Three contracts for more than 30km of deep tunnel construction have been awarded by Singapore’s national water agency, Pub, for its new sewage system.
Pub’s Deep Tunnel Sewage System (DTSS) will be formed by more than 40km of deep tunnel and 60km of link sewers.
The first three contracts, valued at £840M, have been awarded to Ed Züblin, Leighton Contractors and a joint venture of Penta-Ocean Construction and Koh Brothers Building and Civil Engineering. Contracts for the remaining tunnels are expected to be awarded in 2018.
“The deep tunnels are an integral part of the DTSS and will ensure the sustainability and resilience of the used water network to facilitate large-scale water recycling in Singapore,” said Pub director of DTSS Phase 2 Yong Wei Hin. “We are pleased to be partnering with these three experienced contractors and lead consultant joint venture Black and Veatch and Aecom to construct this second phase of the DTS.”
Commissioning of the new network is expected to be completed by 2025.