Pierce County, WA

ZIP 98558

In ZIP 98558, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Roy City Of has 1 contaminant at or over an EPA legal limit; 11 contaminants are above health goals, led by pfos at 11× California’s Public Health Goal.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Kloeckner Metals Corp (22%), mostly chromium.
• Fine particles (PM2.5) average 5.8 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 98558

• Superfund sites nearbyA
• Factories and industrial sitesA
• Oil and gas wellsA
• Parks and nature nearbyD
• Air qualityA
• Drinking water qualityB to F
• Pesticide useC
• Neighborhood health statusD
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsB

Based on 1 census tract · compiled September 10, 2026 · how each grade works and its sources

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