The Department of Envi-ronmental Protection concluded that sewers in Old Saybrook, Conn., were polluting the groundwater. Town officials and members of the Water Pollution Control Authority objected to the idea of replacing the system, calling sewers old technology and an economic burden. After targeting 15 beach communities where most of the pollution occurs, and inspecting each lot separately, officials turned to individual onsite systems with nitrogen reduction technology to fix specific problems. One selectman called the individual solution tremendously cheaper than sewers, by as much as 50 percent.The state passed special legislation to create a Wastewater Management District for Old
