Saint Helena, California — Property Hazard, Flood Zone, Soil, Water & Market Guide
What Are the Major Property, Flood, Soil & Environmental Risks in Saint Helena, CA?
Public U.S. EPA records track 385 regulated facilities in Saint Helena, California (Napa County), including 2 High-Risk sites (0.5%) and 3 active violators. In addition to industrial waste, Saint Helena properties are screened for Tap Water & Watershed Permits (148 systems), USDA Soil Foundation Shrink-Swell (LOW signal), 4 County FEMA Disaster Declarations, and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).
Saint Helena, CA 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Saint Helena, CA Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)ZIP Codes in Saint Helena, CA
Highest-Scored EPA Regulated Facilities in Saint Helena, 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 High-Risk EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • SAINT HELENA, CA (ZIP 94574 Sector) | HIGH (75/100) | Significant Violation (12 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • SAINT HELENA, CA (ZIP 94574 Sector) | HIGH (66/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • SAINT HELENA, CA (ZIP 00000 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • SAINT HELENA, CA (ZIP 94574 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • SAINT HELENA, CA (ZIP 94574 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • SAINT HELENA, CA (ZIP 94574 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • SAINT HELENA, CA (ZIP 94574 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • SAINT HELENA, CA (ZIP 94574 Sector) | MODERATE (33/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| DUCKHORN WINE COMPANY DBA DUCKHORN ESTATE FREE PREVIEW (LOW RISK) | 1000 LODI LN, SAINT HELENA, CA 94574 | LOW (24/100) | No Violation Identified (0 qtrs NC) | $0 |
| MARKHAM VINEYARDS (WINERY) FREE PREVIEW (LOW RISK) | 2812 ST HELENA HWY, SAINT HELENA, CA 94574 | LOW (24/100) | No Violation Identified (0 qtrs NC) | $0 |
| OVID WINERY FREE PREVIEW (LOW RISK) | 255 LONG RANCH ROAD, SAINT HELENA, CA 94574 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| LOUIS M MARTINI WINERY FREE PREVIEW (LOW RISK) | 254 ST HELENA HWY S, SAINT HELENA, CA 94574 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Saint Helena, California Environmental Risk & Radon
How many EPA-regulated facilities are in Saint Helena, CA?
U.S. EPA records track 385 regulated facilities in Saint Helena, California, including 2 high-risk sites (0.5%), 3 active violators (0.8%), and 253 RCRA hazardous waste handlers (65.7%).
Which ZIP codes in Saint Helena, CA have the most EPA-tracked sites?
Within Saint Helena, regulated facilities are primarily concentrated across ZIP 94574 (432 sites), ZIP 95474 (3 sites).
How can I check a specific house or commercial property in Saint Helena, CA?
Enter the exact street address in Saint Helena 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 Saint Helena, CA and how many EPA water permits exist?
In Saint Helena, CA, federal registries track 1 Safe Drinking Water (SDWIS) facilities, 147 Clean Water Act NPDES permits, and 36 impaired water body dischargers.
What is the soil foundation risk and FEMA flood disaster history in Saint Helena, CA?
USDA regional soil screening for Saint Helena indicates a LOW shrink-swell foundation signal, and Napa County has recorded 4 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.