BIG SKY COUNTY WATER AND SEWER DIST 363
BIG SKY, MT
PFAS detected in your water, but all levels are below 50% of federal limits.
- Population served
- 4.1K
- Source type
- GW
- Compounds detected
- 29
- Above federal limits
- 0
PWSID: MT0002385 · Source: EPA UCMR 5
Every compound tested
All 29 PFAS compounds in the EPA UCMR 5 program. Detected results are shown first.
This compound is monitored under UCMR 5 but has no enforceable EPA drinking water limit yet.
This compound is monitored under UCMR 5 but has no enforceable EPA drinking water limit yet.
This compound is monitored under UCMR 5 but has no enforceable EPA drinking water limit yet.
This compound is monitored under UCMR 5 but has no enforceable EPA drinking water limit yet.
This compound is monitored under UCMR 5 but has no enforceable EPA drinking water limit yet.
This compound is monitored under UCMR 5 but has no enforceable EPA drinking water limit yet.
This compound is monitored under UCMR 5 but has no enforceable EPA drinking water limit yet.
This compound is monitored under UCMR 5 but has no enforceable EPA drinking water limit yet.
This compound is monitored under UCMR 5 but has no enforceable EPA drinking water limit yet.
This compound is monitored under UCMR 5 but has no enforceable EPA drinking water limit yet.
This compound is monitored under UCMR 5 but has no enforceable EPA drinking water limit yet.
This compound is monitored under UCMR 5 but has no enforceable EPA drinking water limit yet.
This compound is monitored under UCMR 5 but has no enforceable EPA drinking water limit yet.
This compound is monitored under UCMR 5 but has no enforceable EPA drinking water limit yet.
This compound is monitored under UCMR 5 but has no enforceable EPA drinking water limit yet.
This compound is monitored under UCMR 5 but has no enforceable EPA drinking water limit yet.
This compound is monitored under UCMR 5 but has no enforceable EPA drinking water limit yet.
This compound is monitored under UCMR 5 but has no enforceable EPA drinking water limit yet.
This compound is monitored under UCMR 5 but has no enforceable EPA drinking water limit yet.
This compound is monitored under UCMR 5 but has no enforceable EPA drinking water limit yet.
This compound is monitored under UCMR 5 but has no enforceable EPA drinking water limit yet.
This compound is monitored under UCMR 5 but has no enforceable EPA drinking water limit yet.
This compound is monitored under UCMR 5 but has no enforceable EPA drinking water limit yet.
This compound is monitored under UCMR 5 but has no enforceable EPA drinking water limit yet.
How this grade was calculated
This system received a grade of B because PFAS were detected (worst compound: PFBS) but all detected levels remain below 50% of the EPA Maximum Contaminant Level.
| Grade | Criteria |
|---|---|
| A | No PFAS detected above the Minimum Reporting Level |
| B | PFAS detected, all below 50% of the EPA MCL |
| C | Worst compound between 50% and 100% of EPA MCL |
| D | At least one compound exceeds the EPA MCL (up to 5×) |
| F | At least one compound exceeds 5× the EPA MCL |
What BIG SKY COUNTY WATER AND SEWER DIST 363 customers can do
PFAS were detected in BIG SKY COUNTY WATER AND SEWER DIST 363's water but levels are well below federal limits. Steps to maintain awareness:
- Read your utility's annual Consumer Confidence Report (CCR), and request a copy if you don't receive one.
- Sign up for water quality alerts from your utility.
- If you're on a private well, get it independently tested for PFAS.
- Reduce PFAS exposure from non-water sources: avoid non-stick cookware, stain-resistant fabrics, and grease-resistant food packaging.
Want the statewide picture? See all PFAS results in Montana →
Where this data comes from
- EPA Unregulated Contaminant Monitoring Rule, 5th cycle (UCMR 5)
- Testing period: 2023–2026
- EPA MCLs finalized April 2024
- Methodology
- View raw EPA UCMR data
This data reflects EPA testing. Your water utility may have more recent results. Contact them directly for the most current information.