Big Sky County Water And Sewer Dist 363
PWSID MT0002385 · Big Sky, Montana · serves 4,132 people · groundwater source
B
Good
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFBS | 3.1 ppt | — | 9/23/2025 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2025-04-01 | Nitrate-Nitrite | MR | No | Resolved |