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| Company | Location | County | Certifications | License # |
|---|---|---|---|---|
| W. Hook Septic, Llc Dba Silloway Septic Service | Chelsea, VT | — | Septage Hauler | 2264 |
| W.L. French Excavating Corporation | Billerica, MA | — | Septage Hauler | 844 |
| Waste Management Of Nh, Inc. (Dba Cheshire Sanitation) | Swanzey, NH | — | Septage Hauler | 535 |
| Wasted* Public Benefit Corporation | Williston, VT | — | Septage Hauler | 2500 |
| Weston Standish | Danville, VT | — | Designer | — |
| White Mountain Resource Management, Inc., Dba Resource Management, Inc. | Holderness, NH | — | Septage Hauler | 691 |
| White'S Septic Service Vt Llc | Jefferson, NH | — | Septage Hauler | 2189 |
| William Hill | Baldwinsville, NY | — | Designer | — |
| William Norland | Starksboro, VT | — | Designer | — |
| Wind River Environmental Llc | Marlborough, MA | — | Septage Hauler | 1083 |
| Working Dog Septic Service Inc. | Cambridge, VT | — | Septage Hauler | 661 |
| World Resources Company | Pottsville, PA | — | Septage Hauler | 2234 |
| Wrs Environmental Services, Inc. Dba Champion Environmental Services | Holtsville, NY | — | Septage Hauler | 769 |
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