The PSD is constructing an Aquifer Storage & Recovery (ASR) Well at Royal James Drive that is needed to replace drinking water supply lost due to saltwater intrusion into the 150-foot-deep Upper Floridan Aquifer. The well is expected to be in operation by the summer of 2013. The PSD has lost six Upper Floridan drinking water wells to saltwater intrusion, caused by the overpumping of the aquifer in the Savannah, Ga., region, since 2000. Studies show the intrusion is advancing at a rate of more than 300 feet a year from Port Royal Sound through the PSD’s service area. The utility can expect to lose five of its remaining six Upper Floridan wells by 2020.