Water Quality in Shelby, MT (59474)
EPA violation data for public water systems serving ZIP code 59474.
No Health-Based Violations
None of the 6 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are16 monitoring/reporting violations (missed testing deadlines), all resolved.
Better than 75% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
3,525
Population
6
Water Systems
16
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (6)
Shelby City Of
Marias Valley Golf And Country Club
All resolvedBig Rose Colony
Devon Water Inc
Cut Bank Iga
Lewis And Clark Rv Park
Contaminants Found
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Missed testing deadlines — not a detection of bacteria.
Annual water quality report delivery requirement.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2025
How Does This Compare?
Shelby (59474) has more violations than 75% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 16, most of which are monitoring/reporting issues.
Water Filter Recommendations
No contaminant issues detected. For general protection, a basic carbon filter removes common impurities like chlorine and sediment. Look for NSF/ANSI 42 certified products.