| MEMBER | TERM | REPRESENTING |
| Senator Chuck Morse, Chair | Coterminous* | Member of N.H. Senate |
| Rep. Chris Christensen, Vice Chair | Coterminous | Member of N.H. House of Representatives |
| Senator Tom Sherman, Clerk | Coterminous | Member of N.H. Senate |
| Rachel Miller | Coterminous | State Treasurer or Designee |
| Rep. Suzanne Smith | Coterminous | Member of N.H. House of Representatives |
| Clark B. Freise | Coterminous | Governor or Designee |
| Lisa Morris | Coterminous | Director of the Division of Public Health Services, Department of Health and Human Service or Designee |
| Robert R. Scott | Coterminous | Commissioner of Department of Environmental Services or Designee |
| Christopher S. Way | Coterminous | Director of Economic Development, Department of Resources and Economic Development or Designee |
| Paul Sanderson | Coterminous | Executive Director of Fish and Game Department or Designee |
| Tim Vadney, P.E. | NH Water Pollution Control Association | |
| Dorothy Kurtz | Business Community | |
| Rick Russman | 8/02/17 to | State or Regional Land Trust |
| Marco Philippon | NH Water Works Association | |
| Bernie Rousseau | 3/31/16 to | Public Member With Experience in Treatment or Delivery of Drinking Water |
| Andrea Kenter, P.G. | 3/31/16 to | Public Member Representing Private Well Owners |
| Bruce Bretton | 8/02/17 – 8/02/18 | Selectman from Town Without Public Drinking Water |
| William W. Boyd, III | 8/08/17 – 8/08/19 | Town Council Member from Town With Public Drinking Water |
| Rodeny Bartlett | Public Member |
*Coterminous: service on Commission and term in office expire together.