Jefferson County, WI

ZIP 53156

In ZIP 53156, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Palmyra Waterworks has 1 contaminant at or over an EPA legal limit; 11 contaminants are above health goals, led by pfos at 4.2× California’s Public Health Goal.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Evonik Corp (40%), mostly ethylene oxide.
• Fine particles (PM2.5) average 6.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 204,309 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 53156

• Superfund sites nearbyA
• Factories and industrial sitesC
• Oil and gas wellsA
• Parks and nature nearbyC to D
• Air qualityA to B
• Drinking water qualityD to F
• Pesticide useF
• Neighborhood health statusB to D
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsD

Based on 2 census tracts · compiled September 10, 2026 · how each grade works and its sources

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