Multnomah County, OR

ZIP 97203

In ZIP 97203, 6 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; 9 contaminants are above health goals, led by lead at 32× California’s Public Health Goal.
• Nearest Superfund site: Harbor Oil Inc., 0.8 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Gunderson LLC (91%), mostly nickel.
• Fine particles (PM2.5) average 6.7 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 97203

• Superfund sites nearbyF
• Factories and industrial sitesF
• Oil and gas wellsA
• Parks and nature nearbyD to F
• Air qualityA to B
• Drinking water qualityF
• Pesticide useC to D
• Neighborhood health statusB to C
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsC

Based on 9 census tracts · compiled September 10, 2026 · how each grade works and its sources

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