Pierce County, WA

ZIP 98373

In ZIP 98373, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Western Ranchettes Inc. has 1 contaminant at or over an EPA legal limit; 7 contaminants are above health goals, led by pfos at 4.8× California’s Public Health Goal.
• Nearest Superfund site: Hidden Valley Landfill (thun Field), 2.0 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Puget Sound Coatings (45%), mostly diisocyanates.
• Fine particles (PM2.5) average 6.7 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 98373

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

Based on 12 census tracts · compiled October 25, 2026 · how each grade works and its sources

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