Darien, Connecticut — Property Hazard, Flood Zone, Soil, Water & Market Guide
What Are the Major Property, Flood, Soil & Environmental Risks in Darien, CT?
Public U.S. EPA records track 64 regulated facilities in Darien, Connecticut (Fairfield County), including 1 High-Risk sites (1.6%) and 1 active violators. In addition to industrial waste, Darien properties are screened for Tap Water & Watershed Permits (7 systems), USDA Soil Foundation Shrink-Swell (LOW signal), 5 County FEMA Disaster Declarations, and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Darien, CT 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Darien, CT Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)ZIP Codes in Darien, CT
Highest-Scored EPA Regulated Facilities in Darien, CT
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 • DARIEN, CT (ZIP 06820 Sector) | HIGH (64/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • DARIEN, CT (ZIP 06820 Sector) | MODERATE (33/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • DARIEN, CT (ZIP 06820 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • DARIEN, CT (ZIP 06820 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • DARIEN, CT (ZIP 06820 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • DARIEN, CT (ZIP 06820 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • DARIEN, CT (ZIP 06820 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • DARIEN, CT (ZIP 06820 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| LAND ROVER DARIEN FREE PREVIEW (LOW RISK) | 1335 POST RD, DARIEN, CT 06820 | LOW (20/100) | No Violation Identified (0 qtrs NC) | $0 |
| DARIEN MAINTENANCE & REPAIR FACILITY FREE PREVIEW (LOW RISK) | 65 BROOKSIDE DR, DARIEN, CT 06820 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| DARIEN LAUNDERETTE FREE PREVIEW (LOW RISK) | 1086 POST RD, DARIEN, CT 06820 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| DARIEN AUTO BODY FREE PREVIEW (LOW RISK) | 159 WEST AVE, DARIEN, CT 06820 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Darien, Connecticut Environmental Risk & Radon
How many EPA-regulated facilities are in Darien, CT?
U.S. EPA records track 64 regulated facilities in Darien, Connecticut, including 1 high-risk sites (1.6%), 1 active violators (1.6%), and 48 RCRA hazardous waste handlers (75.0%).
Which ZIP codes in Darien, CT have the most EPA-tracked sites?
Within Darien, regulated facilities are primarily concentrated across ZIP 06820 (66 sites), ZIP 06802 (1 sites).
How can I check a specific house or commercial property in Darien, CT?
Enter the exact street address in Darien 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 Darien, CT and how many EPA water permits exist?
In Darien, CT, federal registries track 1 Safe Drinking Water (SDWIS) facilities, 6 Clean Water Act NPDES permits, and 1 impaired water body dischargers.
What is the soil foundation risk and FEMA flood disaster history in Darien, CT?
USDA regional soil screening for Darien indicates a LOW shrink-swell foundation signal, and Fairfield County has recorded 5 federal FEMA disaster declarations (5 flood/severe storm declarations). Run an address scan to unlock exact parcel soil LEP %, water table depth, and flood zone.