Boulder County, Colorado — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Boulder County, CO?
In Boulder County, Colorado, public U.S. EPA records track 84 regulated facilities (#67 of 108 in Colorado), including 1 (1.2%) High-Risk sites and $7,861 in federal penalties. Countywide due diligence also covers 0 Safe Drinking Water (SDWIS) facilities, 49 Clean Water NPDES permits, 3 FEMA Federal Disaster Declarations (0 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Boulder 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📊 Boulder County, CO Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)Municipalities in Boulder County
ZIP Codes in Boulder County
Top EPA Regulated Facilities in Boulder 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 • LONGMONT, CO (ZIP 80503 Sector) | HIGH (64/100) | Significant Violation (4 qtrs NC) | 🔒 Federal Penalty on File • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • LOUISVILLE, CO (ZIP 80027 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • LONGMONT, CO (ZIP 80501 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (1 qtrs NC) | 🔒 1 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • BOULDER, CO (ZIP 80302 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • BOULDER, CO (ZIP 80301 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • LONGMONT, CO (ZIP 80504 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • BOULDER, CO (ZIP 80303 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • LONGMONT, CO (ZIP 80501 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| BASECAMP VENTURES LLC FREE PREVIEW (LOW RISK) | 91 FOURMILE CANYON DR, BOULDER, CO 80302 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| BOULDER CITY OF FREE PREVIEW (LOW RISK) | 1739 BROADWAY, BOULDER, CO 00000 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| 30 PRL - Q3 & Q4N FREE PREVIEW (LOW RISK) | 3105 SPRUCE STREET, BOULDER, CO 80301 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| BOSTON AVE OVER ST VRAIN BRIDGE REPLACEMENT FREE PREVIEW (LOW RISK) | BOSTON AVE, LONGMONT, CO 80501 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Boulder County, Colorado Environmental Due Diligence
How many EPA-regulated environmental sites are in Boulder County County, Colorado?
Public U.S. EPA records track 84 regulated facilities in Boulder County County, Colorado (ranking #67 of 108 jurisdictions in CO). Of those, 1 (1.2%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 1 (1.2%) have active non-compliance quarters.
Which ZIP codes and cities in Boulder County County have the highest regulated facility density?
Within Boulder County County, the highest concentrations of EPA-tracked facilities are located in ZIP 80533 (Longmont, 6 sites), spanning municipal corridors including Gunnison Area (5 sites), Minot (1 sites), Lyons Area (1 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Boulder County County?
Across Boulder County County, 2 facilities (2.4% 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 Boulder County County, CO?
Geologic indoor air screening places Boulder 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 Boulder County County, CO?
Federal records track 0 Safe Drinking Water (SDWIS) facilities, 49 Clean Water Act NPDES permits, and 5 impaired water dischargers in Boulder County County, alongside 3 historical FEMA federal disaster declarations (0 flood/storm events).
Does Boulder County, CO have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Boulder County indicates a LOW shrink-swell risk signal and steel pipe corrosivity rated Low. Run a street address scan to unlock the exact parcel soil series, LEP %, and water table depth.