Is Shelby, Montana tap water safe?
5 water systems report serving Shelby. Your water depends on which one serves your address. Check your bill if unsure.
A
City of Shelby
Serves 3,970 people · Groundwater · Full report →
No health-based violations in the last 5 years; 1 monitoring/reporting violation; 1 not yet resolved; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
B
Ncmrwa North Shelby
Serves 300 people · Groundwater · Full report →
No health-based violations in the last 5 years; 5 monitoring/reporting violations; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2024).
A
Oilmont County Water District
Serves 300 people · Groundwater · Full report →
No health-based violations in the last 5 years; 3 monitoring/reporting violations; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2025).
B
Devon Water Inc
Serves 75 people · Groundwater · Full report →
No health-based violations in the last 5 years; 7 monitoring/reporting violations; 2 not yet resolved; No UCMR 5 PFAS results on file; Latest lead 90th percentile on file is from 2016 (older than 5 years, not graded).
A
Ethridge County Water District
Serves 70 people · Groundwater · Full report →
No health-based violations in the last 5 years; 3 monitoring/reporting violations; 1 not yet resolved; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2024).