Cass County, IN

ZIP 46988

In ZIP 46988, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Rochester Water Department meets every EPA legal limit; 6 contaminants are above health goals, led by arsenic at 217× California’s Public Health Goal.
• Nearest Superfund site: Cliff Drive Groundwater Contamination, 8.0 miles away.
• Largest share of modeled toxic air from industry: Haynes International Inc (44%), mostly cobalt.
• Fine particles (PM2.5) average 7.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 172,054 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 46988

• Superfund sites nearbyA to D
• Factories and industrial sitesB to C
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityC
• Drinking water qualityC
• Pesticide useF
• Neighborhood health statusF
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsD to F

Based on 2 census tracts · compiled October 25, 2026 · how each grade works and its sources

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