Its director Hasrolnizam Shaari said water supply during a drought would be obtained through three methods, namely dams, reservoirs and groundwater, each of which could last for two to four months.

Based on the three methods, it would be able to supply 5,000 million litres of water a day, which is equivalent to the current production volume.

“We need cooperation and commitment from all parties to continue to maintain water quality, by preventing incidents of pollution,” he told reporters during an event at I-City here today.

He also said that cloud seeding would be the last option to be used.

On the Zero Discharge Policy (ZDP), Hasrolnizam said it would be implemented by August, subject to getting the green light from the state government.

“We want to ensure the commitment of all parties in terms of daily water discharge, especially in factories or other commercial premises.

“The cost or payment for the ZDP is still being discussed in engagement sessions with stakeholders and factories. It will be used for environmental conservation purposes, including the maintenance of rivers, drains and estuaries,” he said.

The ZDP compels factories to pay for whatever they discharge into a river, even if it does not cause pollution.