San Mateo County, CA

ZIP 94005

In ZIP 94005, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: City Of Daly City meets every EPA legal limit; 11 contaminants are above health goals, led by pfos at 1.3× California’s Public Health Goal.
• Nearest Superfund site: Hunters Point Naval Shipyard, 3.7 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Tesla Inc. (30%), mostly cobalt compounds.
• Fine particles (PM2.5) average 8.2 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 38,964 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 94005

• Superfund sites nearbyD
• Factories and industrial sitesF
• Oil and gas wellsA
• Parks and nature nearbyB
• Air qualityD
• Drinking water qualityC
• Pesticide useC
• Neighborhood health statusA
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsC

Based on 1 census tract · compiled October 25, 2026 · how each grade works and its sources

Loading the full report, with every source…