St. Joseph County, IN

ZIP 46556

In ZIP 46556, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: University Of Notre Dame meets every EPA legal limit; 4 contaminants are above health goals, led by pfoa at 314× California’s Public Health Goal.
• Nearest Superfund site: Douglas Road/uniroyal, Inc., Landfill, 2.8 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Kennametal Stellite LP (87%), mostly cobalt.
• Fine particles (PM2.5) average 8.2 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 46556

• Superfund sites nearbyF
• Factories and industrial sitesC
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityD
• Drinking water qualityC
• Pesticide useD
• Neighborhood health statusA
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsC

Based on 1 census tract · compiled October 25, 2026 · how each grade works and its sources

Loading the full report, with every source…