Pend Oreille County, WA

ZIP 99156

In ZIP 99156, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: River Bend Water System meets every EPA legal limit; 7 contaminants are above health goals, led by lead at 32× California’s Public Health Goal.
• Nearest Superfund site: Colbert Landfill, 9.5 miles away.
• Largest share of modeled toxic air from industry: Safran Cabin Materials LLC (99%), mostly formaldehyde.
• Fine particles (PM2.5) average 7.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 196,024 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 99156

• Superfund sites nearbyA to C
• Factories and industrial sitesA to B
• Oil and gas wellsA
• Parks and nature nearbyB to C
• Air qualityB
• Drinking water qualityC to F
• Pesticide useC to F
• Neighborhood health statusD to F
• Past wildfire impactsA to D
• Past flood impactsA
• Noise levelsA
• Radiation signalsD to F

Based on 5 census tracts · compiled September 10, 2026 · how each grade works and its sources

Loading the full report, with every source…