Rock County, WI

ZIP 53548

In ZIP 53548, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: Edgerton Waterworks meets every EPA legal limit; 7 contaminants are above health goals, led by lead at 35× California’s Public Health Goal.
• Nearest Superfund site: Janesville Ash Beds, 1.7 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Evonik Industries (92%), mostly ethylene oxide.
• 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 53548

• Superfund sites nearbyC to F
• Factories and industrial sitesC to F
• Oil and gas wellsA
• Parks and nature nearbyD to F
• Air qualityB to C
• Drinking water qualityD to F
• Pesticide useD to F
• Neighborhood health statusC to F
• 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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