Florida and Georgia have been arguing about the water that flows into the Apalachicola Bay for three decades, about as long as Tommy Ward and his family have been selling oysters from the bay. Florida says Georgia draws more than its fair share of water from the Flint and Chattahoochee rivers before they fuse to create the Apalachicola River. Georgia uses the water to supply thirsty Atlanta and the vast farmland south of the metropolis. But its disruption of the freshwater flow has increased the salinity of the bay and the number of oyster-eating predators, which are able to thrive in saltier water. The result: The virtual collapse of the oyster industry in Apalachicola Bay. During a week filled with U.S. Supreme Court-related news, many overlooked the significance of the ruling the court issued last week in the Florida-Georgia dispute: Taking a rare — if not unprecedented — stance, the court seemed to suggest that in water disputes between states, the health of an aquatic ecosystem can be considered alongside drinking-water and farming concerns. Florida’s odds did not look good as its case was headed to the Supreme Court. Ralph Lancaster, the special master appointed by the court to oversee most hearings in the case, said that though the bay had been affected by overuse of water upstream, it wasn’t clear that capping Georgia’s water use would solve the problem.But the justices disagreed, saying Lancaster used too strong a standard in evaluating whether adjustments upstream could solve problems in the Apalachicola Bay. The court remanded the case back to Lancaster who must reconsider Florida’s proposal and evidence.