Glenn County, CA

ZIP 95943

In ZIP 95943, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Cal-Water Service Co.-Hamilton City meets every EPA legal limit; 7 contaminants are above health goals, led by arsenic at 500× 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: Johns Manville (100%), mostly chromium compounds.
• Fine particles (PM2.5) average 9.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 891,470 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 95943

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

Based on 2 census tracts · compiled September 10, 2026 · how each grade works and its sources

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