| 2024 | | William (Bill) Snyder | Brendon Joyce | | | Brunswick & Topsham Water District | | David Parent |
| 2023 | Bill Dawson | Rick Anair | Chris Curtis and Kevin Luttrell | Nicki Pellenz | Brewer Water Department | Mike Pelkey | Brian McGuire | Kevin Black and Greg Leighton. Larry Girvan (June mtg) |
| 2022 | Jennifer Nicholson and Jeff Musich | Sid Hazelton and Keith Pooler | Matt Zetterman | Chris Dwinal | Kennebec Water District | Rick Anair | John Leach | Rick Knowlton |
| 2021 | Dave Parent and Frank Ruksznis | Mike Rogers | Benny LaPlante | Rob Pontau | Kennebunk, Kennebunkport, Wells Water District | Nicole Pellenz | Brian McGuire | Rick Knowlton, William Alexander, and Trevor Hunt |
| 2020 | Leonard Blanchette | Keith Levaasseur | Justin Richardson | A&L Labs | Maine Water Co-Skowhegan Div | Bruce Berger | Brian McGuire | Skip Dumais, Robert MacKinnon, and Alan Frasier |
| 2019 | | Frank Kearney, Sr. | Gary Stevens, Don Neumann | William Terry | Orono-Veazie Water District | Five Rivers | Scott Abbotoni | Peter Prescott and Albert Hodsdon |
| 2018 | | Alan Hitchcock | June Mooney | Steve Sloan | Jackman Utilities District | Peter Prescott | Mike Broadbent | Terry Trott |
| 2017 | | Norm Labbe | Alan Frasier | Jeff Musich | Searsport Water District | Barb Farrell | Jim Wallace | Ron Boivin and John Clark |
| 2016 | | Cynthia Clements, June Mooney | Robert MacKinnon | Steve Clements | Portland Water District | Chris Curtis, Justin Richardson | | Judy Wallingford |
| 2015 | | Brian McGuire | Kirby Littlefield | Mike Pelkey | York Water District, Hampden Water District | Kathy Moriarty | | Jeff McNelly |
| 2014 | | Steve Freeman | Henry "Butch" Tibbetts | Matt Timberlake | Houlton Water Co. | Norm Lamie | | Carlton Gardner |
| 2013 | | Jeffrey LaCasse | Dennis Cross | Karen Asselin | Anson & Madison Water District, Brunswick & Topsham Water District | Jeffrey McNelly | | |
| 2012 | | Judy Wallingford | Robbie Weymouth | Nicole Pellenz | Winthrop Utilities District | Kirsten Ness | | Bruce Goucher |
| 2011 | | Jefferson Longfellow | Frank Kearney | Robbie Chadwick | MWWCA | Jeff Musich, Robert MacKinnon, Norm Labbe, Robert Sypitkowski, | | Ronald Gray |
| 2010 | | Daniel Wells | Dana Ayers | Peter Garrett | Wiscasset Water District, Presque Isle Water District | Mary Jane Dillingham | | |
| 2009 | | Dennis Knowles | Michael Broadbent | Gregory Cataldo | Madawaska Water District | Kittery Trustees: James Golter, Robert Wyman, Roger Raymond | | |
| 2008 | | Ronald Gray | Kim Marchegiani, Madeleine Storer | Bruce Stevens | Freeport Division Aqua Maine, Ellsworth Water Department | Harry Pinkham | | |
| 2007 | | James West | George Dugovic | Albert Hodsdon | | Michael Nadeau | | |
| 2006 | | | Donald Gobeil | | Kennebunk, Kport & Wells WD | Gregory Cataldo | | |
| 2005 | | Scott Minor | David Parent | Peter Prescott | Bangor Water District | Richard Berry | | |
| 2004 | | | | Stephani Morancie | Portland Water District | David Michniewicz | | |
| 2003 | | Mary Jane Dillingham | Linda Williamson | Bruce Berger | Greater August Water District, Richmond Water District | Ron Miller | | |
| 2002 | | | Bruce Goucher* | | Auburn Water District | Dave Sweet | | Steve Bishop |
| 2001 | | David Michniewicz | Thomas Hussey | | | Norm Lamie | | |
| 2000 | | Phil Boissonneault | Don Cammack | | | Brian Tarbuck | | |
| 1999 | | Wayne Rogalski | Thomas Minchin, Jr.* | | | | | |
| 1998 | | Norm Lamie | Charles Baker | | | Biddeford Saco WC | | |
| 1997 | | | George Peters | | | | | |
| 1996 | | | Trevor Hunt | | | | | |
| 1995 | | | | | | | | |
| 1994 | | | | | | | | |
| 1993 | | | | | | | | |
