Riverside County, CA

ZIP 92507

In ZIP 92507, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: Riverside Highland Water Company has 2 contaminants at or over an EPA legal limit; 13 contaminants are above health goals, led by pfoa at 914× California’s Public Health Goal.
• Nearest Superfund site: March Air Force Base, 3.5 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Sterigenics-Ontario Facility (54%), mostly ethylene oxide.
• Fine particles (PM2.5) average 10.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 1,172,577 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 92507

• Superfund sites nearbyD to F
• Factories and industrial sitesD to F
• Oil and gas wellsA to C
• Parks and nature nearbyB to C
• Air qualityF
• Drinking water qualityC to F
• Pesticide useC to D
• Neighborhood health statusA to D
• Past wildfire impactsC
• Past flood impactsC
• Noise levelsA to D
• Radiation signalsB to D

Based on 21 census tracts · compiled October 25, 2026 · how each grade works and its sources

Loading the full report, with every source…