City of Dallas's Central Wastewater Treatment Plant (CWWTP) is a conventional activated sludge plant with trickling filters. DWU Central WWTP is in operation for more than 100 years and has gone through various changes throughout those years. Most prominently, after the introduction of Clean Water Act, activated sludge was included to the treatment process along with trickling filters. DWU Central plant is divided in to three major sections: Dallas plant, White Rock plant, and Activated Sludge Plant. Wastewater flows from various sections of the City come through Cadiz pump station or via White Rock interceptors to both Dallas plant and White Rock plant. After the primary treatment (including bar screens, primary clarifications and trickling filters) at both of these plants, the flow is combined at Activated Sludge Influent Pump Station (ASIPS) which is then diverted to Complex A and Complex B for activated sludge process. Effluent of activated sludge process passes through secondary clarification and then disinfected using gaseous chlorine in chlorine contact chambers. After disinfection, effluent is filtered through dual-media gravity filters and de-chlorinated before discharging into the Trinity River. DWU Central plant pumps its sludge to DWU Southside wastewater treatment plant for the anaerobic digestion. DWU Central plant provides Type II reuse water to a city park and two city-owned golf courses. The reuse water has residual chlorine per requirement.