Water Quality in Great Falls, MT (59404)
EPA violation data for public water systems serving ZIP code 59404.
Active Health Violations
3 health-based violations found in the past 5 years, with at least one still unresolved. Contaminant levels have exceeded federal safety limits. Consider testing your tap water independently.
More violations than 97% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
28,822
Population
30
Water Systems
113
Violations (5yr)
3
Health-Based
Location
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Water Systems Serving This Area (30)
Great Falls City Of
Sun Prairie Village County
All resolvedPrairie Water Company
Culligan Water Conditioning Great Falls
All resolvedGore Hill County Water Dist
All resolvedHomestead Acres County Water And Sewer
1 health-basedSun Prairie Water District
All resolvedMt Air Natl Guard 120th Air Lift Wing
Valley Community Bible Church
Great Falls Rv Park
Sangster Water Hauling Llc
All resolvedYellowstone Truck Stop
Cattlemens Cut Supper Club
Buffalo Bobs
Big Bend Ranch Subdivision
1 health-basedTri Hil Wua Gore Hill
Emerald Green Golf Club
Spring Tree Ridge
Western Livestock Auction Llc
All resolvedBootlegger Espresso
Back Roads Bar And Grill
1 health-basedMidway Bar
Park Garden Estates
Windy Acres Wua
All resolvedEvergreen Motel
Rainbow Dam - Mt Power
Morony Dam Mt Power
Big Belt C Store And Casino
All resolvedHigh Plains H2o Llc
Terrace Trailer Park
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
Annual water quality report delivery requirement.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
A naturally occurring element that can cause cancer and other health effects at high levels.
Lead & Copper Levels
Lead (Pb)
Approaching limitSampled: Jul 2025
How Does This Compare?
Great Falls (59404) has more violations than 97% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 113.
Recommended Water Filters
Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.
UV Water Purifier
Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.
Targets:E. coli, Coliform, Giardia, Cryptosporidium
Look for:NSF/ANSI 55 (Class A) certified
Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.