Brown County, WI

ZIP 54304

In ZIP 54304, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Central Brown Co Water Authority meets every EPA legal limit; 5 contaminants are above health goals, led by bromodichloromethane at 134× California’s Public Health Goal.
• Nearest Superfund site: Better Brite Plating Co. Chrome and Zinc Shops, 2.4 miles away.
• Largest share of modeled toxic air from industry: Astro Industries Inc (36%), mostly chromium.
• Fine particles (PM2.5) average 7.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 86,682 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 54304

• Superfund sites nearbyF
• Factories and industrial sitesC to F
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityB to C
• Drinking water qualityC
• Pesticide useC to D
• Neighborhood health statusA to D
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsB to D

Based on 12 census tracts · compiled October 25, 2026 · how each grade works and its sources

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