Spokane County, WA

ZIP 99218

In ZIP 99218, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: River Bluff Water System meets every EPA legal limit; 1 contaminant is above health goals, led by arsenic at 893× California’s Public Health Goal.
• Nearest Superfund site: North Market Street, 0.7 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Steelfab Of Oregon (77%), 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 99218

• Superfund sites nearbyF
• Factories and industrial sitesB to F
• Oil and gas wellsA to C
• Parks and nature nearbyB to D
• Air qualityD
• Drinking water qualityA to C
• Pesticide useC to D
• Neighborhood health statusB to F
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to C
• Radiation signalsF

Based on 9 census tracts · compiled October 25, 2026 · how each grade works and its sources

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