BIG SKY COUNTY WATER AND SEWER DIST 363
PWSID: MT0002385 · BIG SKY, MT · Serving 4,132 people
Type: CWSOwner: LSource: GW
Settlement eligible
Settlement details
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All PFAS compounds below EPA Maximum Contaminant Levels.
Key contaminants vs MCL
EPA MCL: 4 ppt (parts per trillion) for PFOA and PFOS individually. Compliance deadline: 2031-12-31
Exact contamination levels
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Upgrade to ProDetection summary
3.1 ppt
Highest single detection
2025-09-23
Latest sample date
All PFAS detection results
Source: EPA UCMR5 (UCMR5) · 116 compounds tested
| Contaminant | Result (ppt) | MCL (ppt) | Status | Sample date |
|---|
| NFDHA | ND | — | Below MRL | 2025-09-23 |
| PFDoA | ND | — | Below MRL | 2025-03-18 |
| PFHxA | ND | — | Below MRL | 2025-03-18 |
| PFHpA | ND | — | Below MRL | 2025-03-18 |
| PFOS | ND | 4 | Below MRL | 2025-03-18 |