Water Quality in Great Falls, MT (59487)
EPA violation data for public water systems serving ZIP code 59487.
No Health-Based Violations
None of the 7 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are2 monitoring/reporting violations (missed testing deadlines), all resolved.
Better than 36% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
1,548
Population
7
Water Systems
2
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (7)
Great Falls City Of
Vaughn Cascade County Water And Sewer
All resolvedU.S. Forest Service
C & W Meats
Braden Tracts Unapproved
Great Falls Trap Club
Canteen Water Service
Contaminants Found
Annual water quality report delivery requirement.
Lead & Copper Levels
Lead (Pb)
Approaching limitSampled: Jul 2025
How Does This Compare?
Great Falls (59487) has more violations than 36% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 2, 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.