Air Selangor said the plant has resumed full operations at 6.30am Sunday (Sept 29) after it was shut down for 13 hours and 30 minutes that resulted in a daily production reduction of 357 million litres of water per day.
"The process of increasing the balance pool level and channelling it to the distribution system as well as the service pools at the affected areas are currently underway before water supplies can be provided for the staged recovery process," it said in a statement on Sunday.
On Saturday (Sept 28), Air Selangor said that the source of the contamination had been traced to a sewage treatment facility in Bandar Mahkota.
Some 372,031 users in the Petaling district, Hulu Langat, Kuala Langat and Sepang experienced unscheduled water cuts due to the contamination.
Air Selangor said water tanker trucks have been mobilised and 10 local service centres (PKS) will be activated at 8am today to assist affected customers until the water supply is fully restored.
The public are advised to refer to the Air Selangor app, visit its website www.airselangor.com, through phone call at 15300 or WhatsApp at 019-2816793/ 019-2800919 for more information and updates.
See below for the list of the 10 PKSs.