Thurston County, WA

ZIP 98502

In ZIP 98502, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Tumwater City Of meets every EPA legal limit; 9 contaminants are above health goals, led by lead at 212× California’s Public Health Goal.
• Nearest Superfund site: Palermo Well Field Ground Water Contamination, 5.4 miles away.
• Largest share of modeled toxic air from industry: Kloeckner Metals Corp (94%), mostly chromium.
• Fine particles (PM2.5) average 5.2 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 11,135 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 98502

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

Based on 9 census tracts · compiled September 10, 2026 · how each grade works and its sources

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