Marion County, IN

ZIP 46256

In ZIP 46256, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: City Of Lawrence Utilities meets every EPA legal limit; 9 contaminants are above health goals, led by arsenic at 125× California’s Public Health Goal.
• Nearest Superfund site: Keystone Corridor Ground Water Contamination, 4.1 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Linde Advanced Material Technologies Inc (35%), mostly nickel.
• Fine particles (PM2.5) average 9.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 141,399 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 46256

• Superfund sites nearbyA to D
• Factories and industrial sitesB to C
• Oil and gas wellsA to F
• Parks and nature nearbyB to D
• Air qualityD to F
• Drinking water qualityC
• Pesticide useA to D
• Neighborhood health statusA to C
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsF

Based on 10 census tracts · compiled October 25, 2026 · how each grade works and its sources

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