- Texas Underground Inc
- TLC Construction Co
- Tom Pittman Plumbing
- Tom's Plumbing
- Tony & Son Plumbing Inc
- Town Of Luray Sewer Pump Sta
- Tri-County Pumpers Inc
- Twin D Inc
- Twin D Sewer & Drain Svc Inc
- United Sewer & Water Inc
- United Sewer Contractor
- United Sewer Contractor
- Uticon Inc
- V & M Sewer & Drain Svc
- Val Kotter & Sons Inc
- Venus Construction Co
- Visu-Sewer Clean & Seal Inc
- W C Spratt Inc
- W T Solutions
- Wall Construction Inc
- Warner Co
- Wasatch Sewer & Drain Svc
- Water Sewer Svc
- Wayne Stever Inc
- Welch Sewer System
- Westover Sanitary Sewer Dept
- Wilkins & Assoc Inc
- William & Ted Siwek Sewer
- Willie's Plumbing
- Wilson Sewer District
- Winchester Water & Sewer
- Wind River Environmental
- Winnebago Liquid Waste
- Wisconsin Excavating Inc
- Woleske Construction Co
- Wood Sewer & Excavating
- Woody's Plumbing Inc
- Z Best Construction
- Z Rooter