Klamath County, OR

ZIP 97623

In ZIP 97623, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Klamath Co Project Homefront meets every EPA legal limit; 2 contaminants are above health goals, led by lead at 23× California’s Public Health Goal.
• Nearest Superfund site: North Ridge Estates, 7.7 miles away.
• Largest share of modeled toxic air from industry: Collins Products LLC (71%), mostly formaldehyde.
• Fine particles (PM2.5) average 7.5 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 97623

• Superfund sites nearbyA to C
• Factories and industrial sitesA
• Oil and gas wellsA
• Parks and nature nearbyB to D
• Air qualityA to C
• Drinking water qualityC to D
• Pesticide useF
• Neighborhood health statusD to F
• Past wildfire impactsA to D
• Past flood impactsA
• Noise levelsA
• Radiation signalsC

Based on 3 census tracts · compiled September 10, 2026 · how each grade works and its sources

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