Public Utilities Board Singapore' of Singapore (PUB) planned to develop the project of 'The Deep Tunnel Sewerage System Phase 2 - Tuas Water Reclamation Plant', which was also know as 'Tuas WRP' in Tuas, Singapore. McConnell Dowell Co Ltd was the site development contractor. CH2M Hill Co Ltd was the design & supervision consultant. The project covered the construction of a used-water treatment facility with an initial total capacity of 800,000 cubic meters per day (176 MGD) and a NEWater treatment facility with the capacity of 114,000 cubic meters per day (25 MGD). The used-water treatment facility was further designed to be divided into domestic used water module (650,000 cu.m/d) and industrial used water module (150,000 cu.m/d) to treat used-water separately for different use. The project would receive used water flows from the western part of Singapore by gravity via two separate deep tunnels, one to deliver domestic used water and another to convey industrial used water. The project was designed to be the largest Membrane Bio-Reactor (MBR) facility in the world. Up to 85% of NEWater from domestic used water would become recoverable once the project went operation. It would be integrated with NEA's IWMF project to leverage on water-energy-waste nexus. The project was cooperated with international companies and located in country along Belt and Road Initiative.