McHenry County, IL

ZIP 60102

In ZIP 60102, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Crystal Lake has 2 contaminants at or over an EPA legal limit; 19 contaminants are above health goals, led by pfos at 2.2× California’s Public Health Goal.
• Nearest Superfund site: Wauconda Sand & Gravel, 8.1 miles away.
• Largest share of modeled toxic air from industry: Electri-Flex (22%), mostly chromium.
• Fine particles (PM2.5) average 8.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 211,541 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 60102

• Superfund sites nearbyA to C
• Factories and industrial sitesB to D
• Oil and gas wellsA
• Parks and nature nearbyC to F
• Air qualityC to D
• Drinking water qualityD to F
• Pesticide useD to F
• Neighborhood health statusA to C
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsD

Based on 12 census tracts · compiled September 10, 2026 · how each grade works and its sources

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