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New London County, Connecticut — Property Hazard, Flood Zone, Soil, Water & EPA Guide

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What Are the Flood, Soil Foundation & EPA Risks in New London County, CT?

In New London County, Connecticut, public U.S. EPA records track 102 regulated facilities (#12 of 16 in Connecticut), including 1 (1.0%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 0 Safe Drinking Water (SDWIS) facilities, 90 Clean Water NPDES permits, 4 FEMA Federal Disaster Declarations (4 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).

Total EPA Sites (#12/16)
102
High-Risk (1.0% vs 1.4% State)
1
Active Violators (2.9%)
3
Drinking & Clean Water
90
Federal Penalties
$0

New London 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
🌊 Flood Zone & FEMA Disaster History
4 County FEMA Declarations (4 Flood/Storm)
🔒 Exact Parcel Flood Zone (AE / VE / X) & SFHA Insurance Requirement Locked
Check Property Flood Zone →
🪨 USDA Soil, Foundation & Water Table
Shrink-Swell Risk Signal: LOW • Pipe Corrosion: Moderate
🔒 Exact USDA Soil Series, Linear Extensibility (LEP %) & Water Table Depth (ft) Locked
Unlock Parcel Soil Test →
🚰 Tap Water (SDWIS) & PFAS Check
0 SDWIS Systems • 90 NPDES Permits
🔒 27 Impaired Water (303d) & 3 Violation Dockets Locked
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☢️ EPA Radon & Karst Sinkhole
EPA Zone 1 — High Potential (> 4.0 pCi/L)
Low / Non-Karst Bedrock & Alluvial Formation
🔒 0.25-Mi Vapor Intrusion Buffer Locked

📊 New London County, CT Statistical Risk Graphs & Multi-Hazard Telemetry

SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)
1. County Regulatory & Water Program Mix
RCRA Hazardous Waste Generators 0 (0.0%)
Clean Water (NPDES) & Drinking Water (SDWIS) 90 (88.2%)
Active EPA Non-Compliance Dockets 3 (2.9%)
High-Risk Enforcement Facilities 1 (1.0%)
2. FEMA NRI & USGS Hazard Index (1–10) Relatively High (97.4/100)
🌊 Flood Exposure 7/10 • High Hazard
🔥 Wildfire Hazard 1/10 • Very Low Hazard
☀️ Extreme Heat 5/10 • Moderate Hazard
🌪️ Severe Wind / Storm 7/10 • High Hazard
🫨 USGS Earthquake 2/10 • Low Seismic Hazard
3. County vs. State & National Benchmark
New London County High-Risk % 1.0%
Connecticut (CT) Statewide Avg 1.4%
U.S. National EPA Baseline 3.6%
Unlock Street-Level Dossier: Full report reveals unredacted facility names, distances in feet, exact USDA soil LEP %, water table depth, and parcel flood zone.
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Top EPA Regulated Facilities in New London 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).

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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 • UNCASVILLE, CT (ZIP 06382 Sector) HIGH (64/100) Significant Violation (8 qtrs NC) 🔒 8 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #2 🔒 Exact Street & Parcel Redacted • GALES FERRY, CT (ZIP 06335 Sector) MODERATE (30/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #3 🔒 Exact Street & Parcel Redacted • JEWETT CITY, CT (ZIP 06351 Sector) MODERATE (30/100) Violation Identified (1 qtrs NC) 🔒 1 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #4 🔒 Exact Street & Parcel Redacted • GROTON, CT (ZIP 06340 Sector) MODERATE (30/100) Resolved / Historical Non-Compliance (4 qtrs NC) 🔒 4 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #5 🔒 Exact Street & Parcel Redacted • NORWICH, CT (ZIP 06360 Sector) MODERATE (30/100) Resolved / Historical Non-Compliance (1 qtrs NC) 🔒 1 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #6 🔒 Exact Street & Parcel Redacted • LISBON, CT (ZIP 06351 Sector) MODERATE (30/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #7 🔒 Exact Street & Parcel Redacted • NORWICH, CT (ZIP 06360 Sector) MODERATE (30/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
DW TRANSPORT & LEASING, INC. FREE PREVIEW (LOW RISK) 38 PEQUOT RD, MONTVILLE, CT 06382 LOW (18/100) No Violation Identified (0 qtrs NC) $0
STONINGTON ON THE RIVER DOCKOMINIUMS FREE PREVIEW (LOW RISK) 257 RIVER RD, PAWCATUCK, CT 06379 LOW (18/100) No Violation Identified (0 qtrs NC) $0
GROTON MIDDLE SCHOOL FREE PREVIEW (LOW RISK) 250 BRANDEGEE AVENUE, GROTON, CT 06340 LOW (18/100) No Violation Identified (0 qtrs NC) $0
HILLANDALE FARMS FEED MILL FREE PREVIEW (LOW RISK) 39 MURPHY ROAD, NORTH FRANKLIN, CT 06254 LOW (18/100) No Violation Identified (0 qtrs NC) $0
🔒 Locked Regulated EPA Enforcement Record #8 🔒 Exact Street & Parcel Redacted • WATERFORD, CT (ZIP 06375 Sector) LOW (18/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 + 90 Additional Regulated & Enforcement Records in New London County Redacted from Public Directory Run 1-Mile Property Scan to Unlock All Records →

Frequently Asked Questions — New London County, Connecticut Environmental Due Diligence

How many EPA-regulated environmental sites are in New London County County, Connecticut?

Public U.S. EPA records track 102 regulated facilities in New London County County, Connecticut (ranking #12 of 16 jurisdictions in CT). Of those, 1 (1.0%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 3 (2.9%) have active non-compliance quarters.

Which ZIP codes and cities in New London County County have the highest regulated facility density?

Within New London County County, the highest concentrations of EPA-tracked facilities are located in ZIP 06355 (Stonington, 48 sites), ZIP 06333 (East Lyme, 39 sites), ZIP 06365 (Preston, 29 sites), spanning municipal corridors including Stonington (47 sites), Preston (29 sites), Oakdale (17 sites).

How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in New London County County?

Across New London County 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 New London County County, CT?

Geologic indoor air screening places New London County County in EPA Zone 1 — High Potential (> 4.0 pCi/L). Counties in EPA Radon Zone 1 have a predicted average indoor radon screening level greater than 4.0 pCi/L (the EPA action threshold). Short-term or continuous indoor radon testing is strongly recommended prior to closing.

How many drinking water systems (SDWIS), impaired water bodies, and FEMA flood disasters are recorded in New London County County, CT?

Federal records track 0 Safe Drinking Water (SDWIS) facilities, 90 Clean Water Act NPDES permits, and 27 impaired water dischargers in New London County County, alongside 4 historical FEMA federal disaster declarations (4 flood/storm events).

Does New London County, CT have expansive clay soil or foundation risk?

USDA regional soil engineering screening for New London 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.

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