Washington County, MN

ZIP 55003

In ZIP 55003, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Hudson Waterworks meets every EPA legal limit; 13 contaminants are above health goals, led by pfos at 1.4× California’s Public Health Goal.
• Nearest Superfund site: Baytown Township Ground Water Plume, 2.5 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Andersen Corp (94%), mostly cobalt compounds.
• Fine particles (PM2.5) average 7.8 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 55003

• Superfund sites nearbyF
• Factories and industrial sitesD to F
• Oil and gas wellsA
• Parks and nature nearbyB
• Air qualityC
• Drinking water qualityC
• Pesticide useC
• Neighborhood health statusA to C
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsB to C
• Radiation signalsD

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

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