Chongqing Water Group Co., Ltd. operates in water supply, wastewater treatment, sludge treatment and disposal, and engineering construction in China. It produces and supplies tap water, treats sewage and recycled water, and manages tap water and sewage treatment plants. The company also engages in municipal public works, building construction, water conservancy and hydroelectric engineering, electromechanical engineering, environmental pollution control, and related supervision, as well as manufacturing water supply and drainage equipment, selling materials, and installing pipelines and water meters. It treats domestic and industrial sewage, initial rainwater, and other wastewater to national environmental standards before discharge, and manages wet sludge from urban wastewater treatment plants using aerobic fermentation, co-firing, combined heat and power, and thermal drying. Formerly known as Chongqing Water Holding (Group) Co., Ltd., it was founded in 2001 and is based in Chongqing, China. It is a subsidiary of Chongqing Derun Environment Co., Ltd.