Rock County, WI

ZIP 53545

In ZIP 53545, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Rock River Leisure Estates Coop meets every EPA legal limit; 5 contaminants are above health goals, led by arsenic at 205× 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 (34%), 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 53545

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

Based on 9 census tracts · compiled October 25, 2026 · how each grade works and its sources

Loading the full report, with every source…