Lake County, IN

ZIP 46321

In ZIP 46321, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Schererville Water Department meets every EPA legal limit; 7 contaminants are above health goals, led by bromodichloromethane at 135× California’s Public Health Goal.
• Nearest Superfund site: American Chemical Service, Inc., 4.3 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Tms International LLC (40%), mostly chromium compounds.
• Fine particles (PM2.5) average 8.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 154,031 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 46321

• Superfund sites nearbyF
• Factories and industrial sitesD to F
• Oil and gas wellsA to D
• Parks and nature nearbyC
• Air qualityF
• Drinking water qualityC
• Pesticide useC
• Neighborhood health statusB to C
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsD

Based on 6 census tracts · compiled October 25, 2026 · how each grade works and its sources

Loading the full report, with every source…