Around 1,000 sensors are to be planted throughout the island nation to track everything from air quality and water level to public safety. The sensors will also include surveillance cameras in Little India and Geylang, as well as water level sensors in the Singapore River and drains to monitor flooding. The rollout is part of the government’s “smart nation” plan, as expected to be completed by the end of next year. Trials are currently taking place in the Jorung Lake District.