Pierce County, WA

ZIP 98391

In ZIP 98391, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Orting City Of meets every EPA legal limit; 9 contaminants are above health goals, led by lead at 41× California’s Public Health Goal.
• Nearest Superfund site: Hidden Valley Landfill (thun Field), 5.8 miles away.
• Largest share of modeled toxic air from industry: Puget Sound Coatings (44%), mostly diisocyanates.
• Fine particles (PM2.5) average 6.8 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 98391

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

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

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