 Current towns with full membership include Belchertown, Chesterfield, Cummington, Goshen, Granby, Hadley, Hatfield, Huntington, Middlefield, Pelham, Plainfield, South Hadley, Southampton, Westhampton, and Williamsburg.Each town has one or more Councilors, elected by the voters in their local Town Elections.The Cooperative Purchasing program coordinates and administers a formal bidding process for bulk buying.