The Lake Lanier Islands Development Authority is moving forward with plans to tap a Flowery Branch well, now that the water source has gotten favorable test results, including the potential to produce up to 860,000 gallons per day.“The water quality is good. It meets all the drinking standards currently ... and there are no significant impacts on the Flowery Branch well system,” said Bill Donohue, the authority’s executive director, on Tuesday.“The report also clearly shows that the chemistry of this water is drastically different than the chemistry of the lake.”In August, the Lake Lanier Islands Development Authority was awarded more than $4.4 million in state money to rehabilitate the well.The development authority plans to use the money to tap into the well; install, if needed, the infrastructure associated with the transmission of water; and to buy the appropriate property. The money was allocated through Gov.