Water and sewage in Colorado
- Euell Energy Resources, Inc.
- Commodore Advanced Sciences, Inc.
- Colorado Springs Utilities
- Kfx Inc
- Qwest Communications International Inc
- Western Summit Constructors, Inc.
- Lillard & Clark Construction Company, Inc.
- Metro Wastewater Reclamation District
- Trautman & Shreve, Inc.
- Mile High Equipment, Inc.
- Nelson Pipeline Constructors
- Mt West Fabrication Plants and Stations, Inc
- Arcadis Geraghty & Miller Inc
- Lightning Ventures, Inc.
- Pate Construction Co., Inc.
- Pure Cycle Corp
- Connell Resources, Inc.
Water and sewage