Spokane County, WA

ZIP 99011

In ZIP 99011, 4 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), 0.6 miles away.
• Largest share of modeled toxic air from industry: Spokane Industries (78%), 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 99011

• Superfund sites nearbyF
• Factories and industrial sitesB
• Oil and gas wellsA
• Parks and nature nearbyD
• Air qualityC
• Drinking water qualityF
• Pesticide useF
• Neighborhood health statusB
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsC
• Radiation signalsC

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

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