Multnomah County, OR

ZIP 97233

In ZIP 97233, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Portland Water Bureau meets every EPA legal limit; 4 contaminants are above health goals, led by arsenic at 194× California’s Public Health Goal.
• Nearest Superfund site: Reynolds Metals Company, 3.3 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Gunderson LLC (88%), mostly nickel.
• Fine particles (PM2.5) average 9.3 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 97233

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

Based on 15 census tracts · compiled October 25, 2026 · how each grade works and its sources

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