Multnomah County, OR

ZIP 97229

In ZIP 97229, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Hillsboro, City Of meets every EPA legal limit; 6 contaminants are above health goals, led by bromodichloromethane at 93× California’s Public Health Goal.
• Nearest Superfund site: Gould, Inc., 0.9 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Gunderson LLC (97%), mostly nickel.
• Fine particles (PM2.5) average 7.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 156,635 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 97229

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

Based on 19 census tracts · compiled October 25, 2026 · how each grade works and its sources

Loading the full report, with every source…