Morrow County, OR

ZIP 97818

In ZIP 97818, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Country Garden Estates Mhp meets every EPA legal limit; 6 contaminants are above health goals, led by pfos at 1.9× California’s Public Health Goal.
• Nearest Superfund site: Umatilla Army Depot (lagoons), 5.7 miles away.
• Largest share of modeled toxic air from industry: Alto Columbia LLC (98%), mostly acetaldehyde.
• Fine particles (PM2.5) average 6.6 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 1,328,988 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 97818

• Superfund sites nearbyC to D
• Factories and industrial sitesB to C
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityA
• Drinking water qualityD to F
• Pesticide useF
• Neighborhood health statusD
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsD

Based on 2 census tracts · compiled September 10, 2026 · how each grade works and its sources

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