New Haven County, Connecticut — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in New Haven County, CT?
In New Haven County, Connecticut, public U.S. EPA records track 3,594 regulated facilities (#3 of 16 in Connecticut), including 79 (2.2%) High-Risk sites and $15,442,062 in federal penalties. Countywide due diligence also covers 318 Safe Drinking Water (SDWIS) facilities, 761 Clean Water NPDES permits, 6 FEMA Federal Disaster Declarations (5 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
New Haven 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📊 New Haven County, CT Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)Municipalities in New Haven County
ZIP Codes in New Haven County
Top EPA Regulated Facilities in New Haven 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 |
|---|---|---|---|---|
| 🔒 Locked High-Risk EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • NEW HAVEN, CT (ZIP 06512 Sector) | HIGH (98/100) | Significant Violation (12 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • MERIDEN, CT (ZIP 06451 Sector) | HIGH (89/100) | Significant Violation (10 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • WALLINGFORD, CT (ZIP 06492 Sector) | HIGH (86/100) | Significant Violation (8 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • WEST HAVEN, CT (ZIP 06516 Sector) | HIGH (70/100) | Significant Violation (9 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • MILFORD, CT (ZIP 06461 Sector) | HIGH (69/100) | Significant Violation (12 qtrs NC) | 🔒 Federal Penalty on File • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • NAUGATUCK, CT (ZIP 06770 Sector) | HIGH (69/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • GUILFORD, CT (ZIP 06437 Sector) | HIGH (67/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • CHESHIRE, CT (ZIP 06410 Sector) | HIGH (66/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| NUTMEG TECHNOLOGIES, INC FREE PREVIEW (LOW RISK) | 125 MARKET STREET, NEW HAVEN, CT 06513 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| DOT CT STATE OF FREE PREVIEW (LOW RISK) | METRO NORTH BRIDGES OVER SOUND BEACH, GREENWICH, CT 06831 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| PIERCE CORELL CORP FREE PREVIEW (LOW RISK) | 615 PLAINS RD, MILFORD, CT 06461 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| 54 WESTVILLE AVE FREE PREVIEW (LOW RISK) | 54 WESTVILLE AVE, DANBURY, CT 06810 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — New Haven County, Connecticut Environmental Due Diligence
How many EPA-regulated environmental sites are in New Haven County, Connecticut?
Public U.S. EPA records track 3,594 regulated facilities in New Haven County, Connecticut (ranking #3 of 16 jurisdictions in CT). Of those, 79 (2.2%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 164 (4.6%) have active non-compliance quarters.
Which ZIP codes and cities in New Haven County have the highest regulated facility density?
Within New Haven County, the highest concentrations of EPA-tracked facilities are located in ZIP 06810 (Danbury, 334 sites), ZIP 06492 (Wallingford, 262 sites), ZIP 06460 (Milford, 228 sites), spanning municipal corridors including New Haven (513 sites), Waterbury (449 sites), Danbury (395 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in New Haven County?
Across New Haven County, 2,368 facilities (65.9% 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 Haven County, CT?
Geologic indoor air screening places New Haven 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 Haven County, CT?
Federal records track 318 Safe Drinking Water (SDWIS) facilities, 761 Clean Water Act NPDES permits, and 265 impaired water dischargers in New Haven County, alongside 6 historical FEMA federal disaster declarations (5 flood/storm events).
Does New Haven County, CT have expansive clay soil or foundation risk?
USDA regional soil engineering screening for New Haven 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.