Singapore-Delft Water Alliance, National University of Singapore, Singapore 117576.|Singapore-Delft Water Alliance, National University of Singapore, Singapore 117576.|Singapore-Delft Water Alliance, National University of Singapore, Singapore 117576.|Singapore-Delft Water Alliance, National University of Singapore, Singapore 117576.|Singapore-Delft Water Alliance, National University of Singapore, Singapore 117576.|Singapore-Delft Water Alliance, National University of Singapore, Singapore 117576.|Singapore-Delft Water Alliance, National University of Singapore, Singapore 117576.|Singapore-Delft Water Alliance, National University of Singapore, Singapore 117576.