ZIP 94596 (Walnut Creek, CA) — Flood Zone, Water Quality, Soil Foundation, Radon & EPA Hazards
ZIP code 94596 in Walnut Creek, California (Contra Costa County) has 883 EPA-tracked facilities, including 1 High-Risk sites (0.1%), 3 active violators, and $0 in federal penalties. Beyond industrial pollution, properties in ZIP 94596 are screened across 2 historical Contra Costa County FEMA disasters, USDA Soil Foundation Shrink-Swell (HIGH signal), Tap Water & Watershed Permits (27), and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).
ZIP 94596 (Walnut Creek, CA) 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 ZIP 94596 (Walnut Creek, CA) Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 02, 2026)ZIP 94596 Sector Screening Map (High-Risk Pin Coordinates Locked)
Exact street pins for 1 High-Risk and 3 Active Violation sites are redacted on public directory maps.
Regulated EPA Facilities in ZIP 94596 (Walnut Creek, 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 Score (0–100) | Compliance Status | Enforcement / Unlock |
|---|---|---|---|---|
| 🔒 Locked Regulated EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • WALNUT CREEK, CA (ZIP 94596 Sector) | MODERATE (45/100) | Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • WALNUT CREEK, CA (ZIP 94596 Sector) | MODERATE (35/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • WALNUT CREEK, CA (ZIP 94596 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • WALNUT CREEK, CA (ZIP 94596 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • WALNUT CREEK, CA (ZIP 94596 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • WALNUT CREEK, CA (ZIP 94596 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • WALNUT CREEK, CA (ZIP 94596 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • WALNUT CREEK, CA (ZIP 94596 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| WALNUT CREEK TRANSMISSION INC FREE PREVIEW (LOW RISK) | 2040 MAIN ST N #1, WALNUT CREEK, CA 94596 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| OA WALNUT CREEK LLC FREE PREVIEW (LOW RISK) | 1655 N MAIN ST, WALNUT CREEK, CA 94596 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| PRICE CARS SRIN LLC DBA WALNUT CREEK TOYOTA FREE PREVIEW (LOW RISK) | 2100 NORTH BROADWAY, WALNUT CREEK, CA 94596 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| W.C.O.A, LLC./ HALL EQUITIES GROUP FREE PREVIEW (LOW RISK) | 2405 SHADELANDS DRIVE, WALNUT CREEK, CA 94596 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — ZIP 94596 (Walnut Creek, CA) EPA Dataset & Radon
DATASET: U.S. EPA ECHO • FRS • RCRAInfo • TRI (November 02, 2026)How many EPA-tracked environmental sites are in ZIP code 94596 (Walnut Creek, CA)?
ZIP code 94596 (Walnut Creek, CA) contains 883 EPA-tracked facilities, of which 1 (0.1%) are classified in the High-Risk tier, 3 (0.3%) have active compliance violations, and 852 (96.5%) handle RCRA hazardous waste.
How does ZIP 94596 compare to Contra Costa County and California averages?
In ZIP 94596, 0.1% of regulated sites are rated High Risk, compared to 0.3% across Contra Costa County and 0.3% statewide in California.
What is the EPA Radon Zone and ASTM Phase I screening radius for ZIP 94596?
Geologic screening places ZIP 94596 in EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L). Property buyers should screen a 0.25-mile immediate buffer for vapor-intrusion sources and a 1.0-mile radius for CERCLA/RCRA sites.
Is ZIP 94596 (Walnut Creek, CA) in a FEMA flood zone and what is the flood disaster history?
Contra Costa County has recorded 2 historical FEMA federal disaster declarations (2 flood, hurricane, or severe storm declarations). Run a street address scan in ZIP 94596 to unlock the exact parcel FEMA flood zone (AE / VE / X) and mandatory flood insurance status.
Does ZIP 94596 have expansive clay soil, foundation problems, or drinking water violations?
USDA regional soil screening for ZIP 94596 indicates a HIGH shrink-swell risk signal. Within ZIP 94596, federal registries track 4 SDWIS drinking water facilities, 23 Clean Water NPDES permits, and 14 impaired water body dischargers. Unlock a full property report for exact soil LEP %, water table depth, and utility violation dockets.