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 7,064 regulated facilities (#18 of 136 in California), including 5 (0.1%) High-Risk sites and $63,500 in federal penalties. Countywide due diligence also covers 50 Safe Drinking Water (SDWIS) facilities, 113 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 05, 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 High-Risk EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • NOVATO, CA (ZIP 94948 Sector) | HIGH (84/100) | Significant Violation (12 qtrs NC) | 🔒 Federal Penalty on File • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • MILL VALLEY, CA (ZIP 94941 Sector) | HIGH (64/100) | Violation Identified (7 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • SAUSALITO, CA (ZIP 94965 Sector) | HIGH (64/100) | Significant Violation (4 qtrs NC) | 🔒 4 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • SAN RAFAEL, CA (ZIP 94903 Sector) | MODERATE (53/100) | Unknown (4 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • MILL VALLEY, CA (ZIP 94941 Sector) | MODERATE (41/100) | Violation (9 qtrs NC) | 🔒 9 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • NOVATO, CA (ZIP 94945 Sector) | MODERATE (35/100) | Resolved / Historical Non-Compliance (3 qtrs NC) | 🔒 3 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • SAN RAFAEL, CA (ZIP 94901 Sector) | MODERATE (35/100) | Resolved / Historical Non-Compliance (3 qtrs NC) | 🔒 3 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • NOVATO, CA (ZIP 94949 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| CENTRAL MARIN SAN. AGENCY WWTF FREE PREVIEW (LOW RISK) | 1301 ANDERSON DRIVE, SAN RAFAEL, CA 94901 | LOW (19/100) | Unknown (0 qtrs NC) | $0 |
| CAR CARE PLUS INC DBA AAA AUTO REPAIR CENTER FREE PREVIEW (LOW RISK) | 101 ROBLAR DR, NOVATO, CA 94949 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| VINTAGE OAKS MOTORS INC DBA KIA MARIN FREE PREVIEW (LOW RISK) | 105 VINTAGE WAY, NOVATO, CA 94945 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| HAHNEMANN LABORATORIES INC DBA ALPINE PHARMACEUTICALS FREE PREVIEW (LOW RISK) | 1940 4TH ST, SAN RAFAEL, CA 94901 | LOW (16/100) | 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, California?
Public U.S. EPA records track 7,064 regulated facilities in Marin County, California (ranking #18 of 136 jurisdictions in CA). Of those, 5 (0.1%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 13 (0.2%) have active non-compliance quarters.
Which ZIP codes and cities in Marin County have the highest regulated facility density?
Within Marin County, the highest concentrations of EPA-tracked facilities are located in ZIP 94901 (San Rafael, 1,432 sites), ZIP 94903 (San Rafael, 918 sites), ZIP 94941 (Mill Valley, 782 sites), spanning municipal corridors including San Rafael (2,360 sites), Novato (1,296 sites), Mill Valley (784 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Marin County?
Across Marin County, 6,972 facilities (98.7% 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 Marin County, CA?
Geologic indoor air screening places Marin 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, CA?
Federal records track 50 Safe Drinking Water (SDWIS) facilities, 113 Clean Water Act NPDES permits, and 23 impaired water dischargers in Marin 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.