St. Joseph County, IN

ZIP 46552

In ZIP 46552, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Hamilton Grove meets every EPA legal limit; 7 contaminants are above health goals, led by bromodichloromethane at 81× California’s Public Health Goal.
• Nearest Superfund site: Beck's Lake, 5.4 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Howmet Castings & Services Inc. (37%), mostly chromium.
• Fine particles (PM2.5) average 7.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 144,822 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 46552

• Superfund sites nearbyA to D
• Factories and industrial sitesB to C
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityA to B
• Drinking water qualityA to C
• Pesticide useF
• Neighborhood health statusC to D
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsB to C

Based on 5 census tracts · compiled October 25, 2026 · how each grade works and its sources

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