A private water group’s new leader doesn’t have the job of getting 56 members to buy into a tri-state water management plan — a work that took nearly six years to complete. But Betty Webb, city administrator for Apalachicola, Fla., has a big task of her own: helping put the plan in the hands of Georgia, Florida and Alabama governors, key staff members and elected officials. The Apalachicola-Chattahoochee-Flint Stakeholders group also hopes to get its 130-page Sustainable Water Management Plan to the Army Corps of Engineers and state and federal agencies.