Early sewage treatment plant are belong to the establishment of institutions, belonging to the jurisdiction of the municipal sector, its construction, operation and so on by the city management department is responsible for. Into the mid-to-late 1990s, most of the original sewage treatment plants have also been restructured, some belonging to the institutions, some belonging to the state-owned enterprises, but also foreign investment, private enterprises.
Currently sewage treatment plants, state-controlled water enterprises are responsible for municipal water supply municipal sewage and other water treatment market, private water enterprises are responsible for industrial wastewater treatment, comprehensive water environment remediation, water treatment equipment, membrane technology and other areas.