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| Owner Members | Contract Members |
| Bridgton | Andover |
| Buxton | Appleton |
| Cape Elizabeth | Augusta |
| Casco | Baldwin |
| Cumberland | Brownfield |
| Dayton | Brunswick |
| Falmouth | Chebeague Island |
| Freeport | Cornish |
| Gorham | Denmark |
| Gray | Eliot |
| Harrison | Fayette |
| Hollis | Frye Island |
| Kennebunk | Fryeburg |
| Limington | Greenland, NH |
| Lyman | Hiram |
| North Berwick | Kennebunkport |
| North Yarmouth | Lamoine |
| Portland | Liberty |
| Pownal | Limerick |
| Sanford | Livermore Falls |
| Scarborough | Monmouth |
| Shapleigh | Mt. Vernon |
| South Berwick | Newington, NH |
| South Portland | Naples |
| Waterboro | Old Orchard Beach |
| Windham | Otisfield |
| Yarmouth | Owl's Head |
| Parsonsfield |
| Porter |
| Readfield |
| Rockland |
| Saco |
| Somerville |
| South Thomaston |
| Standish |
| Swanville |
| Thomaston |
| Topsham |
| Vinalhaven |
| Washington |
| Wayne |
| Westbrook |
| Woolwich |
