Lake County, IN

ZIP 46373

In ZIP 46373, 9 of the 12 things we check have at least one part graded D or F.

• Drinking water: Cedar Lake Water Works meets every EPA legal limit; 6 contaminants are above health goals, led by lithium at 3.9× the USGS health-based screening level.
• Nearest Superfund site: American Chemical Service, Inc., 5.8 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 8.1 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 46373

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

Based on 7 census tracts · compiled October 25, 2026 · how each grade works and its sources

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