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Grayson County, Texas — Property Hazard, Flood Zone, Soil, Water & EPA Guide

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What Are the Flood, Soil Foundation & EPA Risks in Grayson County, TX?

In Grayson County, Texas, public U.S. EPA records track 321 regulated facilities (#85 of 469 in Texas), including 4 (1.2%) High-Risk sites and $573,769 in federal penalties. Countywide due diligence also covers 0 Safe Drinking Water (SDWIS) facilities, 311 Clean Water NPDES permits, 2 FEMA Federal Disaster Declarations (0 flood/storm), USDA Soil Foundation Shrink-Swell (HIGH signal), and EPA Zone 3 — Low Potential (< 2.0 pCi/L).

Total EPA Sites (#85/469)
321
High-Risk (1.2% vs 1.6% State)
4
Active Violators (0.9%)
3
Drinking & Clean Water
311
Federal Penalties
$573,769

Grayson County, TX 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 (0 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: HIGH • Pipe Corrosion: High
🔒 Exact USDA Soil Series, Linear Extensibility (LEP %) & Water Table Depth (ft) Locked
Unlock Parcel Soil Test →
🚰 Tap Water (SDWIS) & PFAS Check
0 SDWIS Systems • 311 NPDES Permits
🔒 10 Impaired Water (303d) & 8 Violation Dockets Locked
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☢️ EPA Radon & Karst Sinkhole
EPA Zone 3 — Low Potential (< 2.0 pCi/L)
Non-Karst Coastal / Alluvial Clay Formation (Low Sinkhole Risk; Primary Factor is Clay Shrink-Swell)
🔒 0.25-Mi Vapor Intrusion Buffer Locked

📊 Grayson County, TX Statistical Risk Graphs & Multi-Hazard Telemetry

SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)
1. County Regulatory & Water Program Mix
RCRA Hazardous Waste Generators 0 (0.0%)
Clean Water (NPDES) & Drinking Water (SDWIS) 311 (96.9%)
Active EPA Non-Compliance Dockets 3 (0.9%)
High-Risk Enforcement Facilities 4 (1.2%)
2. FEMA NRI & USGS Hazard Index (1–10) Relatively Low (80.3/100)
🌊 Flood Exposure 5/10 • Moderate Hazard
🔥 Wildfire Hazard 3/10 • 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
Grayson County High-Risk % 1.2%
Texas (TX) Statewide Avg 1.6%
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 Grayson County, TX

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 • GUNTER, TX (ZIP 75058 Sector) HIGH (64/100) Significant Violation (5 qtrs NC) 🔒 5 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #2 🔒 Exact Street & Parcel Redacted • GUNTER, TX (ZIP 75058 Sector) MODERATE (36/100) Resolved / Historical Non-Compliance (1 qtrs NC) 🔒 Federal Penalty on File • Unlock →
🔒 Locked Regulated EPA Enforcement Record #3 🔒 Exact Street & Parcel Redacted • SHERMAN, TX (ZIP 75092 Sector) MODERATE (30/100) No Violation Identified (0 qtrs NC) 🔒 $100,000+ Federal Fine • Unlock →
🔒 Locked Regulated EPA Enforcement Record #4 🔒 Exact Street & Parcel Redacted • VAN ALSTYNE ETJ, TX (ZIP 75495 Sector) MODERATE (30/100) No Violation Identified (0 qtrs NC) 🔒 $10,000+ Federal Fine • Unlock →
🔒 Locked Regulated EPA Enforcement Record #5 🔒 Exact Street & Parcel Redacted • POTTSBORO, TX (ZIP 75076 Sector) MODERATE (30/100) Resolved / Historical Non-Compliance (1 qtrs NC) 🔒 Federal Penalty on File • Unlock →
🔒 Locked Regulated EPA Enforcement Record #6 🔒 Exact Street & Parcel Redacted • GUNTER, TX (ZIP 75058 Sector) MODERATE (30/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #7 🔒 Exact Street & Parcel Redacted • DENISON, TX (ZIP 75020 Sector) MODERATE (30/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #8 🔒 Exact Street & Parcel Redacted • WHITESBORO, TX (ZIP 76273 Sector) MODERATE (30/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
DDA INDUSTRIAL PARK FREE PREVIEW (LOW RISK) 5821 US HIGHWAY 69, DENISON, TX 75021 LOW (18/100) No Violation Identified (0 qtrs NC) $0
THREE OAKS SUBDIVISION FREE PREVIEW (LOW RISK) EAST OF THE INTERSECTION OF SHERMAN STREET AND BRA, SHERMAN, TX 75090 LOW (18/100) No Violation Identified (0 qtrs NC) $0
LAKE TEXOMA RAW WATER INTAKE FREE PREVIEW (LOW RISK) NORTHWEST OF RESERVOIR DRIVE & RANDELL LAKE ROAD, DENISON, TX 75020 LOW (17/100) No Violation Identified (0 qtrs NC) $0
ROLLIN SIDING FREE PREVIEW (LOW RISK) LOCATED SOUTHEAST OF THE INTERSECTION ON US 75 AND, SHERMAN, TX 75090 LOW (17/100) No Violation Identified (0 qtrs NC) $0
🔒 + 309 Additional Regulated & Enforcement Records in Grayson County Redacted from Public Directory Run 1-Mile Property Scan to Unlock All Records →

Frequently Asked Questions — Grayson County, Texas Environmental Due Diligence

How many EPA-regulated environmental sites are in Grayson County County, Texas?

Public U.S. EPA records track 321 regulated facilities in Grayson County County, Texas (ranking #85 of 469 jurisdictions in TX). Of those, 4 (1.2%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 3 (0.9%) have active non-compliance quarters.

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

Within Grayson County County, the highest concentrations of EPA-tracked facilities are located in ZIP 75090 (Sherman, 231 sites), ZIP 75092 (Sherman, 201 sites), ZIP 75495 (Van Alstyne, 155 sites), spanning municipal corridors including Sherman (432 sites), Pottsboro (37 sites), Whitesboro (31 sites).

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

Across Grayson County County, 0 facilities (0.0% 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 Grayson County County, TX?

Geologic indoor air screening places Grayson County County in EPA Zone 3 — Low Potential (< 2.0 pCi/L). Counties in EPA Radon Zone 3 have a predicted average indoor radon level below 2.0 pCi/L, indicating lower regional geologic radon risk.

How many drinking water systems (SDWIS), impaired water bodies, and FEMA flood disasters are recorded in Grayson County County, TX?

Federal records track 0 Safe Drinking Water (SDWIS) facilities, 311 Clean Water Act NPDES permits, and 10 impaired water dischargers in Grayson County County, alongside 2 historical FEMA federal disaster declarations (0 flood/storm events).

Does Grayson County, TX have expansive clay soil or foundation risk?

USDA regional soil engineering screening for Grayson County indicates a HIGH 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.

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