Page 69 - AirSelangor_Sustainability_Report_2021

to customers’ water supply. Disruptions from treated water
production typically occur due to scheduled and unscheduled
shutdowns of WTPs, whereas pipe leaks, pipe bursts, pump
house, and reservoir failures are the leading cause of disruptions
in the distribution network.
Air Selangor has implemented several initiatives to reduce the
number and duration of service disruptions including proactive
predictive maintenance works, early detection systems and
mitigation plans to further minimise service disruptions to
customers. Before the commencement of any maintenance or
upgrading works, a communication plan and a comprehensive
response plan are put in place. In case of major supply disruption,
either scheduled or unscheduled, the ERP will be activated to
facilitate the management of affected customers.

Incidents Number of Duration Average
Disruptions (hours) No. of
Affected
Accounts
Water Outages: 45 1,022.0 4,706
Pipe Size > 600mm
Unscheduled Pump 54 518.0 740
House Breakdown
Reservoir Issue 119 1,173.0 1,955

Unscheduled WTP 5 276.0 272,590
Shutdown
Scheduled 5 318.5 189,221
Disruption due to
Maintenance and
Upgrading Work
The leading causes of water supply disruption and the respective
actions taken to resolve the issues are explained in the following
sections.