Water Quality in La Crosse, WI (54644)
EPA violation data for public water systems serving ZIP code 54644.
Active Health Violations
5 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 67% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
1,236
Population
9
Water Systems
10
Violations (5yr)
5
Health-Based
Location
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Water Systems Serving This Area (9)
La Crosse Waterworks
All resolvedOnalaska Waterworks
Town Of Farmington Sanitary District
1 health-basedMuddy Creek
American Legion Post 507
Christ Evangelical Lutheran Church
All resolvedLewis Valley Lutheran Church
Ruthies
Rumors Bar & Grill
4 health-basedContaminants Found
At high levels, nitrate can cause blue baby syndrome in infants.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Missed testing deadlines — not a detection of bacteria.
Lead & Copper Levels
Lead (Pb)
Approaching limitSampled: Jun 2025
How Does This Compare?
La Crosse (54644) has more violations than 67% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 10.
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.
Reverse Osmosis System
Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.
Targets:Lead, Copper, Arsenic, Mercury, Cadmium
Look for:NSF/ANSI 58 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.