Arapahoe County, Colorado — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Arapahoe County, CO?
In Arapahoe County, Colorado, public U.S. EPA records track 144 regulated facilities (#54 of 108 in Colorado), including 6 (4.2%) High-Risk sites and $523,250 in federal penalties. Countywide due diligence also covers 1 Safe Drinking Water (SDWIS) facilities, 53 Clean Water NPDES permits, 1 FEMA Federal Disaster Declarations (1 flood/storm), USDA Soil Foundation Shrink-Swell (HIGH signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Arapahoe County, CO 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Arapahoe County, CO Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Arapahoe County
ZIP Codes in Arapahoe County
Top EPA Regulated Facilities in Arapahoe County, CO
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 Regulated EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • SHERIDAN, CO (ZIP 80110 Sector) | MODERATE (33/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • AURORA 2.4 MI. SE OF, CO (ZIP 80016 Sector) | MODERATE (32/100) | Resolved / Historical Non-Compliance (1 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • LITTLETON, CO (ZIP 80121 Sector) | MODERATE (31/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • CENTENNIAL, CO (ZIP 80111 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 • LITTLETON, CO (ZIP 80123 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • LITTLETON, CO (ZIP 80122 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • AURORA, CO (ZIP 80014 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • SHERIDAN, CO (ZIP 80110 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| TARGET CORPORATION - TARGET STORE T0256 FREE PREVIEW (LOW RISK) | 16910 E QUINCY AVE, AURORA, CO 80015 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| FGM-PARALLEL LLC FREE PREVIEW (LOW RISK) | 2750 SOUTH RARITAN STREET, ENGLEWOOD, CO 80110 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| THOMAS PLATING CO INC FREE PREVIEW (LOW RISK) | 4695 S WINDERMERE ST, ENGLEWOOD, CO 80110 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| EXTRACTION O&G - HOULIHAN PROD FACILITY FREE PREVIEW (LOW RISK) | SENE SEC 22 T4S R64W, WATKINS AREA, CO 80102 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Arapahoe County, Colorado Environmental Due Diligence
How many EPA-regulated environmental sites are in Arapahoe County County, Colorado?
Public U.S. EPA records track 144 regulated facilities in Arapahoe County County, Colorado (ranking #54 of 108 jurisdictions in CO). Of those, 6 (4.2%) 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 Arapahoe County County have the highest regulated facility density?
Within Arapahoe County County, the highest concentrations of EPA-tracked facilities are located in ZIP 80122 (Littleton, 184 sites), ZIP 80103 (Byers Area, 61 sites), spanning municipal corridors including Watkins Area (14 sites), Buckley Sfb (6 sites), Aurora 2.4 Mi. Se Of (2 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Arapahoe County County?
Across Arapahoe County County, 2 facilities (1.4% 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 Arapahoe County County, CO?
Geologic indoor air screening places Arapahoe County County in EPA Zone 1 — High Potential (> 4.0 pCi/L). Counties in EPA Radon Zone 1 have a predicted average indoor radon screening level greater than 4.0 pCi/L (the EPA action threshold). Short-term or continuous indoor radon testing is strongly recommended prior to closing.
How many drinking water systems (SDWIS), impaired water bodies, and FEMA flood disasters are recorded in Arapahoe County County, CO?
Federal records track 1 Safe Drinking Water (SDWIS) facilities, 53 Clean Water Act NPDES permits, and 1 impaired water dischargers in Arapahoe County County, alongside 1 historical FEMA federal disaster declarations (1 flood/storm events).
Does Arapahoe County, CO have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Arapahoe County indicates a HIGH 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.