Adams County, WA

ZIP 99344

In ZIP 99344, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Rainier Tracts Water Assn 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 66% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Sgl Composites LLC (57%), mostly hydrogen cyanide.
• Fine particles (PM2.5) average 7.4 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 5,279,716 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 99344

• Superfund sites nearbyA to D
• Factories and industrial sitesA to C
• Oil and gas wellsA to B
• Parks and nature nearbyB to D
• Air qualityA to C
• Drinking water qualityA to F
• Pesticide useF
• Neighborhood health statusC to D
• Past wildfire impactsA to F
• Past flood impactsA
• Noise levelsA
• Radiation signalsC to D

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

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