Rock County, WI

ZIP 53511

In ZIP 53511, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Orfordville Waterworks meets every EPA legal limit; 7 contaminants are above health goals, led by arsenic at 214× California’s Public Health Goal.
• Nearest Superfund site: Beloit Corp., 2.6 miles away.
• Largest share of modeled toxic air from industry: Taylor Co (32%), mostly chromium.
• Fine particles (PM2.5) average 7.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 274,069 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 53511

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

Based on 17 census tracts · compiled October 25, 2026 · how each grade works and its sources

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