Klamath County, OR

ZIP 97634

In ZIP 97634, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Klamath Falls Water Dept has 1 contaminant at or over an EPA legal limit; 7 contaminants are above health goals, led by pfos at 7.1× California’s Public Health Goal.
• Nearest Superfund site: North Ridge Estates, 9.2 miles away.
• Largest share of modeled toxic air from industry: Collins Products LLC (85%), mostly formaldehyde.
• Fine particles (PM2.5) average 7.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 575,616 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 97634

• Superfund sites nearbyC
• Factories and industrial sitesB
• Oil and gas wellsA
• Parks and nature nearbyD
• Air qualityB
• Drinking water qualityC to F
• Pesticide useF
• Neighborhood health statusD
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsB

Based on 1 census tract · compiled September 10, 2026 · how each grade works and its sources

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