Lassen County, CA

ZIP 96056

In ZIP 96056, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Del Oro Water Co. - Hat Creek District has 2 contaminants at or over an EPA legal limit; 14 contaminants are above health goals, led by pfda at 9.4× Preliminary Research (Under Review).
• 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: Sierra Pacific Industries - Burney Div (89%), mostly dioxin and dioxin-like compounds.
• Fine particles (PM2.5) average 7.6 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 82,047 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 96056

• Superfund sites nearbyA
• Factories and industrial sitesA
• Oil and gas wellsA
• Parks and nature nearbyA
• Air qualityB to C
• Drinking water qualityA to F
• Pesticide useD to F
• Neighborhood health statusC to F
• Past wildfire impactsF
• Past flood impactsA
• Noise levelsA
• Radiation signalsA

Based on 3 census tracts · compiled October 25, 2026 · how each grade works and its sources

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