Nevada County, California — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Nevada County, CA?
In Nevada County, California, public U.S. EPA records track 62 regulated facilities (#98 of 136 in California), including 1 (1.6%) High-Risk sites and $5,300,000 in federal penalties. Countywide due diligence also covers 1 Safe Drinking Water (SDWIS) facilities, 59 Clean Water NPDES permits, 4 FEMA Federal Disaster Declarations (3 flood/storm), USDA Soil Foundation Shrink-Swell (MODERATE signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Nevada 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📊 Nevada County, CA Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)Municipalities in Nevada County
ZIP Codes in Nevada County
Top EPA Regulated Facilities in Nevada 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 • GRASS VALLEY, CA (ZIP 95945 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 • GRASS VALLEY, CA (ZIP 95949 Sector) | MODERATE (31/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • TRUCKEE, CA (ZIP 96161 Sector) | MODERATE (31/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • GRASS VALLEY, CA (ZIP 95945 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 • GRASS VALLEY, CA (ZIP 95945 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • GRASS VALLEY, CA (ZIP 95949 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • TRUCKEE, CA (ZIP 96161 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (3 qtrs NC) | 🔒 3 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • TRUCKEE, CA (ZIP 96161 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (2 qtrs NC) | 🔒 2 Qtrs Non-Compliance • Unlock → |
| KILROYS FREE PREVIEW (LOW RISK) | 12077 STATE HWY 49, GRASS VALLEY, CA 95949 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| WHITTLESEY RECYCLING FREE PREVIEW (LOW RISK) | 13895 WHITTLESEY LN, NEVADA CITY, CA 95959 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| RDJJB INC DBA GRASS VALLEY AUTO TRUCK DIS FREE PREVIEW (LOW RISK) | 647 E MAIN ST, GRASS VALLEY, CA 95945 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| HOBART MILLS MATERIAL PROCESSING FACILITY FREE PREVIEW (LOW RISK) | HOBART MILLS RD AT FIBERBOARD RD, TRUCKEE, CA 96160 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Nevada County, California Environmental Due Diligence
How many EPA-regulated environmental sites are in Nevada County County, California?
Public U.S. EPA records track 62 regulated facilities in Nevada County County, California (ranking #98 of 136 jurisdictions in CA). Of those, 1 (1.6%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 1 (1.6%) have active non-compliance quarters.
Which ZIP codes and cities in Nevada County County have the highest regulated facility density?
Within Nevada County County, the highest concentrations of EPA-tracked facilities are located in ZIP 95960 (North San Juan, 8 sites), ZIP 94986 (Washington, 2 sites), spanning municipal corridors including North San Juan (5 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Nevada County County?
Across Nevada County County, 6 facilities (9.7% 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 Nevada County County, CA?
Geologic indoor air screening places Nevada County County in EPA Zone 1 — High Potential (> 4.0 pCi/L). Counties in EPA Radon Zone 1 have a predicted average indoor radon screening level greater than 4.0 pCi/L (the EPA action threshold). Short-term or continuous indoor radon testing is strongly recommended prior to closing.
How many drinking water systems (SDWIS), impaired water bodies, and FEMA flood disasters are recorded in Nevada County County, CA?
Federal records track 1 Safe Drinking Water (SDWIS) facilities, 59 Clean Water Act NPDES permits, and 8 impaired water dischargers in Nevada County County, alongside 4 historical FEMA federal disaster declarations (3 flood/storm events).
Does Nevada County, CA have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Nevada 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.