Boulder County, CO
The federal environmental record for Boulder County (population 326,831): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
2
Superfund NPL sites
2
federal cleanup sites
0
PFAS-detecting water systems
16
TRI facilities
18
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Captain Jack Mill | Ward | on the NPL | 09/29/2003 |
| Marshall Landfill | Boulder County | on the NPL | 09/08/1983 |
Drinking water: PFAS testing
No public water system serving Boulder reported a PFAS detection in the UCMR5 national testing round. Systems serving under 3,300 people were only sampled in part, so absence from this table is not proof of absence in the water.
Facilities reporting toxic releases (2024)
16 facilities in Boulder filed TRI reports for 2024, totalling 113k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| MICRO MOTION INC. | BOULDER | Nickel, Chromium | 69k lb |
| CORDEN PHARMA COLORADO INC | BOULDER | Methanol, Acetonitrile | 23k lb |
| CIRCLE GRAPHICS INC | LONGMONT | Certain glycol ethers | 9k lb |
| CEMEX CONSTRUCTION MATERIALS SOUTH LLC | LONGMONT | Ammonia, Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) | 4k lb |
| CORDEN PHARMA COLORADO STERLING DRIVE | BOULDER | Methanol, Methyl tert-butyl ether | 4k lb |
| LEXMARK INTERNATIONAL INC | LONGMONT | Zinc compounds, N-Methyl-2-pyrrolidone | 2k lb |
| AGILENT TECHNOLOGIES BOULDER CO | BOULDER | Acetonitrile, Toluene | 489 lb |
| DHARMACON INC | LAFAYETTE | Acetonitrile | 133 lb |
| WESTERN FOUNDRIES INC | LONGMONT | Chromium, Nickel | 73 lb |
| NATIONAL INSTITUTE OF STANDARD&TECHNOLOGY BOULDER | BOULDER | Lead, Mercury | 3 lb |
| MATHESON TRIGAS LONGMONT CO BRANCH | LONGMONT | Hydrogen fluoride | 1 lb |
| READY MIXED CONCRETE CO PLANT 14 | LAFAYETTE | Lead compounds | 0 lb |
| SMYRNA READY MIX CONCRETE LLC - VALMONT READY MIX | BOULDER | Lead And Lead Compounds | 0 lb |
| SMYRNA READY MIX CONCRETE LLC - ROCK CREEK READY MIX | LAFAYETTE | Lead And Lead Compounds | 0 lb |
| DIETERICH STANDARD INC | BOULDER | - | 0 lb |
| ARCOSA ESC BOULDER | BOULDER | Dioxin and dioxin-like compounds | 0 lb |
Underground fuel tanks
EPA's UST Finder records 417 tank facilities in Boulder: 273 tanks in service and 887 closed. 368 fuel releases are on record, of which 18 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Boulder 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 Boulder, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- BOULDER LANDFILLBOULDER
- BUENO MILL & MINE SITEJAMESTOWN