Solano County, CA

ZIP 95620

In ZIP 95620, 9 of the 12 things we check have at least one part graded D or F.

• Drinking water: Uc - Davis meets every EPA legal limit; 8 contaminants are above health goals, led by vanadium at 1.1× California’s Public Health Goal.
• Closer to Superfund sites than 88% 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. (47%), mostly chromium.
• Fine particles (PM2.5) average 8.3 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 95620

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

Based on 8 census tracts · compiled September 10, 2026 · how each grade works and its sources

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