Technology is helping Singapore keep its environment clean and healthy, said National Environment Agency's deputy chief executive Joseph Hui on Tuesday morning.

Mr Hui, who oversees technology and corporate development, said NEA officers were now using their mobile phones to identify mosquito larvae in the field, doing away with the need to send them to the laboratory for identification.

He gave other examples where the NEA was using technology. This includes improving its air-quality monitoring system to be able to track pollution plumes and forecast air quality, and using video analytics to nab high-rise litterbugs in the act.

He gave the keynote address at the two-day Sustainability, Environment and Energy Research conference which is being held at the National University of Singapore on Tuesday and Wednesday. Other topics that are being discussed include building technology, climate, and renewable energy.