Water Quality in Great Falls, MT (59412)
EPA violation data for public water systems serving ZIP code 59412.
No Health-Based Violations
None of the 9 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are6 monitoring/reporting violations (missed testing deadlines), all resolved.
Better than 57% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
1,685
Population
9
Water Systems
6
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (9)
Great Falls City Of
Belt Town Of
All resolvedPleasant Valley Colony
All resolvedJohnny'S Bar & Cafe
Armington Trailer Court
Belt Community Church Unapproved
All resolvedCabin Saloon Monarch
Armington School District No10
Fort Ponderosa
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
Annual water quality report delivery requirement.
Lead & Copper Levels
Lead (Pb)
Approaching limitSampled: Jul 2025
How Does This Compare?
Great Falls (59412) has more violations than 57% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 6, 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.