Pierce County, WA

ZIP 98445

In ZIP 98445, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Spanaway Water Company has 2 contaminants at or over an EPA legal limit; 11 contaminants are above health goals, led by pfos at 4.7× California’s Public Health Goal.
• Nearest Superfund site: Mcchord Air Force Base (wash Rack/treatment Area), 3.4 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Puget Sound Coatings (39%), mostly diisocyanates.
• Fine particles (PM2.5) average 6.4 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 18,075 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 98445

• Superfund sites nearbyD to F
• Factories and industrial sitesB to D
• Oil and gas wellsA
• Parks and nature nearbyD to F
• Air qualityA
• Drinking water qualityC to F
• Pesticide useB to D
• Neighborhood health statusB to D
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsB

Based on 14 census tracts · compiled September 10, 2026 · how each grade works and its sources

Loading the full report, with every source…