Grays Harbor County, WA

ZIP 98520

In ZIP 98520, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Westport Water Department meets every EPA legal limit; 10 contaminants are above health goals, led by pfos at 2.7× 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: Cosmo Specialty Fibers Inc. (63%), mostly formaldehyde.
• Fine particles (PM2.5) average 3.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 23,513 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 98520

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

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

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