Adams County, CO
The federal environmental record for Adams County (population 533,365): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
4
Superfund NPL sites
8
federal cleanup sites
4
PFAS-detecting water systems
49
TRI facilities
50
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Broderick Wood Products | Denver | on the NPL | 09/21/1984 |
| Rocky Mountain Arsenal (USARMY) | Adams County | on the NPL | 07/22/1987 |
| Sand Creek Industrial | Commerce City | deleted | 09/08/1983 |
| Woodbury Chemical Co. | Commerce City | deleted | 09/08/1983 |
Drinking water: PFAS testing
Public water systems serving Adams with at least one PFAS detection under UCMR5. The federal limit for PFOA and PFOS is 4 ng/L; EPA proposed in May 2026 to rescind the limits for the other compounds, which are shown for information.
| System | Highest results | Reading |
|---|---|---|
| BRIGHTON CITY OF CO0101025 | PFPeA: 19.3 ng/L PFOS: 10.6 ng/L PFBA: 10.6 ng/L | above final limit |
| THORNTON CITY OF CO0101150 | PFHxA: 12.6 ng/L PFPeA: 12.4 ng/L PFBA: 10.4 ng/L | above final limit |
| TODD CREEK VILLAGE MD CO0101157 | PFBS: 38 ng/L PFHxA: 8.7 ng/L PFOS: 6.8 ng/L | above final limit |
| SOUTH ADAMS COUNTY WSD CO0101140 | PFPeA: 11.4 ng/L PFBA: 9.5 ng/L PFHxA: 4.4 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
49 facilities in Adams filed TRI reports for 2024, totalling 1.7M lb released. The 25 largest by volume:
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| CLEAN HARBORS DEER TRAIL LLC. | DEER TRAIL | Aluminum oxide (fibrous forms), Ethylene glycol | 1.1M lb |
| UNIVAR SOLUTIONS-DENVER WEST | DENVER | Methanol, Toluene | 275k lb |
| SUNCOR ENERGY COMMERCE CITY REFINERY | COMMERCE CITY | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Hydrogen cyanide | 175k lb |
| ADVANCEDPCB | AURORA | Copper, Nitric acid | 44k lb |
| INTERTAPE POLYMER GROUP BRIGHTON FACILITY | BRIGHTON | n-Hexane, Toluene | 22k lb |
| ELKAY WOOD PRODUCTS CO | AURORA | Toluene, Xylene (mixed isomers) | 22k lb |
| SIKA MBCC US LLC | BRIGHTON | Diisocyanates, 1,2,4-Trimethylbenzene | 17k lb |
| WATTENBERG GAS PLANT/ ANADARKO DJ GAS PROCESSING LLC | AURORA | Benzene, Toluene | 17k lb |
| COLORADO PAINT CO | AURORA | Methanol, Methyl methacrylate | 14k lb |
| SASHCO INC. | THORNTON | Toluene, Ethylene glycol | 11k lb |
| AZZ GALVANIZING -DENVER | COMMERCE CITY | Zinc compounds, Lead | 6k lb |
| DIVERSEY CORP | HENDERSON | Nitric acid, Lead | 6k lb |
| VEOLIA ES TECHNICAL SOLUTIONS LLC | HENDERSON | Certain glycol ethers, Acetonitrile | 5k lb |
| PHILLIPS 66 CO DENVER TERMINAL | COMMERCE CITY | Toluene, n-Hexane | 3k lb |
| E J PAINTING & FIBERGLASS | BRIGHTON | Styrene | 2k lb |
| HOLCIM WCR INC SAND CREEK READY MIX PLANT | AURORA | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Lead And Lead Compounds | 1k lb |
| B&B BLENDING LLC | DENVER | Certain glycol ethers | 1k lb |
| THERMO FLUIDS DENVER | COMMERCE CITY | Methanol, Ethylene glycol | 970 lb |
| HOLCIM WCR INC DENVER READY MIX PLANT | DENVER | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Lead And Lead Compounds | 807 lb |
| OWENS CORNING ROOFING & ASPHALT LLC | DENVER | Copper And Copper Compounds, Polycyclic aromatic compounds | 689 lb |
| HOLCIM WCR INC COMMERCE CITY READY MIX PLANT | HENDERSON | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Lead And Lead Compounds | 514 lb |
| VANCE BROTHERS LLC | DENVER | Polycyclic aromatic compounds, Benzo[g,h,i]perylene | 306 lb |
| OWENS CORNING ROOFING & ASPHALT LLC | DENVER | Polycyclic aromatic compounds, Benzo[g,h,i]perylene | 264 lb |
| ZIMMERMAN METALS INC | DENVER | Manganese, Nickel | 49 lb |
| MARTIN MARIETTA - MONAGHAN ASPHALT | AURORA | Polycyclic aromatic compounds, Benzo[g,h,i]perylene | 1 lb |
Underground fuel tanks
EPA's UST Finder records 880 tank facilities in Adams: 624 tanks in service and 1,984 closed. 719 fuel releases are on record, of which 50 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Adams as Zone 1, the highest predicted indoor radon levels (over 4 pCi/L average). Radon and air quality are covered in depth on lung.com.
The record for one specific address
County figures blur what matters: distance. The Address Environmental Report runs these same federal datasets against one address and reports every site, tank, polluter and water result around it, with distances, in about a minute.
Get the report - $39All federal cleanup sites on file
The wider Superfund enterprise inventory (SEMS) for Adams, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- BRODERICK WOOD PRODUCTS CODENVER
- DEPARTMENT OF VETERAN AFFAIRSAURORA
- FITZSIMONS ARMY MEDICAL CTRAURORA
- JWBSK INC. DBA WEAVER ELECTRIC COMPANYDENVER
- MOLINE STREET PCBSAURORA
- STANLEY AVIATION CORPAURORA
- UNITED MINERALS CORPORATIONDENVER
- WOODBURY CHEMICAL CO.COMMERCE CITY