Is Grass Range, Montana tap water safe?
2 water systems report serving Grass Range. Your water depends on which one serves your address. Check your bill if unsure.
B
Town of Grass Range
Serves 102 people · Groundwater · Full report →
No health-based violations in the last 5 years; 5 monitoring/reporting violations; No UCMR 5 PFAS results on file; Latest lead 90th percentile on file is from 2017 (older than 5 years, not graded).
A
Ayers Hutterite Colony
Serves 58 people · Groundwater · Full report →
No health-based violations in the last 5 years; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2025).