Marin County, California — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Marin County, CA?
In Marin County, California, public U.S. EPA records track 65 regulated facilities (#96 of 136 in California), including 2 (3.1%) High-Risk sites and $5,308,500 in federal penalties. Countywide due diligence also covers 0 Safe Drinking Water (SDWIS) facilities, 53 Clean Water NPDES permits, 3 FEMA Federal Disaster Declarations (3 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).
Marin 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📊 Marin County, CA Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)Municipalities in Marin County
ZIP Codes in Marin County
Top EPA Regulated Facilities in Marin 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 RAFAEL, CA (ZIP 94901 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 • NOVATO, CA (ZIP 94947 Sector) | MODERATE (33/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • NOVATO, CA (ZIP 94945 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Federal Penalty on File • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • SAUSALITO, CA (ZIP 94965 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • SAN RAFAEL, CA (ZIP 94901 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (9 qtrs NC) | 🔒 9 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • NOVATO, CA (ZIP 94947 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • TIBURON, CA (ZIP 94920 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • NOVATO, CA (ZIP 94901 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (3 qtrs NC) | 🔒 3 Qtrs Non-Compliance • Unlock → |
| SEWERAGE AGENCY SOUTHERN MARIN FREE PREVIEW (LOW RISK) | 450 SYCAMORE AVE, MILL VALLEY, CA 94941 | LOW (23/100) | No Violation Identified (0 qtrs NC) | $0 |
| SAN RAFAEL YACHT HARBOR FREE PREVIEW (LOW RISK) | 557 FRANCISCO BLVD E, SAN RAFAEL, CA 94901 | LOW (20/100) | No Violation Identified (0 qtrs NC) | $0 |
| BIOMARIN PHARMACEUTICAL INC FREE PREVIEW (LOW RISK) | 35 LEVERONI COURT, NOVATO, CA 94949 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| MARIN AIRPORTER FREE PREVIEW (LOW RISK) | 8 LOVELL AVE, SAN RAFAEL, CA 94901 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Marin County, California Environmental Due Diligence
How many EPA-regulated environmental sites are in Marin County County, California?
Public U.S. EPA records track 65 regulated facilities in Marin County County, California (ranking #96 of 136 jurisdictions in CA). Of those, 2 (3.1%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 1 (1.5%) have active non-compliance quarters.
Which ZIP codes and cities in Marin County County have the highest regulated facility density?
Within Marin County County, the highest concentrations of EPA-tracked facilities are located in local postal sectors, spanning municipal corridors including Marin City (10 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Marin County County?
Across Marin County County, 15 facilities (23.1% 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 Marin County County, CA?
Geologic indoor air screening places Marin 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 Marin County County, CA?
Federal records track 0 Safe Drinking Water (SDWIS) facilities, 53 Clean Water Act NPDES permits, and 7 impaired water dischargers in Marin County County, alongside 3 historical FEMA federal disaster declarations (3 flood/storm events).
Does Marin County, CA have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Marin County indicates a LOW shrink-swell risk signal and steel pipe corrosivity rated Low. Run a street address scan to unlock the exact parcel soil series, LEP %, and water table depth.