Sonoma County, CA

ZIP 95476

In ZIP 95476, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Valley Of The Moon Water District has 2 contaminants at or over an EPA legal limit; 14 contaminants are above health goals, led by pfos at 3.7× California’s Public Health Goal.
• Nearest Superfund site: Sola Optical USA, Inc., 2.7 miles away.
• Largest share of modeled toxic air from industry: Martinez Refining Co LLC (31%), mostly sulfuric acid.
• Fine particles (PM2.5) average 7.4 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 1,321,118 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 95476

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

Based on 13 census tracts · compiled September 10, 2026 · how each grade works and its sources

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