Water Quality in Oshkosh, WI (54904)
EPA violation data for public water systems serving ZIP code 54904.
Active Health Violations
4 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 72% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
22,273
Population
33
Water Systems
13
Violations (5yr)
4
Health-Based
Location
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Water Systems Serving This Area (33)
Oshkosh Waterworks
1 health-basedFond Du Lac Waterworks
1 health-basedNeenah Waterworks
Fox Crossing Utilities West
1 health-basedAlgoma Tn Sanitary Dist 1
Jims County Line
Wyldewood Baptist School & Church
Winklers Westward Ho
Bare Bones
Quality Paint & Coatings Oshkosh
Team Winnebagoland
Rosetown Mobile Home Park
Silvercrest Apartments
1 health-basedAll Saints Lutheran Ch
Castle Pierce Printing
Kwik Trip 618 Mini Mart Oshkosh
Ymca Tennis Ctr
Brothers Boat House
Zion Ev Lutheran Ch
Misty Pines Cmpgd Office
Umos Aurora Shelter & School
Tasteful Flamingo, The
St Pauls United Ch Of Christ
Hidden Harbor
Vinland Town Hall
Sports Shed The
Kwik Trip 871
Wehrmanns Bar Llc
Community Baptist Ch Of Allenville
Serve U Beverage Citgo
Log Cabin Bar & Grill
Algoma Municipal Bldg
Misty Pines Cmpgd Campsites
Contaminants Found
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?
Oshkosh (54904) has more violations than 72% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 13.
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.