About 1,150 employees work for the Massachusetts Water Resources Authority in Boston. Despite the organization’s size, it is very much like a tight-knit family, says Ria Convery, MWRA’s communications director. So on June 25, when a tragedy unfolded right outside the gates of its centerpiece, the Deer Island Sewage Treatment Plant, it didn’t take long for the MWRA family to come together. On that day, a woman walking her dog discovered the body of a young girl in a plastic garbage bag along the shoreline of Deer Island, a peninsula that juts into Boston Harbor. No immediate identification could be
