SHAH ALAM, July 25 — The state has achieved its best performance to date, with no large-scale water supply disruptions since last year, particularly after the Raw Water Security Scheme (SJAM) project became operational.
State executive councillor for infrastructure and agriculture Dato' Izham Hashim said the achievement was made possible by SJAM's swift and effective response in maintaining a stable water supply despite instances of water pollution.
No water treatment plants (WTP) were forced to suspend operations, thanks to continuous monitoring that ensured they could continue without affecting consumers.
"SJAM has achieved a 100 per cent success rate. Since last year, there have been no water supply disruptions in Selangor.
"There have been pollution incidents, but they have not affected our water supply. We have activated SJAM 14 times.
"Since it became operational in June 2025, there has not been a single water disruption in Selangor. In fact, our water reserves have also continued to increase," he told Media Selangor.
SJAM is one of the flagship initiatives under the First Selangor Plan (RS-1), serving as a system to safeguard raw water sources against pollution and prolonged drought.
However, Izham acknowledged that implementing SJAM had presented various challenges, including land acquisition issues and the relocation of utilities, both of which required significant time and expenditure.
"We want to ensure our water sources remain free from pollution. Although SJAM has enabled us to manage these incidents successfully, it also increases electricity consumption for pumping and requires more treatment chemicals.
"As a result, operating costs rise, even though protecting our water resources is a shared responsibility. This remains one of our key challenges in managing clean water resources in Selangor," he said.
Izham added that the state will soon be home to the largest and most advanced water treatment plant in Southeast Asia, with a production capacity of 1,400 million litres per day (MLD) through the Rasau Water Supply Scheme.
The project aligns with RS-1's objectives to ensure a continuous 24-hour water supply while demonstrating the efficiency of Selangor's water management system in addressing pollution-related challenges.
"At present, Phase One of the Rasau WTP is expected to be completed by March next year. Once operational, Selangor will gain an additional 700 MLD of water capacity for future reserves," he said.
The Rasau Water Supply Scheme comprises the construction of Phase One and Phase Two of the Sungai Rasau WTP, each with a capacity of 700 MLD, with full completion scheduled by 2030.
As part of the project, nine former mining ponds covering 489 hectares have been converted into Malaysia's first dual-purpose Riverside Water Reservoir system, supporting both water supply and flood mitigation.
Izham noted that the state's water reserves would be able to last for up to six months during droughts through the combined reserves provided by SJAM and the Selangor Off River Storage Scheme (SORSS).
"We have reserves that can last for three months through SJAM, and with SORSS we can extend that by another three months. This means we can withstand up to six months without rainfall," he said.
SORSS was introduced last year as a rebranding initiative covering more than 100 reservoirs and former mining ponds across the state, allowing them to function as alternative water sources.
The RM320 million project is capable of providing uninterrupted clean water to more than 1.5 million consumer accounts in Selangor, as well as the Kuala Lumpur and Putrajaya Federal Territories.
