New Castle County, Delaware — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in New Castle County, DE?
In New Castle County, Delaware, public U.S. EPA records track 1,957 regulated facilities (#1 of 6 in Delaware), including 38 (1.9%) High-Risk sites and $13,985,381 in federal penalties. Countywide due diligence also covers 92 Safe Drinking Water (SDWIS) facilities, 86 Clean Water NPDES permits, 1 FEMA Federal Disaster Declarations (1 flood/storm), USDA Soil Foundation Shrink-Swell (MODERATE signal), and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).
New Castle County, DE 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 New Castle County, DE Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)Municipalities in New Castle County
ZIP Codes in New Castle County
Top EPA Regulated Facilities in New Castle County, DE
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 • DELAWARE CITY, DE (ZIP 19706 Sector) | HIGH (98/100) | Significant Violation (11 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • NEW CASTLE, DE (ZIP 19720 Sector) | HIGH (98/100) | Significant Violation (10 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • NEW CASTLE, DE (ZIP 19720 Sector) | HIGH (88/100) | Significant Violation (12 qtrs NC) | 🔒 Federal Penalty on File • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • BEAR, DE (ZIP 19701 Sector) | HIGH (86/100) | Significant Violation (11 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • NEW CASTLE, DE (ZIP 19720 Sector) | HIGH (68/100) | Significant Violation (12 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • WILMINGTON, DE (ZIP 19801 Sector) | HIGH (68/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • NEW CASTLE, DE (ZIP 19720 Sector) | HIGH (66/100) | Significant Violation (11 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • WILMINGTON, DE (ZIP 19801 Sector) | HIGH (66/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| HOPKINS & SONS INC FREE PREVIEW (LOW RISK) | 9 JEFFERSON AVE, ELSMERE, DE 19805 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| BRUCE INDUSTRIAL CO INC FREE PREVIEW (LOW RISK) | 4049 NEW CASTLE AVE, NEW CASTLE, DE 19720 | LOW (15/100) | No Violation Identified (0 qtrs NC) | $0 |
| DELDOT BRIDGE #1-567 - EDGEMOOR ROAD OVER AMTRAK FREE PREVIEW (LOW RISK) | EDGEMOOR ROAD OVER AMTRAK, WILMINGTON, DE 19809 | LOW (15/100) | No Violation Identified (0 qtrs NC) | $0 |
| GREENHILL AUTO SERVICE FREE PREVIEW (LOW RISK) | 600 GREENHILL AVE, WILMINGTON, DE 19805 | LOW (15/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — New Castle County, Delaware Environmental Due Diligence
How many EPA-regulated environmental sites are in New Castle County, Delaware?
Public U.S. EPA records track 1,957 regulated facilities in New Castle County, Delaware (ranking #1 of 6 jurisdictions in DE). Of those, 38 (1.9%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 27 (1.4%) have active non-compliance quarters.
Which ZIP codes and cities in New Castle County have the highest regulated facility density?
Within New Castle County, the highest concentrations of EPA-tracked facilities are located in ZIP 19720 (New Castle, 403 sites), ZIP 19801 (Wilmington, 180 sites), ZIP 19711 (Newark, 170 sites), spanning municipal corridors including Wilmington (776 sites), Newark (450 sites), New Castle (397 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in New Castle County?
Across New Castle County, 1,580 facilities (80.7% 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 Castle County, DE?
Geologic indoor air screening places New Castle 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 New Castle County, DE?
Federal records track 92 Safe Drinking Water (SDWIS) facilities, 86 Clean Water Act NPDES permits, and 46 impaired water dischargers in New Castle County, alongside 1 historical FEMA federal disaster declarations (1 flood/storm events).
Does New Castle County, DE have expansive clay soil or foundation risk?
USDA regional soil engineering screening for New Castle County indicates a MODERATE shrink-swell risk signal and steel pipe corrosivity rated Low. Run a street address scan to unlock the exact parcel soil series, LEP %, and water table depth.