Spokane County, WA

ZIP 99251

In ZIP 99251, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Whitworth Water District 2 has 1 contaminant at or over an EPA legal limit; 6 contaminants are above health goals, led by pfos at 4.2× California’s Public Health Goal.
• Nearest Superfund site: Kaiser Aluminum (mead Works), 2.5 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Spokane Industries (71%), mostly chromium.
• Fine particles (PM2.5) average 8.3 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 99251

• Superfund sites nearbyF
• Factories and industrial sitesC
• Oil and gas wellsB
• Parks and nature nearbyD
• Air qualityD
• Drinking water qualityF
• Pesticide useF
• Neighborhood health statusB
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsF

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

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