Water Quality Standard

The Department of Environment (DOE) initiated the development of Receiving Water Quality criteria for Malaysia in 1985 which aimed at developing a water quality management approach for the long term water quality of the nation's water resources.

The Environment Quality (Sewerage and Industrial Effluents) Regulations 1979 set out two standards of effluent quality, Standard A and B.

Effluent that is discharged upstream of a water supply intake should meet Standard A, while effluent that is discharged downstream has to meet Standard B. Effluent from sewage treatment plants need to be sampled at regular intervals and tested to ensure that it meets the required standards. Tests are carried out as part of a monitoring programme to ensure the efficient operation of treatment processes.


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