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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 1,519 regulated facilities (#4 of 16 in Connecticut), including 22 (1.4%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 485 Safe Drinking Water (SDWIS) facilities, 314 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 (#4/16)
1,519
High-Risk (1.4% vs 1.4% State)
22
Active Violators (9.5%)
145
Drinking & Clean Water
799
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
485 SDWIS Systems • 314 NPDES Permits
🔒 98 Impaired Water (303d) & 221 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 718 (47.3%)
Clean Water (NPDES) & Drinking Water (SDWIS) 799 (52.6%)
Active EPA Non-Compliance Dockets 145 (9.5%)
High-Risk Enforcement Facilities 22 (1.4%)
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 % 1.4%
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.
🔒 Scan a Property Address in New London County →

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 • GROTON, CT (ZIP 06340 Sector) HIGH (70/100) Significant Violation (12 qtrs NC) 🔒 12 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #2 🔒 Exact Street & Parcel Redacted • GROTON, CT (ZIP 06340 Sector) HIGH (65/100) Significant Violation (7 qtrs NC) 🔒 7 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #3 🔒 Exact Street & Parcel Redacted • MONTVILLE (UNCASVILLE), CT (ZIP 06382 Sector) HIGH (64/100) Significant Violation (10 qtrs NC) 🔒 10 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #4 🔒 Exact Street & Parcel Redacted • NEW LONDON, CT (ZIP 06320 Sector) HIGH (64/100) Significant Violation (4 qtrs NC) 🔒 4 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #5 🔒 Exact Street & Parcel Redacted • GROTON, CT (ZIP 06340 Sector) HIGH (64/100) Significant Violation (9 qtrs NC) 🔒 9 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #6 🔒 Exact Street & Parcel Redacted • LISBON, CT (ZIP 06351 Sector) HIGH (64/100) Significant Violation (12 qtrs NC) 🔒 12 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #7 🔒 Exact Street & Parcel Redacted • NORTH STONINGTON, CT (ZIP 06359 Sector) HIGH (64/100) Significant Violation (11 qtrs NC) 🔒 11 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #8 🔒 Exact Street & Parcel Redacted • NORWICH, CT (ZIP 06360 Sector) HIGH (64/100) Significant Violation (11 qtrs NC) 🔒 11 Qtrs Non-Compliance • Unlock →
INTERNATIONAL WIRE WYRE WYND FACILITY (CLOSED) FREE PREVIEW (LOW RISK) 77 ANTHONY ST., JEWETT CITY, CT 06351 LOW (25/100) No Violation Identified (0 qtrs NC) $0
TOWN OF WATERFORD WATER DEPT CONT# SR1964521 15 ROPE FERRY RD FREE PREVIEW (LOW RISK) 45 FARGO RD, WATERFORD, CT 06385 LOW (16/100) No Violation Identified (0 qtrs NC) $0
CT DOT FREE PREVIEW (LOW RISK) I 395 OVER OTROBANDO AVE, NORWICH, CT 06360 LOW (16/100) No Violation Identified (0 qtrs NC) $0
USCGC REDWOOD WLM 685 FREE PREVIEW (LOW RISK) 150 BANK ST, NEW LONDON, CT 06320 LOW (16/100) No Violation Identified (0 qtrs NC) $0
🔒 + 1,507 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, Connecticut?

Public U.S. EPA records track 1,519 regulated facilities in New London County, Connecticut (ranking #4 of 16 jurisdictions in CT). Of those, 22 (1.4%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 145 (9.5%) have active non-compliance quarters.

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

Within New London County, the highest concentrations of EPA-tracked facilities are located in ZIP 06360 (Norwich, 164 sites), ZIP 06320 (New London, 135 sites), ZIP 06340 (Groton, 133 sites), spanning municipal corridors including West Hartford (175 sites), Norwich (165 sites), New London (137 sites).

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

Across New London County, 718 facilities (47.3% 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, CT?

Geologic indoor air screening places New London 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, CT?

Federal records track 485 Safe Drinking Water (SDWIS) facilities, 314 Clean Water Act NPDES permits, and 98 impaired water dischargers in New London 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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