Penang’s two main dams have seen a significant drop in raw water storage, with levels falling below 30 percent as of last Monday.

Penang Water Supply Corporation (PBAPP) chief executive officer K Pathmanathan said the Air Itam Dam’s effective capacity was at 29.7 percent or 641 million litres out of a total capacity of 2,159 million litres.

The effective capacity of the Teluk Bahang Dam was...