Jefferson County, CO
The federal environmental record for Jefferson County (population 576,366): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
2
Superfund NPL sites
10
federal cleanup sites
2
PFAS-detecting water systems
15
TRI facilities
65
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Air Force Plant PJKS | Waterton | on the NPL | 11/21/1989 |
| Rocky Flats Plant (USDOE) | Golden | on the NPL | 10/04/1989 |
Drinking water: PFAS testing
Public water systems serving Jefferson 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 |
|---|---|---|
| CONSOLIDATED MUTUAL MAPLE GROVE CO0130020 | PFBS: 4 ng/L PFHxA: 3.8 ng/L PFPeA: 3.5 ng/L | detected |
| MORRISON TOWN OF CO0130085 | PFHxA: 4.4 ng/L PFBS: 3 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
15 facilities in Jefferson filed TRI reports for 2024, totalling 440k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| BALL METAL BEVERAGE CONTAINER CORP | GOLDEN | Certain glycol ethers, n-Butyl alcohol | 253k lb |
| MOLSON COORS USA LLC - GOLDEN BREWERY | GOLDEN | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Ammonia | 117k lb |
| ROCKY MOUNTAIN METAL CONTAINER | GOLDEN | Certain glycol ethers, n-Butyl alcohol | 65k lb |
| ADVANCED SURFACE TECHNOLOGIES INC | ARVADA | Nickel And Nickel Compounds, Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 3k lb |
| TERUMO BCT STERILIZATION SERVICES INC | LAKEWOOD | Ethylene oxide | 968 lb |
| ROCKY MOUNTAIN BOTTLE CO | WHEAT RIDGE | Lead And Lead Compounds | 231 lb |
| LIVANOVA | ARVADA | Ethylene oxide | 99 lb |
| SUNDYNE LLC | ARVADA | Nickel, Chromium | 10 lb |
| MARTIN MARIETTA SPEC AGG | GOLDEN | Polycyclic aromatic compounds, Benzo[g,h,i]perylene | 2 lb |
| SMYRNA READY MIX CONCRETE LLC - ARVADA READY MIX | ARVADA | Lead compounds | 0 lb |
| LAKEWOOD BRICK & TILE CO. | LAKEWOOD | - | 0 lb |
| ELECTRO-MECHANICAL PRODUCTS INC | LAKEWOOD | - | 0 lb |
| SMYRNA READY MIX CONCRETE LLC - SPEC AGG READY MIX | GOLDEN | Lead And Lead Compounds | 0 lb |
| LOCKHEED MARTIN SPACE | LITTLETON | - | 0 lb |
| BURNCO COLORADO LLC - JEFFCO | GOLDEN | Lead And Lead Compounds | 0 lb |
Underground fuel tanks
EPA's UST Finder records 847 tank facilities in Jefferson: 623 tanks in service and 1,788 closed. 817 fuel releases are on record, of which 65 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Jefferson 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 Jefferson, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- COLORADO SCHOOL OF MINES RESEARCH INSTGOLDEN
- FEDERAL CORRECTIONAL INSTITUTE, ENGLEWOODLITTLETON
- FORT LOGAN NATIONAL CEMETERYDENVER
- HWY 72 MILLARVADA
- NATIONAL ENFORCEMENT INVESTIGATION CENTERLAKEWOOD
- NATIONAL LABORATORY OF THE ROCKIES BLDG 16GOLDEN
- NATIONAL WIND TECHNOLOGY CENTERGOLDEN
- TWINS INNARVADA
- US GEOLOGICAL SURVEY -WATER LABARVADA
- WATER & POWER RESOURCESDENVER