Riverside County, CA

ZIP 92236

In ZIP 92236, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Chuckawalla Valley State Prison has 1 contaminant at or over an EPA legal limit; 11 contaminants are above health goals, led by arsenic at 6,419× California’s Public Health Goal.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Armtec Defense Technologies (60%), mostly ethylbenzene.
• Fine particles (PM2.5) average 9.3 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 92236

• Superfund sites nearbyA
• Factories and industrial sitesB to C
• Oil and gas wellsA
• Parks and nature nearbyB to D
• Air qualityA to F
• Drinking water qualityB to F
• Pesticide useD to F
• Neighborhood health statusA to D
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsD

Based on 12 census tracts · compiled September 10, 2026 · how each grade works and its sources

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