Contra Costa County, CA

ZIP 94514

In ZIP 94514, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Doubletree Ranch Water System has 1 contaminant at or over an EPA legal limit; 3 contaminants are above health goals, led by arsenic at 8,485× California’s Public Health Goal.
• Nearest Superfund site: Lawrence Livermore Natl Lab, Main Site (usdoe), 6.6 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Owens-Brockway Glass Container Inc Plant #22 (62%), mostly chromium compounds.
• Fine particles (PM2.5) average 7.6 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 98,092 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 94514

• Superfund sites nearbyC to F
• Factories and industrial sitesB to D
• Oil and gas wellsA
• Parks and nature nearbyA to C
• Air qualityB to C
• Drinking water qualityC to F
• Pesticide useB to D
• Neighborhood health statusA to C
• Past wildfire impactsF
• Past flood impactsB
• Noise levelsA
• Radiation signalsB to C

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

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