Marshall County, IL

ZIP 61537

In ZIP 61537, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: Henry has 1 contaminant at or over an EPA legal limit; 12 contaminants are above health goals, led by pfos at 3.2× California’s Public Health Goal.
• Closer to Superfund sites than 56% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Mexichem Specialty Resins Inc (73%), mostly vinyl chloride.
• Fine particles (PM2.5) average 7.2 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 203,848 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 61537

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

Based on 3 census tracts · compiled September 10, 2026 · how each grade works and its sources

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