Porter County, IN

ZIP 46304

In ZIP 46304, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: L-A-C Utilities meets every EPA legal limit; 2 contaminants are above health goals, led by lead at 11× California’s Public Health Goal.
• Nearest Superfund site: Cam-Or Inc., 6.7 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Tms International LLC (52%), mostly chromium compounds.
• Fine particles (PM2.5) average 7.6 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 152,546 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 46304

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

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

Loading the full report, with every source…