Water Quality in Oshkosh, WI (54971)
EPA violation data for public water systems serving ZIP code 54971.
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 79% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
10,907
Population
28
Water Systems
23
Violations (5yr)
4
Health-Based
Location
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Water Systems Serving This Area (28)
Oshkosh Waterworks
1 health-basedFond Du Lac Waterworks
1 health-basedNeenah Waterworks
Fox Crossing Utilities West
1 health-basedRipon Water Utility
1 health-basedChina One
Tigers Sports Bar & Grill
Equity Coop Livestock Sales Assn
Center House
Center House
H Jaber Package Goods
Neshkoro Bp
Lakeside Ultimart
All resolvedAdams Elementary School
Sunrise Apartments
Tri Arch Inc
Silver Dollar Lounge
Daycholah Center Main Well
Vines & Rushes Winery
Sandstone Camp
Pilgrim Center Conf & Ret
Kelnor Motel
Butte Des Morts Mobil Mart
C Js At The Wayside
Hwy 23 Outdoor
Family Fil Bp
Poy Sippi Mini Mart Bp
Peggys Rush Inn Bar
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
At high levels, nitrate can cause blue baby syndrome in infants.
Similar to nitrate — harmful to infants at high levels.
Lead & Copper Levels
Lead (Pb)
Approaching limitSampled: Jun 2025
How Does This Compare?
Oshkosh (54971) has more violations than 79% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 23.
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.