This standard stipulates the maximum allowable discharge limits of 75 types of water pollutants based on the destination of sewage discharge. This standard applies to the discharge management of water pollutants by existing units and self-employed individuals within the jurisdiction of Beijing Municipality, as well as the environmental impact assessment of construction projects, the design and completion acceptance of environmental protection facilities in construction projects, and the discharge management after they are put into production.
DB11/ 307-2005 Referenced Document
GB 15562.1 Graphical signs for environmental protection--Discharge outlet(source)
GB 18918-2002 Discharge standard of pollutants for municipal wastewater treatment plant
GB 3838-2002 Environmental quality standards for surface water