The future of Lake Lanier’s water quality is on tap Thursday at a meeting at Unicoi State Park in Helen. Lake Lanier Stakeholders, a fledgling group largely comprising public utility officials, is set to hold its third meeting from 10 a.m. to noon with the state Environmental Protection Division, over developing water standards for the lake. Data concerning current discharges into the lake are set to be presented, fashioned mostly in “pie charts and maybe a map or two,” said Adam Hazell, planning director at the Gainesville-based Georgia Mountains Regional Commission.