St. Croix County, WI

ZIP 54016

In ZIP 54016, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Hudson Waterworks meets every EPA legal limit; 15 contaminants are above health goals, led by lead at 12× California’s Public Health Goal.
• Nearest Superfund site: Baytown Township Ground Water Plume, 4.2 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Gea (51%), mostly chromium.
• Fine particles (PM2.5) average 7.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 135,744 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 54016

• Superfund sites nearbyC to F
• Factories and industrial sitesB to C
• Oil and gas wellsA
• Parks and nature nearbyC to D
• Air qualityC
• Drinking water qualityC to D
• Pesticide useD to F
• Neighborhood health statusB to C
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsD

Based on 8 census tracts · compiled September 10, 2026 · how each grade works and its sources

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