Riverside County, California — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Riverside County, CA?
In Riverside County, California, public U.S. EPA records track 23,900 regulated facilities (#7 of 136 in California), including 41 (0.2%) High-Risk sites and $22,507,605 in federal penalties. Countywide due diligence also covers 279 Safe Drinking Water (SDWIS) facilities, 1,619 Clean Water NPDES permits, 6 FEMA Federal Disaster Declarations (2 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).
Riverside County, CA 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Riverside County, CA Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)Municipalities in Riverside County
ZIP Codes in Riverside County
Top EPA Regulated Facilities in Riverside County, CA
100% of High-Risk & penalized facilities have facility names, street names, and dockets redacted (3 Low-Risk compliant records shown as Free Previews).
| Facility Name / Hazard Type | Sector Location (Street Redacted) | Risk Tier & Score | Compliance Status | Enforcement / Unlock |
|---|---|---|---|---|
| 🔒 Locked High-Risk EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • MECCA, CA (ZIP 92254 Sector) | HIGH (70/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • CORONA, CA (ZIP 92879 Sector) | HIGH (68/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • BLYTHE, CA (ZIP 92225 Sector) | HIGH (67/100) | Violation (7 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • RIVERSIDE, CA (ZIP 92507 Sector) | HIGH (67/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • CORONA, CA (ZIP 92880 Sector) | HIGH (67/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • BLYTHE, CA (ZIP 92225 Sector) | HIGH (64/100) | Significant Violation (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • CABAZON, CA (ZIP 92230 Sector) | HIGH (64/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • RIVERSIDE, CA (ZIP 92501 Sector) | MODERATE (56/100) | Violation (9 qtrs NC) | 🔒 9 Qtrs Non-Compliance • Unlock → |
| EMILY WALTON FREE PREVIEW (LOW RISK) | 297 N BERNARDO AVE, MOUNTAIN VIEW, CA 94043 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| BK NELSON CONSTRUCTION INC FREE PREVIEW (LOW RISK) | 435 RIVERA ST STE E, RIVERSIDE, CA 92501 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| VALLEY AUTO WATER FREE PREVIEW (LOW RISK) | , , CA | LOW (10/100) | No Violation Identified (0 qtrs NC) | $0 |
| ALHATTI CHRISTIAN MOUNTAIN RES FREE PREVIEW (LOW RISK) | , , CA | LOW (10/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Riverside County, California Environmental Due Diligence
How many EPA-regulated environmental sites are in Riverside County, California?
Public U.S. EPA records track 23,900 regulated facilities in Riverside County, California (ranking #7 of 136 jurisdictions in CA). Of those, 41 (0.2%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 67 (0.3%) have active non-compliance quarters.
Which ZIP codes and cities in Riverside County have the highest regulated facility density?
Within Riverside County, the highest concentrations of EPA-tracked facilities are located in ZIP 92503 (Riverside, 1,273 sites), ZIP 92507 (Riverside, 1,149 sites), ZIP 94043 (Mountain View, 1,146 sites), spanning municipal corridors including Riverside (6,369 sites), Corona (3,031 sites), Mountain View (2,253 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Riverside County?
Across Riverside County, 23,340 facilities (97.7% of regulated sites) are registered Resource Conservation and Recovery Act (RCRA) hazardous waste generators or handlers, and 0 industrial sites report toxic chemical releases to the EPA Toxics Release Inventory (TRI).
What is the EPA Radon Zone classification for Riverside County, CA?
Geologic indoor air screening places Riverside County in EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L). Counties in EPA Radon Zone 2 have a predicted average indoor radon level between 2.0 and 4.0 pCi/L. Testing basement or ground-floor living areas is recommended during home inspection.
How many drinking water systems (SDWIS), impaired water bodies, and FEMA flood disasters are recorded in Riverside County, CA?
Federal records track 279 Safe Drinking Water (SDWIS) facilities, 1,619 Clean Water Act NPDES permits, and 193 impaired water dischargers in Riverside County, alongside 6 historical FEMA federal disaster declarations (2 flood/storm events).
Does Riverside County, CA have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Riverside County indicates a LOW shrink-swell risk signal and steel pipe corrosivity rated Moderate. Run a street address scan to unlock the exact parcel soil series, LEP %, and water table depth.