Multnomah County, OR

ZIP 97266

In ZIP 97266, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Milwaukie, City Of has 1 contaminant at or over an EPA legal limit; 5 contaminants are above health goals, led by pfos at 4.3× California’s Public Health Goal.
• Nearest Superfund site: Northwest Pipe & Casing/hall Process Company, 4.1 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Gunderson LLC (90%), mostly nickel.
• Fine particles (PM2.5) average 9.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 44,620 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 97266

• Superfund sites nearbyC to D
• Factories and industrial sitesD
• Oil and gas wellsA
• Parks and nature nearbyB to C
• Air qualityD to F
• Drinking water qualityC to D
• Pesticide useB to D
• Neighborhood health statusB to C
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsB

Based on 13 census tracts · compiled October 25, 2026 · how each grade works and its sources

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