San Luis Obispo County, California — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in San Luis Obispo County, CA?
In San Luis Obispo County, California, public U.S. EPA records track 429 regulated facilities (#61 of 136 in California), including 1 (0.2%) High-Risk sites and $5,300,000 in federal penalties. Countywide due diligence also covers 0 Safe Drinking Water (SDWIS) facilities, 412 Clean Water NPDES permits, 5 FEMA Federal Disaster Declarations (5 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).
San Luis Obispo 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📊 San Luis Obispo County, CA Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)Municipalities in San Luis Obispo County
ZIP Codes in San Luis Obispo County
Top EPA Regulated Facilities in San Luis Obispo 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 Regulated EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • SAN LUIS OBISPO, CA (ZIP 93401 Sector) | MODERATE (38/100) | No Violation Identified (0 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • PASO ROBLES, CA (ZIP 93446 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • SHANDON, CA (ZIP 93461 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • SAN MIGUEL, CA (ZIP 93451 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • ARROYO GRANDE, CA (ZIP 93420 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • ARROYO GRANDE, CA (ZIP 93420 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • NIPOMO, CA (ZIP 93444 Sector) | MODERATE (33/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • CAMBRIA, CA (ZIP 93428 Sector) | MODERATE (33/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| SYCAMORE MINERAL SPRINGS FREE PREVIEW (LOW RISK) | 1215AVILA BEACH, SAN LUIS OBISPO, CA 93405 | LOW (24/100) | No Violation Identified (0 qtrs NC) | $0 |
| SAMMY'S AUTO DISMANTLING FREE PREVIEW (LOW RISK) | 2246 GASOLINE ALLEY PL, ARROYO GRANDE, CA 93420 | LOW (24/100) | No Violation Identified (0 qtrs NC) | $0 |
| WILD HORSE WINERY FREE PREVIEW (LOW RISK) | 1437 WILD HORSE WINERY CT, TEMPLETON, CA 93465 | LOW (20/100) | No Violation Identified (0 qtrs NC) | $0 |
| EBERLE WINERY FREE PREVIEW (LOW RISK) | 3810 HIGHWAY 46 EAST, PASO ROBLES, CA 93447 | LOW (20/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — San Luis Obispo County, California Environmental Due Diligence
How many EPA-regulated environmental sites are in San Luis Obispo County County, California?
Public U.S. EPA records track 429 regulated facilities in San Luis Obispo County County, California (ranking #61 of 136 jurisdictions in CA). Of those, 1 (0.2%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 4 (0.9%) have active non-compliance quarters.
Which ZIP codes and cities in San Luis Obispo County County have the highest regulated facility density?
Within San Luis Obispo County County, the highest concentrations of EPA-tracked facilities are located in ZIP 93422 (Atascadero, 438 sites), ZIP 93407 (San Luis Obispo, 14 sites), ZIP 93447 (Paso Robles, 12 sites), spanning municipal corridors including Atascadero (445 sites), Not Applicable (224 sites), San Joaquin County (2 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in San Luis Obispo County County?
Across San Luis Obispo County County, 36 facilities (8.4% 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 San Luis Obispo County County, CA?
Geologic indoor air screening places San Luis Obispo County 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 San Luis Obispo County County, CA?
Federal records track 0 Safe Drinking Water (SDWIS) facilities, 412 Clean Water Act NPDES permits, and 20 impaired water dischargers in San Luis Obispo County County, alongside 5 historical FEMA federal disaster declarations (5 flood/storm events).
Does San Luis Obispo County, CA have expansive clay soil or foundation risk?
USDA regional soil engineering screening for San Luis Obispo 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.