KENNEBUNK, ME – OCTOBER 5: Randy Nichols checks the feed rate of hydrofluorosilicic acid, a type of fluoride in tanks at left, as it is added to water at the Kennebunk, Kennebunkport and Wells Water District. A forum will be held Monday in Kennebunk to discuss an upcoming referendum in seven towns that asks residents if they want to continue to add fluoride to drinking water. (Photo by Gregory Rec/Staff Photographer)