Contra Costa, California — Property Hazard, Flood Zone, Soil, Water & Market Guide
What Are the Major Property, Flood, Soil & Environmental Risks in Contra Costa, CA?
Public U.S. EPA records track 1 regulated facilities in Contra Costa, California (Contra Costa County), including 0 High-Risk sites (0.0%) and 0 active violators. In addition to industrial waste, Contra Costa properties are screened for Tap Water & Watershed Permits (1 systems), USDA Soil Foundation Shrink-Swell (HIGH signal), 2 County FEMA Disaster Declarations, and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).
Contra Costa, CA 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Contra Costa, CA Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)ZIP Codes in Contra Costa, CA
Highest-Scored EPA Regulated Facilities in Contra Costa, 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 |
|---|---|---|---|---|
| CONTRA COSTA CNTY-AQ PESTICIDES FREE PREVIEW (LOW RISK) | NOT APPLICABLE, CONTRA COSTA, CA 00000 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Contra Costa, California Environmental Risk & Radon
How many EPA-regulated facilities are in Contra Costa, CA?
U.S. EPA records track 1 regulated facilities in Contra Costa, California, including 0 high-risk sites (0.0%), 0 active violators (0.0%), and 0 RCRA hazardous waste handlers (0.0%).
Which ZIP codes in Contra Costa, CA have the most EPA-tracked sites?
Within Contra Costa, regulated facilities are primarily concentrated across local postal codes.
How can I check a specific house or commercial property in Contra Costa, CA?
Enter the exact street address in Contra Costa 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 Contra Costa, CA and how many EPA water permits exist?
In Contra Costa, CA, federal registries track 0 Safe Drinking Water (SDWIS) facilities, 1 Clean Water Act NPDES permits, and 0 impaired water body dischargers.
What is the soil foundation risk and FEMA flood disaster history in Contra Costa, CA?
USDA regional soil screening for Contra Costa indicates a HIGH shrink-swell foundation signal, and Contra Costa County has recorded 2 federal FEMA disaster declarations (2 flood/severe storm declarations). Run an address scan to unlock exact parcel soil LEP %, water table depth, and flood zone.