Maricopa County, Arizona — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Maricopa County, AZ?
In Maricopa County, Arizona, public U.S. EPA records track 2,920 regulated facilities (#2 of 36 in Arizona), including 4 (0.1%) High-Risk sites and $28,600 in federal penalties. Countywide due diligence also covers 21 Safe Drinking Water (SDWIS) facilities, 2,723 Clean Water NPDES permits, 3 FEMA Federal Disaster Declarations (0 flood/storm), USDA Soil Foundation Shrink-Swell (MODERATE signal), and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).
Maricopa 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📊 Maricopa County, AZ Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Maricopa County
ZIP Codes in Maricopa County
Top EPA Regulated Facilities in Maricopa 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 |
|---|---|---|---|---|
| 🔒 Locked High-Risk EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • PRESCOTT VALLEY, AZ (ZIP 86314 Sector) | HIGH (64/100) | Significant Violation (6 qtrs NC) | 🔒 6 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • CHANDLER, AZ (ZIP 85226 Sector) | HIGH (64/100) | Significant Violation (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • UNKNOWN, AZ (ZIP 86305 Sector) | HIGH (64/100) | Significant Violation (1 qtrs NC) | 🔒 1 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • UNKNOWN, AZ (ZIP 85255 Sector) | MODERATE (45/100) | Violation Identified (4 qtrs NC) | 🔒 4 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • BUCKEYE, AZ (ZIP 85326 Sector) | MODERATE (45/100) | Violation Identified (2 qtrs NC) | 🔒 2 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • BUCKEYE, AZ (ZIP 85326 Sector) | MODERATE (44/100) | Violation Identified (2 qtrs NC) | 🔒 2 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • PHOENIX, AZ (ZIP 85024 Sector) | MODERATE (44/100) | Violation Identified (2 qtrs NC) | 🔒 2 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • MESA, AZ (ZIP 85215 Sector) | MODERATE (43/100) | Violation Identified (2 qtrs NC) | 🔒 2 Qtrs Non-Compliance • Unlock → |
| SITEONE LANDSCAPE SUPPLY #8102 DC FREE PREVIEW (LOW RISK) | 3595 N COTTON LN, GOODYEAR, AZ 85395 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| SWISHER HYGIENE INC. FREE PREVIEW (LOW RISK) | 8590 W BUCKEYE RD, STE 101, TOLLESON, AZ 85353 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| FLUIDIC ENERGY 2 FREE PREVIEW (LOW RISK) | 8425 N 90TH ST, SCOTTSDALE, AZ 85258 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| BIG BUG SAND & GRAVEL FREE PREVIEW (LOW RISK) | PO BOX 1, MAYER, AZ 86333 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Maricopa County, Arizona Environmental Due Diligence
How many EPA-regulated environmental sites are in Maricopa County County, Arizona?
Public U.S. EPA records track 2,920 regulated facilities in Maricopa County County, Arizona (ranking #2 of 36 jurisdictions in AZ). Of those, 4 (0.1%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 47 (1.6%) have active non-compliance quarters.
Which ZIP codes and cities in Maricopa County County have the highest regulated facility density?
Within Maricopa County County, the highest concentrations of EPA-tracked facilities are located in ZIP 85253 (Paradise Valley, 322 sites), ZIP 85027 (Phoenix, 259 sites), ZIP 85016 (Unknown, 228 sites), spanning municipal corridors including Unknown (2,458 sites), Paradise Valley (249 sites), Goodyear (209 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Maricopa County County?
Across Maricopa County County, 29 facilities (1.0% 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 Maricopa County County, AZ?
Geologic indoor air screening places Maricopa County 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 Maricopa County County, AZ?
Federal records track 21 Safe Drinking Water (SDWIS) facilities, 2,723 Clean Water Act NPDES permits, and 91 impaired water dischargers in Maricopa County County, alongside 3 historical FEMA federal disaster declarations (0 flood/storm events).
Does Maricopa County, AZ have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Maricopa County indicates a MODERATE 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.