Will County, IL

ZIP 60491

In ZIP 60491, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Lockport has 1 contaminant at or over an EPA legal limit; 16 contaminants are above health goals, led by lead at 56× California’s Public Health Goal.
• Nearest Superfund site: Lenz Oil Service, Inc., 5.9 miles away.
• Largest share of modeled toxic air from industry: W R Grace & Co (48%), mostly cobalt compounds.
• Fine particles (PM2.5) average 8.5 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 248,146 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 60491

• Superfund sites nearbyA to D
• Factories and industrial sitesC to D
• Oil and gas wellsA to B
• Parks and nature nearbyC to D
• 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 C
• Radiation signalsD

Based on 9 census tracts · compiled September 10, 2026 · how each grade works and its sources

Loading the full report, with every source…