Nassau County, New York — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Nassau County, NY?
In Nassau County, New York, public U.S. EPA records track 5,644 regulated facilities (#7 of 99 in New York), including 66 (1.2%) High-Risk sites and $6,634,552 in federal penalties. Countywide due diligence also covers 48 Safe Drinking Water (SDWIS) facilities, 371 Clean Water NPDES permits, 4 FEMA Federal Disaster Declarations (4 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).
Nassau County, NY 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Nassau County, NY Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Nassau County
ZIP Codes in Nassau County
Top EPA Regulated Facilities in Nassau County, NY
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 • WANTAGH, NY (ZIP 11793 Sector) | HIGH (83/100) | Significant Violation (6 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • EAST ROCKAWAY, NY (ZIP 11518 Sector) | HIGH (77/100) | Significant Violation (12 qtrs NC) | 🔒 Federal Penalty on File • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • LONG BEACH, NY (ZIP 11561 Sector) | HIGH (76/100) | Significant Violation (5 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • OCEANSIDE, NY (ZIP 11572 Sector) | HIGH (72/100) | Significant Violation (12 qtrs NC) | 🔒 Federal Penalty on File • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • KINGS POINT, NY (ZIP 11024 Sector) | HIGH (71/100) | Significant Violation (2 qtrs NC) | 🔒 Federal Penalty on File • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • OYSTER BAY, NY (ZIP 11771 Sector) | HIGH (70/100) | Significant Violation (2 qtrs NC) | 🔒 2 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • ISLAND PARK, NY (ZIP 11558 Sector) | HIGH (69/100) | Significant Violation (12 qtrs NC) | 🔒 Federal Penalty on File • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • FREEPORT, NY (ZIP 11520 Sector) | HIGH (66/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| NYSDOT BIN 1050490 FREE PREVIEW (LOW RISK) | NORTHERN STATE PKWY WB RTE, ROSLYN HEIGHTS, NY 11577 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| ROOSEVELT UFSD - ROOSEVELT HIGH SCHOOL FREE PREVIEW (LOW RISK) | 240 DENTON PL, ROOSEVELT, NY 11575 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| VERIZON MANHOLE 223 LOG 37782 FREE PREVIEW (LOW RISK) | S FRANKLIN ST & FRONT ST, HEMPSTEAD, NY 11550 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| TOBAY BEACH FREE PREVIEW (LOW RISK) | , , NY | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Nassau County, New York Environmental Due Diligence
How many EPA-regulated environmental sites are in Nassau County, New York?
Public U.S. EPA records track 5,644 regulated facilities in Nassau County, New York (ranking #7 of 99 jurisdictions in NY). Of those, 66 (1.2%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 110 (1.9%) have active non-compliance quarters.
Which ZIP codes and cities in Nassau County have the highest regulated facility density?
Within Nassau County, the highest concentrations of EPA-tracked facilities are located in ZIP 11735 (Farmingdale, 604 sites), ZIP 11801 (Hicksville, 321 sites), ZIP 11590 (Westbury, 303 sites), spanning municipal corridors including Farmingdale (569 sites), Hicksville (328 sites), Westbury (299 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Nassau County?
Across Nassau County, 4,853 facilities (86.0% 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 Nassau County, NY?
Geologic indoor air screening places Nassau 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 Nassau County, NY?
Federal records track 48 Safe Drinking Water (SDWIS) facilities, 371 Clean Water Act NPDES permits, and 140 impaired water dischargers in Nassau County, alongside 4 historical FEMA federal disaster declarations (4 flood/storm events).
Does Nassau County, NY have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Nassau County indicates a LOW shrink-swell risk signal and steel pipe corrosivity rated High. Run a street address scan to unlock the exact parcel soil series, LEP %, and water table depth.