Questions around this news
What sewerage investigations and upgrade works are underway in Penang?
The release says investigations across Penang Island include CCTV inspections and, where needed, Ground Penetration Radar scanning to assess sewer lines, including those along Jalan Burma. It also reports upgrade and refurbishment work across a 297 km pipeline network, with RM284.7 million in works funded through the Sewerage Capital Contribution fund.
What caused the Jalan Burma sinkhole, and what repairs are planned?
According to the release, the sinkhole resulted from a collapsed 525 mm gravity sewer line after a joint dislocation. The affected road section was temporarily closed for public safety, and urgent repairs were entering their second day. The release said the repair work was expected to take another four days to complete.
What is Ground Penetrating Radar used for in sewer inspections?
Ground Penetrating Radar, or GPR, sends electromagnetic pulses into the ground and uses returning signals to reveal variations in underground materials or structures. It can help locate buried utilities or identify features that warrant further inspection. It provides information about subsurface conditions, but findings may need confirmation through other inspection methods.
How does a gravity sewer differ from a force main?
A gravity sewer carries wastewater downhill through a pipe, relying on gravity and the pipe’s slope. A force main is a pressurized pipe that carries wastewater pushed by pumps. The two types can be part of the same sewerage system, but their operating conditions and inspection or repair needs can differ.
September 24, 2025 -- PENANG: Indah Water Konsortium (IWK) Sdn Bhd has been, and will continue to, conduct investigations on the sewerage assets across Penang Island, with comprehensive CCTV inspections and, where necessary, Ground Penetration Radar (GPR) scanning carried out to assess the condition of the sewer lines, including those along Jalan Burma.
This project forms part of the Malaysian Plan under the Department of Sewerage Services (JPP). In addition, upgrading and refurbishment works are being implemented through funding from the Sewerage Capital Contribution (SCC) fund.
Across Penang Island, the pipeline network spans 297 km, and the upgrade and refurbishment works will amount to RM284.7 million, as part of ongoing efforts to address the aging sewerage infrastructure on the island.
As for the incident along Jalan Burma, IWK will continue its investigations to confirm the root cause of the recent collapse.
The sinkhole that appeared yesterday was caused by a collapsed sewer due to a joint dislocation, which can occur unexpectedly under heavy loads and not as a result of aging assets, as claimed.
For public safety, the affected section of the road has been temporarily closed, with urgent repair works now entering Day 2 and expected to take another four days to complete.
Upon IWK’s further investigation yesterday, IWK confirmed that the pipeline initially identified and claimed as a force main is actually located just upstream of the sinkhole. The collapse involved a 525mm diameter gravity line, not the force main as reported.
IWK is taking all necessary measures to address the issue promptly and safely, and thank the public for their patience and understanding during this time.
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ABOUT IWK
Indah Water Konsortium Sdn Bhd (IWK), is a sewerage services company owned by Minister of Finance Incorporated, Malaysia. IWK is responsible for providing sewerage services, operating and maintaining 9,133 existing sewage treatment plants and network pump stations, as well as more than 22,000 km networks of sewerage pipelines serving 32 million Connected Population Equivalent (cPE). Our core expertise spans Operations and Maintenance, Refurbishment, Planning & Policy Strategy, Engineering and Process Review, Project Planning and Management, Environmental Impact Assessment (EIA) and Hazard and Operability Studies (HAZOP), as well as Research & Development, and Training Services including module development. For more information, visit www.iwk.com.my
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In brief
Indah Water Konsortium (IWK) says it is investigating sewerage assets across Penang Island, using CCTV inspections and Ground Penetration Radar scans where needed. The work includes lines along Jalan Burma and is part of a Malaysian Plan project under the Department of Sewerage Services. Separate upgrading and refurbishment work, funded through the Sewerage Capital Contribution fund, covers a 297 km pipeline network and is valued at RM284.7 million. Regarding the Jalan Burma sinkhole, IWK says a sewer joint dislocation caused the collapse, while investigations to establish the root cause continue. The company says the damaged line is a 525mm gravity sewer located upstream of the sinkhole, rather than the force main previously identified. The affected road section is closed, and urgent repairs are underway.
Key takeaways
- IWK says inspections of Penang Island sewer assets include CCTV work and GPR scanning where required.
- Upgrades covering a 297 km network are valued at RM284.7 million and funded through the SCC fund.
- IWK attributes the Jalan Burma sinkhole to a joint dislocation in a 525mm gravity sewer.
- The affected road section is temporarily closed while urgent repairs continue.
