Washington County, Connecticut — Flood Zone, Water Quality, Soil Foundation, Radon & EPA Hazards
In Washington County, Connecticut, public U.S. EPA records track 3 regulated facilities (#17 of 17 in Connecticut), including 0 (0.0%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 3 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).
Washington 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📊 Washington County, CT Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 01, 2026)Municipalities in Washington County
ZIP Codes in Washington County
Top EPA Regulated Facilities in Washington 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 |
|---|---|---|---|---|
| OAK HARBOR VILLAGE, LLC.-TREATMENT PLANT WELL 3 FREE PREVIEW (LOW RISK) | PO BOX 194, CANTERBURY, CT 06331 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| BRICK AND GRILLS RESTAURANT-TREATMENT PLANT WELL 1 FREE PREVIEW (LOW RISK) | 556 PENDLETON HILL ROAD, NORTH STONINGTON, CT, CT 06359 | LOW (10/100) | No Violation Identified (0 qtrs NC) | $0 |
| 216 MAIN STREET LLC AN0-TREATMENT PLANT WELL FREE PREVIEW (LOW RISK) | 14 SYCAMORE WAY, BRANFORD, CT 06405 | LOW (9/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Washington County, Connecticut Environmental Due Diligence
How many EPA-regulated environmental sites are in Washington County, Connecticut?
Public U.S. EPA records track 3 regulated facilities in Washington County, Connecticut (ranking #17 of 17 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 Washington County have the highest regulated facility density?
Within Washington County, the highest concentrations of EPA-tracked facilities are located in local postal sectors, spanning municipal corridors including North Stonington, Ct (1 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Washington County?
Across Washington 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 Washington County, CT?
Geologic indoor air screening places Washington 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 Washington County, CT?
Federal records track 3 Safe Drinking Water (SDWIS) facilities, 0 Clean Water Act NPDES permits, and 0 impaired water dischargers in Washington County, alongside 7 historical FEMA federal disaster declarations (6 flood/storm events).
Does Washington County, CT have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Washington 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.