Riverside County, CA

ZIP 92587

In ZIP 92587, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Perris, City Of meets every EPA legal limit; 8 contaminants are above health goals, led by lead at 175× California’s Public Health Goal.
• Closer to Superfund sites than 58% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Sterigenics-Ontario Facility (67%), mostly ethylene oxide.
• Fine particles (PM2.5) average 8.0 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 92587

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

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

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