Skagit County, WA

ZIP 98274

In ZIP 98274, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Tatoosh Water Company meets every EPA legal limit; 6 contaminants are above health goals, led by arsenic at 417× California’s Public Health Goal.
• Closer to Superfund sites than 54% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Hf Sinclair Puget Sound Refining LLC (64%), mostly sulfuric acid.
• Fine particles (PM2.5) average 5.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 609,556 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 98274

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

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

Loading the full report, with every source…