Spokane County, WA

ZIP 99001

In ZIP 99001, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Spokane City Of meets every EPA legal limit; 10 contaminants are above health goals, led by pfos at 3.4× California’s Public Health Goal.
• Nearest Superfund site: Fairchild Air Force Base (4 Waste Areas), 3.2 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Spokane Industries (79%), mostly chromium.
• Fine particles (PM2.5) average 7.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 196,024 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 99001

• Superfund sites nearbyF
• Factories and industrial sitesC
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityC
• Drinking water qualityF
• Pesticide useD
• Neighborhood health statusC
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsB
• Radiation signalsC

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

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