Clearwater County, ID

ZIP 83520

In ZIP 83520, 1 of the 12 things we check have at least one part graded D or F.

• Drinking water: Sunnyside Park meets every EPA legal limit; 1 contaminant is above health goals, led by arsenic at 2,112× 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: Clearwater Paper Corp-Ppd & Cpd Idaho (99%), mostly formaldehyde.
• Fine particles (PM2.5) average 6.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 39,293 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 83520

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

Based on 1 census tract · compiled October 25, 2026 · how each grade works and its sources

Loading the full report, with every source…