Lincoln County, WA

ZIP 99103

In ZIP 99103, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Soap Lake Water Dept has 1 contaminant at or over an EPA legal limit; 5 contaminants are above health goals, led by pfoa at 800× 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: Sgl Composites LLC (87%), mostly hydrogen cyanide.
• Fine particles (PM2.5) average 6.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 525,289 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 99103

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

Based on 2 census tracts · compiled October 25, 2026 · how each grade works and its sources

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