Yosemite Valley, California — Property Hazard, Flood Zone, Soil, Water & Market Guide
What Are the Major Property, Flood, Soil & Environmental Risks in Yosemite Valley, CA?
Public U.S. EPA records track 1 regulated facilities in Yosemite Valley, California (Mariposa County), including 0 High-Risk sites (0.0%) and 0 active violators. In addition to industrial waste, Yosemite Valley properties are screened for Tap Water & Watershed Permits (0 systems), USDA Soil Foundation Shrink-Swell (MODERATE signal), 6 County FEMA Disaster Declarations, and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Yosemite Valley, CA 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Yosemite Valley, CA Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)ZIP Codes in Yosemite Valley, CA
Highest-Scored EPA Regulated Facilities in Yosemite Valley, 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 |
|---|---|---|---|---|
| MARIPOSA COUNTY UNIFIED SCHOOL DISTRICT FREE PREVIEW (LOW RISK) | 9009 LOST ARROW ROAD, YOSEMITE VALLEY, CA 95389 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Yosemite Valley, California Environmental Risk & Radon
How many EPA-regulated facilities are in Yosemite Valley, CA?
U.S. EPA records track 1 regulated facilities in Yosemite Valley, California, including 0 high-risk sites (0.0%), 0 active violators (0.0%), and 1 RCRA hazardous waste handlers (100.0%).
Which ZIP codes in Yosemite Valley, CA have the most EPA-tracked sites?
Within Yosemite Valley, regulated facilities are primarily concentrated across local postal codes.
How can I check a specific house or commercial property in Yosemite Valley, CA?
Enter the exact street address in Yosemite Valley into the FullPropertyReport radius scanner to screen all EPA ECHO, FRS, RCRA, TRI, USDA soil foundation shrink-swell, drinking water (SDWIS), FEMA flood zone, and county radon records within 0.5 to 3.0 miles.
Is tap water safe in Yosemite Valley, CA and how many EPA water permits exist?
In Yosemite Valley, CA, federal registries track 0 Safe Drinking Water (SDWIS) facilities, 0 Clean Water Act NPDES permits, and 0 impaired water body dischargers.
What is the soil foundation risk and FEMA flood disaster history in Yosemite Valley, CA?
USDA regional soil screening for Yosemite Valley indicates a MODERATE shrink-swell foundation signal, and Mariposa County has recorded 6 federal FEMA disaster declarations (4 flood/severe storm declarations). Run an address scan to unlock exact parcel soil LEP %, water table depth, and flood zone.