RCDI is a recirculating DI Water System that does not require a tank. DI Water is recirculated through the DI Tank and facilities loop to keep the water constantly recirculating. Allowing the water to constantly recirculate provide the water with multiple passes through the DI Tanks to improve water quality. As water is used in the process, make up water is automatically added into the loop. The RCDI is a cost effective tool to generate high quality DI water.