Washington County, OR

ZIP 97225

In ZIP 97225, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Tualatin Valley Water District meets every EPA legal limit; 7 contaminants are above health goals, led by chloroform at 75× California’s Public Health Goal.
• Nearest Superfund site: Gould, Inc., 5.1 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Gunderson LLC (94%), mostly nickel.
• Fine particles (PM2.5) average 7.6 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 97225

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

Based on 12 census tracts · compiled October 25, 2026 · how each grade works and its sources

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