Mendocino County, California — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Mendocino County, CA?
In Mendocino County, California, public U.S. EPA records track 98 regulated facilities (#92 of 136 in California), including 1 (1.0%) High-Risk sites and $5,300,000 in federal penalties. Countywide due diligence also covers 1 Safe Drinking Water (SDWIS) facilities, 93 Clean Water NPDES permits, 4 FEMA Federal Disaster Declarations (4 flood/storm), USDA Soil Foundation Shrink-Swell (MODERATE signal), and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).
Mendocino 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📊 Mendocino County, CA Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)Municipalities in Mendocino County
ZIP Codes in Mendocino County
Top EPA Regulated Facilities in Mendocino 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 • FORT BRAGG, CA (ZIP 95437 Sector) | MODERATE (37/100) | No Violation Identified (0 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • UKIAH, CA (ZIP 95482 Sector) | MODERATE (36/100) | Resolved / Historical Non-Compliance (5 qtrs NC) | 🔒 5 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • LAYTONVILLE, CA (ZIP 95454 Sector) | MODERATE (33/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • REDWOOD VALLEY, CA (ZIP 95470 Sector) | MODERATE (33/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • UKIAH, CA (ZIP 95482 Sector) | MODERATE (32/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • LAYTONVILLE, CA (ZIP 95454 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • WILLITS, CA (ZIP 95490 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • HOPLAND, CA (ZIP 95449 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (7 qtrs NC) | 🔒 7 Qtrs Non-Compliance • Unlock → |
| MENDOCINO TRANSIT AUTHORITY FREE PREVIEW (LOW RISK) | 241 PLANT RD, UKIAH, CA 95482 | LOW (25/100) | No Violation Identified (0 qtrs NC) | $0 |
| HUSCH VINEYARDS INC FREE PREVIEW (LOW RISK) | 4400 HIGHWAY 128, PHILO, CA 95466 | LOW (24/100) | No Violation Identified (0 qtrs NC) | $0 |
| GOLDENEYE WINERY FREE PREVIEW (LOW RISK) | 7201 HWY 128, PHILO, CA 95466 | LOW (24/100) | No Violation Identified (0 qtrs NC) | $0 |
| ROUND VALLEY HOPPER LANE SEWER PHASE II FREE PREVIEW (LOW RISK) | HOPPER LANE, MENDOCINO COUNTY ROAD 337F, COVELO, CA 95428 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Mendocino County, California Environmental Due Diligence
How many EPA-regulated environmental sites are in Mendocino County County, California?
Public U.S. EPA records track 98 regulated facilities in Mendocino County County, California (ranking #92 of 136 jurisdictions in CA). Of those, 1 (1.0%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 4 (4.1%) have active non-compliance quarters.
Which ZIP codes and cities in Mendocino County County have the highest regulated facility density?
Within Mendocino County County, the highest concentrations of EPA-tracked facilities are located in ZIP 95445 (Gualala, 31 sites), ZIP 95466 (Philo, 28 sites), ZIP 95429 (Dos Rios, 7 sites), spanning municipal corridors including Gualala (30 sites), Philo (29 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Mendocino County County?
Across Mendocino County County, 9 facilities (9.2% 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 Mendocino County County, CA?
Geologic indoor air screening places Mendocino 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 Mendocino County County, CA?
Federal records track 1 Safe Drinking Water (SDWIS) facilities, 93 Clean Water Act NPDES permits, and 62 impaired water dischargers in Mendocino County County, alongside 4 historical FEMA federal disaster declarations (4 flood/storm events).
Does Mendocino County, CA have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Mendocino County indicates a MODERATE 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.