Rock County, WI

ZIP 53501

In ZIP 53501, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Janesville Water Utility meets every EPA legal limit; 15 contaminants are above health goals, led by lead at 15× California’s Public Health Goal.
• Nearest Superfund site: Janesville Ash Beds, 4.6 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Evonik Industries (67%), 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 53501

• Superfund sites nearbyF
• Factories and industrial sitesD
• Oil and gas wellsA
• Parks and nature nearbyD
• Air qualityC
• Drinking water qualityD
• Pesticide useF
• Neighborhood health statusC
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsD
• Radiation signalsD

Based on 1 census tract · compiled September 10, 2026 · how each grade works and its sources

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