Nigel Wylie, founder and director of Thrive Water, a Singapore-based water treatment solutions provider, was one of the participating mentors. His advice to beginners was to seek partnerships with bigger companies instead of trying to go at it alone since companies will be able to better package ideas and create a bigger impact.
Companies promoting game-changing technologies were also on display.
Read More10 technologies for the bottom of the pyramid
Among them was Medad Technologies, a Singaporean company that utilizes a hybrid mix of adsorption desalination (AD) and multi-effect desalination (MED) technologies to turn reject water from undesirable sources or saltwater into a pure drinking source.
Speaking at a media event, Medad CEO and Founder Joseph Ng said he hopes to commercialize the low-cost green technology within Asia, Gulf Cooperation Council (GCC) countries as well as the United States.
A key message driven home to these entrepreneurs was the importance of effective water management to a city's sustainability, especially water-scarce cities like Singapore.
"It's quite obvious that the next generation of urban planners cannot look at water solutions as a separate issue; they need to look at it at the start of the urban development process, not as an afterthought," said Maurice Neo, managing director of Singapore International Water Week.