The need for more water has lead agencies within the Chino Basin in Southern California, that are responsible for water supply, to consider treatment of brackish or contaminated waters in the groundwater aquifer that were previously not considered viable sources. One agency that has faced this decision is the Chino Basin Desalter Authority (CDA). The CDA was created in 2001 and is responsible for implementing the Optimum Basin Management Program (OBMP) which is a broad program to manage the groundwater basin quality and quantity. The CDA, as part of its responsibilities, treats water in the Chino Basin aquifer to acceptable levels for potable consumption. The CDA currently has two facilities that use innovative treatment approaches to meet the water quality goals of the local agencies that receive the final product water. The local agencies which are part of the CDA have stipulated a treatment objective of less than 350 mg/l of Total Dissolved Solids(TDS) and less than 25 mg/l of Nitrate, far more stringent than the drinking water regulations imposed by the Department of Health Services.