 µg/L 0.2% of the EPA limit 10000 µg/L | 1/8 | SYR4 | 2012–2019 |
58 contaminants tested, none detected
Utility contact
Frequently asked questions about North Shore Estates Hoa
Is North Shore Estates Hoa tap water safe to drink?
EPA monitoring detected 10 contaminants in North Shore Estates Hoa'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 North Shore Estates Hoa's water?
EPA monitoring detected Arsenic, Lead, Barium, Copper, Fluoride, and others. The full list with the level and data source for each is above.
How many people does North Shore Estates Hoa serve?
North Shore Estates Hoa reports serving 65 people in Montana, per its EPA record.
Has North Shore Estates Hoa had any water quality violations?
The EPA has 124 violations on file for North Shore Estates Hoa, of which 82 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.