Contra Costa County, CA

ZIP 94509

In ZIP 94509, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: City Of Pittsburg meets every EPA legal limit; 16 contaminants are above health goals, led by lead at 16× California’s Public Health Goal.
• Closer to Superfund sites than 61% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Owens-Brockway Glass Container Inc Plant #22 (23%), mostly chromium compounds.
• Fine particles (PM2.5) average 9.2 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 94509

• Superfund sites nearbyA to D
• Factories and industrial sitesD
• Oil and gas wellsA to C
• Parks and nature nearbyB to F
• Air qualityC to F
• Drinking water qualityD
• Pesticide useC to D
• Neighborhood health statusB to C
• Past wildfire impactsA to C
• Past flood impactsB
• Noise levelsA to D
• Radiation signalsB to C

Based on 15 census tracts · compiled September 10, 2026 · how each grade works and its sources

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