Mono County, California — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Mono County, CA?
In Mono County, California, public U.S. EPA records track 22 regulated facilities (#118 of 136 in California), including 0 (0.0%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 0 Safe Drinking Water (SDWIS) facilities, 21 Clean Water NPDES permits, 3 FEMA Federal Disaster Declarations (3 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Mono 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📊 Mono County, CA Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Mono County
ZIP Codes in Mono County
Top EPA Regulated Facilities in Mono 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 • BRIDGEPORT, CA (ZIP 93517 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • BRIDGEPORT, CA (ZIP 96107 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (2 qtrs NC) | 🔒 2 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • BRIDGEPORT, CA (ZIP 93517 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (3 qtrs NC) | 🔒 3 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • MAMMOTH LAKES, CA (ZIP 93546 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (2 qtrs NC) | 🔒 2 Qtrs Non-Compliance • Unlock → |
| BLACK POINT CINDER MINE FREE PREVIEW (LOW RISK) | US HWY 395, LEE VINING, CA 93546 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| BRYANT FIELD FREE PREVIEW (LOW RISK) | 76 STOCK DRIVE, BRIDGEPORT, CA 93517 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| UNITED STATES PUMICE MILL SITE FREE PREVIEW (LOW RISK) | 141 AIRPORT ROAD, LEE VINING, CA 93541 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| TURNER PROPANE TANK SITE FREE PREVIEW (LOW RISK) | SHERWIN CREEK RD, MAMMOTH LAKES, CA 93546 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • MAMMOTH LAKES, CA (ZIP 93546 Sector) | LOW (15/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • MAMMOTH LAKES, CA (ZIP 93546 Sector) | LOW (13/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • LEE VINING, CA (ZIP 93541 Sector) | LOW (13/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • BRIDGEPORT, CA (ZIP 93517 Sector) | LOW (13/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
Frequently Asked Questions — Mono County, California Environmental Due Diligence
How many EPA-regulated environmental sites are in Mono County County, California?
Public U.S. EPA records track 22 regulated facilities in Mono County County, California (ranking #118 of 136 jurisdictions in CA). Of those, 0 (0.0%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 2 (9.1%) have active non-compliance quarters.
Which ZIP codes and cities in Mono County County have the highest regulated facility density?
Within Mono County County, the highest concentrations of EPA-tracked facilities are located in local postal sectors, spanning municipal corridors including Mono County.
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Mono County County?
Across Mono County County, 1 facilities (4.5% 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 Mono County County, CA?
Geologic indoor air screening places Mono 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 Mono County County, CA?
Federal records track 0 Safe Drinking Water (SDWIS) facilities, 21 Clean Water Act NPDES permits, and 5 impaired water dischargers in Mono County County, alongside 3 historical FEMA federal disaster declarations (3 flood/storm events).
Does Mono County, CA have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Mono 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.