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13-SECTION COUNTY PROPERTY, MARKET, FLOOD & HAZARD HUB • CT

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

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

In Tolland County, Connecticut, public U.S. EPA records track 779 regulated facilities (#8 of 16 in Connecticut), including 16 (2.1%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 370 Safe Drinking Water (SDWIS) facilities, 129 Clean Water NPDES permits, 2 FEMA Federal Disaster Declarations (2 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).

Total EPA Sites (#8/16)
779
High-Risk (2.1% vs 1.4% State)
16
Active Violators (14.2%)
111
Drinking & Clean Water
499
Federal Penalties
$0

Tolland 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
2 County FEMA Declarations (2 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
370 SDWIS Systems • 129 NPDES Permits
🔒 25 Impaired Water (303d) & 141 Violation Dockets Locked
Unlock Utility Violation Log →
☢️ EPA Radon & Karst Sinkhole
EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L)
Low / Non-Karst Bedrock & Alluvial Formation
🔒 0.25-Mi Vapor Intrusion Buffer Locked

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

SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 02, 2026)
1. County Regulatory & Water Program Mix
RCRA Hazardous Waste Generators 271 (34.8%)
Clean Water (NPDES) & Drinking Water (SDWIS) 499 (64.1%)
Active EPA Non-Compliance Dockets 111 (14.2%)
High-Risk Enforcement Facilities 16 (2.1%)
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
Tolland County High-Risk % 2.1%
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 Tolland 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 • ROCKVILLE, CT (ZIP 06066 Sector) HIGH (67/100) Significant Violation (8 qtrs NC) 🔒 8 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #2 🔒 Exact Street & Parcel Redacted • STAFFORD SPRINGS, CT (ZIP 06076 Sector) HIGH (67/100) Significant Violation (12 qtrs NC) 🔒 12 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #3 🔒 Exact Street & Parcel Redacted • WILLINGTON, CT (ZIP 06279 Sector) HIGH (64/100) Significant Violation (11 qtrs NC) 🔒 11 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #4 🔒 Exact Street & Parcel Redacted • WILLINGTON, CT (ZIP 06279 Sector) HIGH (64/100) Significant Violation (8 qtrs NC) 🔒 8 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #5 🔒 Exact Street & Parcel Redacted • MANSFIELD, CT (ZIP 06268 Sector) HIGH (64/100) Significant Violation (11 qtrs NC) 🔒 11 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #6 🔒 Exact Street & Parcel Redacted • WILLINGTON, CT (ZIP 06279 Sector) HIGH (64/100) Significant Violation (11 qtrs NC) 🔒 11 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #7 🔒 Exact Street & Parcel Redacted • WILLINGTON, CT (ZIP 06279 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 • BOLTON, CT (ZIP 06043 Sector) HIGH (64/100) Significant Violation (11 qtrs NC) 🔒 11 Qtrs Non-Compliance • Unlock →
MANSFIELD NON-PROFIT HOUSING DEVELOPMENT CORP FREE PREVIEW (LOW RISK) 309 MAPLE RD, STORRS MANSFIELD, CT 06268 LOW (16/100) No Violation Identified (0 qtrs NC) $0
UNIVERSITY OF CONNECTICUT FREE PREVIEW (LOW RISK) 9 N HILLSIDE RD, STORRS, CT 06269 LOW (16/100) No Violation Identified (0 qtrs NC) $0
156 WILLINGTON RD FREE PREVIEW (LOW RISK) 156 WILLINGTON RD, WILLINGTON, CT 06279 LOW (16/100) No Violation Identified (0 qtrs NC) $0
FRESH COAT INDUSTRIAL FREE PREVIEW (LOW RISK) 27 QUALITY AVE, SOMERSVILLE, CT 06072 LOW (16/100) No Violation Identified (0 qtrs NC) $0
🔒 + 767 Additional Regulated & Enforcement Records in Tolland County Redacted from Public Directory Run 1-Mile Property Scan to Unlock All Records →

Frequently Asked Questions — Tolland County, Connecticut Environmental Due Diligence

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

Public U.S. EPA records track 779 regulated facilities in Tolland County, Connecticut (ranking #8 of 16 jurisdictions in CT). Of those, 16 (2.1%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 111 (14.2%) have active non-compliance quarters.

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

Within Tolland County, the highest concentrations of EPA-tracked facilities are located in ZIP 06066 (Vernon, 109 sites), ZIP 06029 (Ellington, 52 sites), ZIP 06268 (Storrs Mansfield, 48 sites), spanning municipal corridors including Vernon (58 sites), Ellington (52 sites), Willington (48 sites).

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

Across Tolland County, 271 facilities (34.8% 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 Tolland County, CT?

Geologic indoor air screening places Tolland 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 Tolland County, CT?

Federal records track 370 Safe Drinking Water (SDWIS) facilities, 129 Clean Water Act NPDES permits, and 25 impaired water dischargers in Tolland County, alongside 2 historical FEMA federal disaster declarations (2 flood/storm events).

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

USDA regional soil engineering screening for Tolland 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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