PETALING JAYA: Water supply to 84 of the 274 areas affected by the unscheduled water disruption has been restored on Wednesday (Oct 7).
Air Selangor, in a statement, said the restoration constituted 31% of the water supply recovery.
As of 11am, the Hulu Langat area recorded 58% water supply recovery, while Kuala Langat and Petaling recorded 55% and 43% water supply recovery respectively.
On Sunday (Oct 4), the Sungai Semenyih and Bukit Tampoi water treatment plants were shut down after odour pollution was detected beyond the permissible thresholds.
The Sungai Semenyih water treatment plant resumed operations after samples tested at its intake point recorded 0 TON (Threshold Odour Number) on Oct 6, and water supply was then channelled to the users in stages.
Meanwhile, the Human Rights Commission of Malaysia (Suhakam) called for effective enforcement of the law, including stiffer penalties for perpetrators of water pollution.
"The recent Sungai Semenyih pollution has caused disrupted access to water for 309,687 consumers in 274 areas including Petaling, Hulu Langat, Kuala Langat and Sepang.
"This came about almost a month after the recent Sungai Gong pollution in Selangor in September.
"The recurrence of the incident in such a short period reflects the seriousness of the issue, and this calls for prompt measures to be taken by the government to protect public health and the environment," the statement said.
Suhakam will be organising a Forum on Right to Clean Water in Malaysia to discuss the gaps and challenges in realising the right to clean water in Malaysia, among other things.
The Forum is scheduled to be held on Nov 18.