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Adams County, Colorado — Property Hazard, Flood Zone, Soil, Water & EPA Guide

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What Are the Flood, Soil Foundation & EPA Risks in Adams County, CO?

In Adams County, Colorado, public U.S. EPA records track 5,387 regulated facilities (#3 of 108 in Colorado), including 72 (1.3%) High-Risk sites and $9,399,683 in federal penalties. Countywide due diligence also covers 93 Safe Drinking Water (SDWIS) facilities, 2,943 Clean Water NPDES permits, 14 FEMA Federal Disaster Declarations (1 flood/storm), USDA Soil Foundation Shrink-Swell (HIGH signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).

Total EPA Sites (#3/108)
5,387
High-Risk (1.3% vs 1.4% State)
72
Active Violators (3.0%)
160
Drinking & Clean Water
3,036
Federal Penalties
$9,399,683

Adams 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
🌊 Flood Zone & FEMA Disaster History
14 County FEMA Declarations (1 Flood/Storm)
🔒 Exact Parcel Flood Zone (AE / VE / X) & SFHA Insurance Requirement Locked
Check Property Flood Zone →
🪨 USDA Soil, Foundation & Water Table
Shrink-Swell Risk Signal: HIGH • Pipe Corrosion: Low
🔒 Exact USDA Soil Series, Linear Extensibility (LEP %) & Water Table Depth (ft) Locked
Unlock Parcel Soil Test →
🚰 Tap Water (SDWIS) & PFAS Check
93 SDWIS Systems • 2,943 NPDES Permits
🔒 198 Impaired Water (303d) & 247 Violation Dockets Locked
Unlock Utility Violation Log →
☢️ EPA Radon & Karst Sinkhole
EPA Zone 1 — High Potential (> 4.0 pCi/L)
Low / Non-Karst Bedrock & Alluvial Formation
🔒 0.25-Mi Vapor Intrusion Buffer Locked

📊 Adams County, CO Statistical Risk Graphs & Multi-Hazard Telemetry

SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)
1. County Regulatory & Water Program Mix
RCRA Hazardous Waste Generators 1,384 (25.7%)
Clean Water (NPDES) & Drinking Water (SDWIS) 3,036 (56.4%)
Active EPA Non-Compliance Dockets 160 (3.0%)
High-Risk Enforcement Facilities 72 (1.3%)
2. FEMA NRI & USGS Hazard Index (1–10) Relatively Moderate (91.2/100)
🌊 Flood Exposure 5/10 • Moderate Hazard
🔥 Wildfire Hazard 3/10 • Low Hazard
☀️ Extreme Heat 3/10 • Low Hazard
🌪️ Severe Wind / Storm 7/10 • High Hazard
🫨 USGS Earthquake 2/10 • Low Seismic Hazard
3. County vs. State & National Benchmark
Adams County High-Risk % 1.3%
Colorado (CO) Statewide Avg 1.4%
U.S. National EPA Baseline 3.6%
Unlock Street-Level Dossier: Full report reveals unredacted facility names, distances in feet, exact USDA soil LEP %, water table depth, and parcel flood zone.
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Top EPA Regulated Facilities in Adams 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).

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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 • COMMERCE CITY, CO (ZIP 80022 Sector) HIGH (98/100) Significant Violation (12 qtrs NC) 🔒 $100,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #2 🔒 Exact Street & Parcel Redacted • DEER TRAIL, CO (ZIP 80105 Sector) HIGH (78/100) Violation (12 qtrs NC) 🔒 $10,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #3 🔒 Exact Street & Parcel Redacted • HENDERSON, CO (ZIP 80640 Sector) HIGH (73/100) Violation Identified (12 qtrs NC) 🔒 $10,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #4 🔒 Exact Street & Parcel Redacted • HENDERSON, CO (ZIP 80640 Sector) HIGH (70/100) Violation (12 qtrs NC) 🔒 $10,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #5 🔒 Exact Street & Parcel Redacted • COMMERCE CITY, CO (ZIP 80022 Sector) HIGH (70/100) Significant Violation (12 qtrs NC) 🔒 12 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #6 🔒 Exact Street & Parcel Redacted • BRIGHTON, CO (ZIP 80601 Sector) HIGH (69/100) Significant Violation (12 qtrs NC) 🔒 $10,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #7 🔒 Exact Street & Parcel Redacted • HENDERSON, CO (ZIP 80640 Sector) HIGH (67/100) Violation Identified (12 qtrs NC) 🔒 Federal Penalty on File • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #8 🔒 Exact Street & Parcel Redacted • AURORA, CO (ZIP 80137 Sector) HIGH (64/100) Violation Identified (2 qtrs NC) 🔒 $10,000+ Federal Fine • Unlock →
LAFARGE WEST, INC. FREE PREVIEW (LOW RISK) 1400 WEST 64TH AVENUE, DENVER, CO 80221 LOW (18/100) No Violation Identified (0 qtrs NC) $0
FEDEX NATIONAL LTL FREE PREVIEW (LOW RISK) 9789 E 99TH PL, HENDERSON, CO 80640 LOW (17/100) No Violation Identified (0 qtrs NC) $0
PARKWAY MARKET CENTER FREE PREVIEW (LOW RISK) 6025/75 PARKWAY DR, COMMERCE CITY, CO 80022 LOW (16/100) No Violation Identified (0 qtrs NC) $0
COLORADO & EASTERN RAILROAD FREE PREVIEW (LOW RISK) 54TH & DAHLIA, COMMERCE CITY, CO 80022 LOW (16/100) No Violation Identified (0 qtrs NC) $0
🔒 + 5,375 Additional Regulated & Enforcement Records in Adams County Redacted from Public Directory Run 1-Mile Property Scan to Unlock All Records →

Frequently Asked Questions — Adams County, Colorado Environmental Due Diligence

How many EPA-regulated environmental sites are in Adams County, Colorado?

Public U.S. EPA records track 5,387 regulated facilities in Adams County, Colorado (ranking #3 of 108 jurisdictions in CO). Of those, 72 (1.3%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 160 (3.0%) have active non-compliance quarters.

Which ZIP codes and cities in Adams County have the highest regulated facility density?

Within Adams County, the highest concentrations of EPA-tracked facilities are located in ZIP 80022 (Commerce City, 969 sites), ZIP 80601 (Brighton, 733 sites), ZIP 80229 (Denver, 392 sites), spanning municipal corridors including Commerce City (998 sites), Brighton (906 sites), Thornton (713 sites).

How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Adams County?

Across Adams County, 1,384 facilities (25.7% 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 Adams County, CO?

Geologic indoor air screening places Adams 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 Adams County, CO?

Federal records track 93 Safe Drinking Water (SDWIS) facilities, 2,943 Clean Water Act NPDES permits, and 198 impaired water dischargers in Adams County, alongside 14 historical FEMA federal disaster declarations (1 flood/storm events).

Does Adams County, CO have expansive clay soil or foundation risk?

USDA regional soil engineering screening for Adams County indicates a HIGH 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.

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