Sydney Water has been known by a number names over the years including:
* Board of Water Supply and Sewerage (1888 - 1892)
* Metropolitan Board of Water Supply and Sewerage (1892 - 1925)
* Metropolitan Water Sewerage and Drainage Board (1925 - 1987)
* Water Board (1987 - 1994) which had also been the colloquial name for the organisation for much of its history in the 20th century, and persists among longer term employees and older members of the community to this day
* Sydney Water Corporation Limited (1995 - 1999)
* Sydney Water Corporation (1999 - present) - with "Limited" being dropped when the corporation changed from a state owned limited company to a statutory state-owned corporation.
Sydney Water's management suffered an enormous amount of criticism following the 1998 Sydney water crisis that was believed to be the large scale contamination of Sydney's raw water supply. The supposed contamination was heightened levels of cryptosporidium and giardia in Sydney's Warragamba Dam. This meant the public had to take extra steps in their own homes to ensure tap water was safe to drink. After this event, the Sydney Catchment Authority was created to manage Sydney's dams, raw water and catchment areas.
Its headquarters relocated to Parramatta in May 2009. The developer, Brookfield Multiplex, valued the project at A$176 million.
In early 2010 Sydney Water began operations of the Sydney Desalination Plant.