Suffolk County, Connecticut — Flood Zone, Water Quality, Soil Foundation, Radon & EPA Hazards
In Suffolk County, Connecticut, public U.S. EPA records track 1 regulated facilities (#33 of 33 in Connecticut), including 0 (0.0%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 0 Safe Drinking Water (SDWIS) facilities, 0 Clean Water NPDES permits, 7 FEMA Federal Disaster Declarations (6 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).
Suffolk County, CT 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Suffolk County, CT Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 01, 2026)Municipalities in Suffolk County
ZIP Codes in Suffolk County
Top EPA Regulated Facilities in Suffolk County, 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 |
|---|---|---|---|---|
| PATRIOT MARINE FREE PREVIEW (LOW RISK) | 2 POPLAR STREET, NEW HAVEN, CT 06513 | LOW (9/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Suffolk County, Connecticut Environmental Due Diligence
How many EPA-regulated environmental sites are in Suffolk County, Connecticut?
Public U.S. EPA records track 1 regulated facilities in Suffolk County, Connecticut (ranking #33 of 33 jurisdictions in CT). Of those, 0 (0.0%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 0 (0.0%) have active non-compliance quarters.
Which ZIP codes and cities in Suffolk County have the highest regulated facility density?
Within Suffolk County, the highest concentrations of EPA-tracked facilities are located in local postal sectors, spanning municipal corridors including Suffolk.
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Suffolk County?
Across Suffolk County, 0 facilities (0.0% of regulated sites) are registered Resource Conservation and Recovery Act (RCRA) hazardous waste generators or handlers, and 0 industrial sites report toxic chemical releases to the EPA Toxics Release Inventory (TRI).
What is the EPA Radon Zone classification for Suffolk County, CT?
Geologic indoor air screening places Suffolk County in EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L). Counties in EPA Radon Zone 2 have a predicted average indoor radon level between 2.0 and 4.0 pCi/L. Testing basement or ground-floor living areas is recommended during home inspection.
How many drinking water systems (SDWIS), impaired water bodies, and FEMA flood disasters are recorded in Suffolk County, CT?
Federal records track 0 Safe Drinking Water (SDWIS) facilities, 0 Clean Water Act NPDES permits, and 0 impaired water dischargers in Suffolk County, alongside 7 historical FEMA federal disaster declarations (6 flood/storm events).
Does Suffolk County, CT have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Suffolk County indicates a LOW shrink-swell risk signal and steel pipe corrosivity rated Moderate. Run a street address scan to unlock the exact parcel soil series, LEP %, and water table depth.