The Public Utilities Board (PUB) was set up as a statutory board in 1963 to coordinate the supply of electricity, piped gas, and water for Singapore.
In 2001, PUB was reconstituted to become Singapore’s national water authority, overseeing the entire water loop. The sewerage and drainage departments from the then Ministry of the Environment were transferred to PUB. The regulation of electricity and gas industries, formerly undertaken by the PUB, was transferred to a new statutory board, the Energy Market Authority (EMA).
With the reconstitution, the Public Utilities Board is now known as PUB, the national water agency or PUB, Singapore's national water agency in public communication materials and non-legal documents.