PNSB operates and maintains the Sungai Langat, Klang Gates and Tasik Subang Dams in accordance with the Guidelines for Operation, Maintenance and Surveillance of Dams (Malaysia Inter-Departmental Committee on Dam Safety, 1989).

All three dams are equipped with the Dam Operations Control Curves to help our operators meet the demand for raw water release while conserving as much dam water as possible

As part of our safety surveillance programme, A Safety and Health Management System is being enforced and practised at all three dams. PNSB conducted half yearly major visual safety inspections every day to inspect all major dam structures, the mechanical and electrical installations and serves as a useful tool to detect any dam safety deficiencies and recommend appropriate corrective actions.