Water Quality in La Crosse, WI (54636)
EPA violation data for public water systems serving ZIP code 54636.
Active Health Violations
2 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 60% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
16,727
Population
22
Water Systems
7
Violations (5yr)
2
Health-Based
Location
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Water Systems Serving This Area (22)
La Crosse Waterworks
All resolvedOnalaska Waterworks
Holmen Waterworks
1 health-basedHeritage Hills
Green Oaks Mobile Home Court
Drugans Golf Club
Lost Pirate Tiki Bar And Grill The
Whispering Pines Campground
Pizza Corral
Drugans Supper Club
Haldemans Hilltop Tavern
Oak Point Tavern
Magnolia Sunset Event Venues
Oak Grove Family Learning Center
Tree Stand Tavern
Whispering Pines Campground - Shower House
Russ & Toms Gator Pit
Holmen Baptist Church
1 health-basedNew Amsterdam Presbyt Church
Black Oak Grill & Saloon
Lax Co Holmen County Park
Hillside Mobile Home Park
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Lead & Copper Levels
Lead (Pb)
Approaching limitSampled: Jun 2025
How Does This Compare?
La Crosse (54636) has more violations than 60% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 7.
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
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.