Yolo County, CA

ZIP 95645

In ZIP 95645, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: Golden State Water Co. - Robbins has 1 contaminant at or over an EPA legal limit; 5 contaminants are above health goals, led by arsenic at 5,069× 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: Watts Regulator Co. (32%), mostly hydrogen cyanide.
• Fine particles (PM2.5) average 8.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 1,270,800 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 95645

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

Based on 4 census tracts · compiled October 25, 2026 · how each grade works and its sources

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