Water Quality in Janesville, WI (53538)
EPA violation data for public water systems serving ZIP code 53538.
Active Health Violations
1 health-based violation 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 70% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
18,813
Population
48
Water Systems
12
Violations (5yr)
1
Health-Based
Location
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Water Systems Serving This Area (48)
Janesville Water Utility
Beloit City Of
All resolvedWatertown Waterworks
All resolvedFort Atkinson Waterworks
Faith Community Church/School
Silo Ridge Clubhouse
Wishing Well Rv Resort Lodge Well System
Koshkonong Mounds Country Club
Wishing Well Rv Resort Deep Well Syst
Stagecoach Inn
Club 26
Hebron Community & Head Start Building
Island Bar & Grille
Topcon Positioning Systems
1 health-basedBethlehem United Methodist
Sammys Place
Whats The Point
Kingdom Hall Of Jehovahs Witnesses
Kemlers Lamp
Bitzs Outer Limits
Pilgrims Campground
Schloesser Enterprises
Koshkonong Mounds Country Club Bear Trap
All resolvedSunset Bar & Grill
Petes Bar
Edwin Frohmader Vfw Post 1879
Blackhawk Club Corp
Blackhawk Campground
Hebron Campground
St Johns Ev Lutheran Church
Oakland Center Tavern
Wellington Meadows
Mile Away Motel
Rock River Mobile Home Park
Hebron United Methodist Church
Wishing Well Cottages
Old Green Dragon Private Residence
North Shore Resort 1
Larsen Company 283, The
Riverside Resort
Blackhawk Cottages
North Shore Resort 2
Hebron School
Plambecks Cottage
Oakland Seventh Day Adventist
St Johns Community Church
Pattens Marine
Light Shine Christmas Gift House & Tea Room
Contaminants Found
A naturally occurring element that can cause cancer and other health effects at high levels.
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.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Sep 2025
How Does This Compare?
Janesville (53538) has more violations than 70% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 12.
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.