Columbia County, WI

ZIP 53555

In ZIP 53555, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Merrimac Waterworks meets every EPA legal limit; 8 contaminants are above health goals, led by lead at 76× California’s Public Health Goal.
• Nearest Superfund site: Refuse Hideaway Landfill, 5.3 miles away.
• Largest share of modeled toxic air from industry: American Packaging Corp Site (68%), mostly diisocyanates.
• Fine particles (PM2.5) average 7.2 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 319,659 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 53555

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

Based on 4 census tracts · compiled September 10, 2026 · how each grade works and its sources

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