Water Quality in Oshkosh, WI (54947)
EPA violation data for public water systems serving ZIP code 54947.
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 57% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
2,323
Population
24
Water Systems
6
Violations (5yr)
2
Health-Based
Location
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Water Systems Serving This Area (24)
Oshkosh Waterworks
1 health-basedNeenah Waterworks
Fox Crossing Utilities West
1 health-basedCattails Supper Club
Roger Maloney
Winchester Hills Golf Course
Kwik Trip Mini Mart Winchester
Winchester, The
Yellow Jacket Steak House
Grace Lutheran Ch Winchester
Winchester School
Antlers Sports Bar & Grill
Clayton Park
Winchester Community Ctr
Larsen Coop Service
Larsen Tavern
Kwik Trip 628
Larsen Coop
Primitive Gatherings
Lake Poygans Duck Inn Bar
Larsen Coop
Hillcrest Beverages
Whiskey River Pub & Grill
Wheatons Resrt
Contaminants Found
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Sep 2025
How Does This Compare?
Oshkosh (54947) 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.
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.