Mandated to eliminate wastewater stream discharge for compliance with the Inland Bays Total Maximum Daily Load, The Town of Millsboro embraced an innovative solution based on recycling, rather than disposal, of high quality treated effluent. The recycled water is used to recharge the local aquifer through seven rapid infiltration basins (RIBS). With a capacity of 1.2 MGD, Millsboro’s RIBs are the largest municipal system in Delaware. RIB systems require less land and have lower long term operating costs than wastewater disposal systems using irrigation. Hydrogeological testing has demonstrated that the performance of Millsboro’s RIB system exceeds the original design criteria.