Collin County, Arizona — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Collin County, AZ?
In Collin County, Arizona, public U.S. EPA records track 5 regulated facilities (#47 of 47 in Arizona), including 0 (0.0%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 0 Safe Drinking Water (SDWIS) facilities, 5 Clean Water NPDES permits, 22 FEMA Federal Disaster Declarations (6 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 3 — Low Potential (< 2.0 pCi/L).
Collin County, AZ 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Collin County, AZ Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Collin County
ZIP Codes in Collin County
Top EPA Regulated Facilities in Collin County, AZ
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 |
|---|---|---|---|---|
| BUNKER PEAK SUBSTATION, OVERHEAD, AND UNDERGROUND POWER LINES FREE PREVIEW (LOW RISK) | NO ADDRESS ON FILE, UNKNOWN, AZ 85281 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| HT-JCOE SITE PREP FREE PREVIEW (LOW RISK) | NO ADDRESS ON FILE, UNKNOWN, AZ 85027 | LOW (12/100) | No Violation Identified (0 qtrs NC) | $0 |
| MILLER RD & BROADWAY RD INTERSECTION IMPROVEMENTS FREE PREVIEW (LOW RISK) | NO ADDRESS ON FILE, UNKNOWN, AZ 85251 | LOW (12/100) | No Violation Identified (0 qtrs NC) | $0 |
| USPS AVONDALE FREE PREVIEW (LOW RISK) | NO ADDRESS ON FILE, UNKNOWN, AZ 85282 | LOW (11/100) | No Violation Identified (0 qtrs NC) | $0 |
| 🔒 Locked Regulated EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • UNKNOWN, AZ (ZIP 85251 Sector) | LOW (11/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
Frequently Asked Questions — Collin County, Arizona Environmental Due Diligence
How many EPA-regulated environmental sites are in Collin County County, Arizona?
Public U.S. EPA records track 5 regulated facilities in Collin County County, Arizona (ranking #47 of 47 jurisdictions in AZ). Of those, 0 (0.0%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 0 (0.0%) have active non-compliance quarters.
Which ZIP codes and cities in Collin County County have the highest regulated facility density?
Within Collin County County, the highest concentrations of EPA-tracked facilities are located in local postal sectors, spanning municipal corridors including Collin County.
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Collin County County?
Across Collin 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 Collin County County, AZ?
Geologic indoor air screening places Collin 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 Collin County County, AZ?
Federal records track 0 Safe Drinking Water (SDWIS) facilities, 5 Clean Water Act NPDES permits, and 0 impaired water dischargers in Collin County County, alongside 22 historical FEMA federal disaster declarations (6 flood/storm events).
Does Collin County, AZ have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Collin 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.