Is Hardin, Montana tap water safe?
3 water systems report serving Hardin. Your water depends on which one serves your address. Check your bill if unsure.
A
City of Hardin
Serves 3,500 people · Surface water · Full report →
No health-based violations in the last 5 years; 2 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
A
Yellowtail Dam Gc System
Serves 125 people · Groundwater · Full report →
No health-based violations in the last 5 years; 2 monitoring/reporting violations; No UCMR 5 PFAS results on file; Lead 90th percentile above the new 10 ppb action level (LCRI, effective Nov 1, 2027); Lead 90th percentile below the action level (2024).
B
Wegner Water Service Hauler
Serves 50 people · Surface water · Full report →
No health-based violations in the last 5 years; 13 monitoring/reporting violations; 8 not yet resolved; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2021).