Sonoma County, CA

ZIP 94972

In ZIP 94972, 2 of the 12 things we check have at least one part graded D or F.

• Drinking water: Valley Ford Water Association has 1 contaminant at or over an EPA legal limit; 9 contaminants are above health goals, led by bromodichloromethane at 381× 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: Lgc Biosearch Technologies Inc (88%), mostly dichloromethane (methylene chloride).
• Fine particles (PM2.5) average 6.6 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 94972

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

Based on 2 census tracts · compiled October 25, 2026 · how each grade works and its sources

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