Jefferson County, Colorado — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Jefferson County, CO?
In Jefferson County, Colorado, public U.S. EPA records track 3,778 regulated facilities (#6 of 108 in Colorado), including 41 (1.1%) High-Risk sites and $1,602,610 in federal penalties. Countywide due diligence also covers 156 Safe Drinking Water (SDWIS) facilities, 1,758 Clean Water NPDES permits, 2 FEMA Federal Disaster Declarations (1 flood/storm), USDA Soil Foundation Shrink-Swell (MODERATE signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Jefferson 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📊 Jefferson County, CO Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Jefferson County
ZIP Codes in Jefferson County
Top EPA Regulated Facilities in Jefferson 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 High-Risk EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • DENVER, CO (ZIP 80215 Sector) | HIGH (88/100) | Significant Violation (12 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • GOLDEN, CO (ZIP 80401 Sector) | HIGH (86/100) | Violation Identified (12 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • WHEAT RIDGE, CO (ZIP 80033 Sector) | HIGH (84/100) | Significant Violation (8 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • LAKEWOOD, CO (ZIP 80228 Sector) | HIGH (76/100) | Significant Violation (11 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • GOLDEN, CO (ZIP 80403 Sector) | HIGH (73/100) | Significant Violation (12 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • WHEAT RIDGE, CO (ZIP 80033 Sector) | HIGH (70/100) | Significant Violation (12 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • ARVADA, CO (ZIP 80002 Sector) | HIGH (69/100) | Violation (8 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • GOLDEN, CO (ZIP 80401 Sector) | HIGH (69/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| BUILDERS SQUARE FREE PREVIEW (LOW RISK) | 7325 WEST 88TH AVE, BROOMFIELD, CO 80021 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| SAFEWAY STORE #1249 FREE PREVIEW (LOW RISK) | 7500 S PIERCE, LITTLETON, CO 80128 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Jefferson County, Colorado Environmental Due Diligence
How many EPA-regulated environmental sites are in Jefferson County, Colorado?
Public U.S. EPA records track 3,778 regulated facilities in Jefferson County, Colorado (ranking #6 of 108 jurisdictions in CO). Of those, 41 (1.1%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 89 (2.4%) have active non-compliance quarters.
Which ZIP codes and cities in Jefferson County have the highest regulated facility density?
Within Jefferson County, the highest concentrations of EPA-tracked facilities are located in ZIP 80033 (Wheat Ridge, 346 sites), ZIP 80403 (Golden, 327 sites), ZIP 80002 (Arvada, 308 sites), spanning municipal corridors including Arvada (830 sites), Broomfield (775 sites), Lakewood (746 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Jefferson County?
Across Jefferson County, 1,430 facilities (37.9% 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 Jefferson County, CO?
Geologic indoor air screening places Jefferson 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 Jefferson County, CO?
Federal records track 156 Safe Drinking Water (SDWIS) facilities, 1,758 Clean Water Act NPDES permits, and 140 impaired water dischargers in Jefferson County, alongside 2 historical FEMA federal disaster declarations (1 flood/storm events).
Does Jefferson County, CO have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Jefferson 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.