Trinity County, California — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Trinity County, CA?
In Trinity County, California, public U.S. EPA records track 248 regulated facilities (#71 of 136 in California), including 5 (2.0%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 54 Safe Drinking Water (SDWIS) facilities, 15 Clean Water NPDES permits, 5 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).
Trinity 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📊 Trinity County, CA Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Trinity County
ZIP Codes in Trinity County
Top EPA Regulated Facilities in Trinity 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 • TRINITY CENTER, CA (ZIP 96091 Sector) | MODERATE (36/100) | Violation Identified (7 qtrs NC) | 🔒 7 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • HAYFORK, CA (ZIP 96041 Sector) | MODERATE (33/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • WEAVERVILLE, CA (ZIP 96093 Sector) | MODERATE (33/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • WEAVERVILLE, CA (ZIP 96093 Sector) | MODERATE (33/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • BURNT RANCH, CA (ZIP 95527 Sector) | MODERATE (32/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • , CA (ZIP Sector) | MODERATE (32/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • HAYFORK, CA (ZIP 96041 Sector) | MODERATE (32/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • WEAVERVILLE, CA (ZIP 96093 Sector) | MODERATE (32/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| PACIFIC GAS & ELECTRIC COMPANY FREE PREVIEW (LOW RISK) | HIGHWAY 36, N. OF MAD RIVER, MAD RIVER, CA 95526 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| CAL FIRE TRINITY RIVER CONSERATION CAMP FREE PREVIEW (LOW RISK) | 3325 PETTIJOHN RD, LEWISTON, CA 96052 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| MSNBT RANCH LLC FREE PREVIEW (LOW RISK) | 680 QUINN LN, HAYFORK, CA 96041 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| MILLER'S TRANSMISSIONS & REPAIRS FREE PREVIEW (LOW RISK) | 180 WASHINGTON ST, WEAVERVILLE, CA 96093 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Trinity County, California Environmental Due Diligence
How many EPA-regulated environmental sites are in Trinity County, California?
Public U.S. EPA records track 248 regulated facilities in Trinity County, California (ranking #71 of 136 jurisdictions in CA). Of those, 5 (2.0%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 14 (5.6%) have active non-compliance quarters.
Which ZIP codes and cities in Trinity County have the highest regulated facility density?
Within Trinity County, the highest concentrations of EPA-tracked facilities are located in ZIP 96093 (Weaverville, 79 sites), ZIP 96041 (Hayfork, 50 sites), ZIP 95526 (Mad River, 48 sites), spanning municipal corridors including Weaverville (81 sites), Hayfork (50 sites), Lewiston (28 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Trinity County?
Across Trinity County, 187 facilities (75.4% 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 Trinity County, CA?
Geologic indoor air screening places Trinity 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 Trinity County, CA?
Federal records track 54 Safe Drinking Water (SDWIS) facilities, 15 Clean Water Act NPDES permits, and 11 impaired water dischargers in Trinity County, alongside 5 historical FEMA federal disaster declarations (3 flood/storm events).
Does Trinity County, CA have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Trinity 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.