The Ingenieur Vol 57 January-March 2014 The Ingenieur Vol 57 January-March 2014 | Page 67

indicate that this river can only adequately meet Penang’s raw water needs until 2020. Without another raw water resource, it is impossible for PBAPP to sustain continuous good water supply until 2050. In fact, PBAPP has identified a second raw water resource for Penang – the Perak River in the neighbouring state of Perak. Penang’s proposal for tapping this additional resource involves the pumping of raw water from this river through a new water tunnel built across the highlands. The water will then be discharged into the Ijok River, a tributary of Sungai Kerian, at the southern border of Penang, for drawing and treatment in PBAPP-managed plants. As Penang has migrated to the National Water Services Re-Structuring Scheme in 2011, the funding for this proposed inter-state “Sungai Perak Transfer Water Resources Scheme” is to be borne by the Federal Government, while Penang will have to invest in the treatment works. As Penang is an island state, PBAPP will also explore the viability of saltwater desalination, as implemented successfully in Singapore. Although desalination costs will undoubtedly be higher, the application of this technology may well guarantee self-sufficiency for Penang well into the future, without the inherent risks and threats of inter-state water dependency. PBAPP strives to manage water supply sustainably for Penang’s future. 65