Singapore, March 18 -- Singapore's Coordinating Minister for Public Services Chan Chun Sing on March 17 said Singapore will need clean, renewable and sustainable energy solutions to address long-term water security challenges, stressing that this will remain a "critical survival challenge" for the city-state over the next 50 years.

Speaking at Singapore World Water Day and the launch of national water agency PUB's annual water conservation campaign, Chan noted that the country has the technology to "largely" process the water it needs. But Singapore's water dependency has now shifted to an energy dependency, he said.

While the ongoing conflict in the Middle East has emphasised the importance of the country's energy supply, Singapore's l...