Jefferson County, IA

ZIP 52533

In ZIP 52533, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Ottumwa Water Works meets every EPA legal limit; 11 contaminants are above health goals, led by lithium at 3.3× the USGS health-based screening level.
• Nearest Superfund site: Fairfield Coal Gasification Plant, 4.0 miles away.
• Largest share of modeled toxic air from industry: Dexter Laundry Inc (82%), mostly chromium.
• Fine particles (PM2.5) average 6.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 136,301 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 52533

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

Based on 3 census tracts · compiled October 25, 2026 · how each grade works and its sources

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