Winnebago County, IL

ZIP 61112

In ZIP 61112, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Prairie Path Water Company-Wildwood meets every EPA legal limit; 7 contaminants are above health goals, led by arsenic at 200× California’s Public Health Goal.
• Nearest Superfund site: Southeast Rockford Ground Water Contamination, 3.1 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Arnold Magnetic Technologies - Arnold Engineering (28%), mostly chromium.
• Fine particles (PM2.5) average 7.4 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 190,217 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 61112

• Superfund sites nearbyF
• Factories and industrial sitesD
• Oil and gas wellsC
• Parks and nature nearbyC
• Air qualityC
• Drinking water qualityC
• Pesticide useD to F
• Neighborhood health statusC to F
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to B
• Radiation signalsF

Based on 3 census tracts · compiled October 25, 2026 · how each grade works and its sources

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