Washington County, MN

ZIP 55128

In ZIP 55128, 9 of the 12 things we check have at least one part graded D or F.

• Drinking water: Woodbury has 3 contaminants at or over an EPA legal limit; 17 contaminants are above health goals, led by pfos at 5.9× California’s Public Health Goal.
• Nearest Superfund site: Oakdale Dump, 2.0 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Northern Iron & Machine (51%), mostly nickel.
• Fine particles (PM2.5) average 8.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 49,911 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 55128

• Superfund sites nearbyD to F
• Factories and industrial sitesC to D
• Oil and gas wellsA
• Parks and nature nearbyD to F
• Air qualityD to F
• Drinking water qualityC to F
• Pesticide useC to D
• Neighborhood health statusB to D
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsC to D

Based on 8 census tracts · compiled September 10, 2026 · how each grade works and its sources

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