Marion County, IN
ZIP 46229
In ZIP 46229, 9 of the 12 things we check have at least one part graded D or F.
- Drinking water: Ninestar Connect - Gem Water meets every EPA legal limit; 6 contaminants are above health goals, led by lead at 43× California’s Public Health Goal.
- Nearest Superfund site: Keystone Corridor Ground Water Contamination, 6.4 miles away.
- Largest share of modeled toxic air from industry: Yamaha Marine Precision Propeller Industries Greenfield (34%), mostly nickel.
- Fine particles (PM2.5) average 8.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
- About 172,506 kg of agricultural pesticides are applied in the county each year.
Grades for ZIP 46229
- Superfund sites nearbyA to D
- Factories and industrial sitesC to D
- Oil and gas wellsA to C
- Parks and nature nearbyD to F
- Air qualityD to F
- Drinking water qualityD to F
- Pesticide useB to F
- Neighborhood health statusC to F
- Past wildfire impactsA
- Past flood impactsA
- Noise levelsA to D
- Radiation signalsD to F
Based on 9 census tracts · compiled September 10, 2026 · how each grade works and its sources
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