Malaysia’s water story is a mix of abundance and pressure points. Water resources are described as abundant and available throughout the year, estimated at 580 km3/year (average 1977–2001), which is equivalent to more than 3,000 cubic meters per capita and year. Yet sector challenges remain. Wikipedia notes tariffs are low, making cost recovery impossible at current levels, so the sector continues to depend on government subsidies. It also highlights that water losses and per capita water use remain high despite demand-management efforts. These structural issues matter because they shape how states plan for future supply and why cross-border arrangements can become central to long-term resilience.
The Perak-Penang Water Project (P-PWP) is now one of the most concrete examples of how states are trying to shore up supply. Penang Water Supply Corporation (PBAPP) signed a conditional Bulk Water Supply Agreement (BWSA) with Prasarana Air dan Irigasi Perak Sdn Bhd (PAIP Perak). Penang Chief Minister Chow Kon Yeow said the agreement is expected to guarantee water supply sufficiency for Penang from 2032 to 2072, subject to conditions such as regulatory approvals and endorsement from the National Water Services Commission (SPAN), plus approval from PBA Holdings Bhd shareholders. Under the deal, Perak is willing to sell 300 to 500 MLD of treated water, supported by a new 500 MLD water treatment plant to be built, operated, and managed by Perak.
What the Agreement Reveals About Future Demand and Costs
The numbers inside the P-PWP agreement show both demand growth and the price of securing additional supply. Penang will pay an annual capacity charge of RM210 million. It will also pay a treated water charge of RM1.70 per m3 (1,000 litres), subject to review every three years. Chow said the projected total capital expenditure (CAPEX) for the dedicated P-PWP infrastructure in Perak is RM8.4 billion, and that PBAPP will not have to invest in that CAPEX because it will be borne by PAIP Perak. PBAPP also will not incur raw water fees, land acquisition costs, or operating expenditure (OPEX) to employ personnel to operate, maintain, or manage the infrastructure in Perak. This structure underscores how big-ticket infrastructure can be funded and recovered through long-term capacity payments.
Penang’s case also shows why states worry about tightening raw water options. Chow said Penang is a small state with no major in-state raw water resources left to tap for the 2030s. He said Penang’s water consumption was 865 million litres per day (MLD) in 2025, and is projected to reach 1,162 MLD or more by 2032 due to planned factory expansion projects and property developments. The Star described Penang as a water-stressed state with limited land area and water catchment resources, resulting in a high reliance on the Sungai Muda River in North Seberang Perai as its primary source of raw water to produce treated water. Chow also stressed the Perak supply does not replace Sungai Muda, but acts as a second major resource, particularly to support Seberang Perai Selatan (SPS) and Seberang Perai Tengah (SPT).
Beyond supply expansion, the performance of distribution systems is a critical piece of Malaysia raw water security, because every leak increases the treated volume needed to meet demand. Malaysia4u reports that Malaysia loses 34.4% of treated water before it is billed, and Perlis loses 62%. It adds that average tariffs were 22 sen per cubic metre under the average supply cost, and that tariffs were re-gazetted across the peninsula and Labuan with effect from 1 August 2025, rising in every state except Perak and Labuan. The same source notes Terengganu deteriorated from 32.8% in 2021 to 42.0% in 2025, and that Kedah, Kelantan and Perak worsened over the same period. These figures help explain why securing new sources, improving cost recovery, and reducing losses must move together.
What is the Perak-Penang water transfer agreement designed to achieve?
How much treated water could Perak supply to Penang under the deal?
What will Penang pay for capacity and treated water under the agreement?
Why is this deal being discussed as part of Malaysia’s raw water security challenge?
What do the sources say about water losses in Malaysia’s treated-water systems?
