Edinburgh Water Company and its successors have provided a public water supply and latterly sewerage and sewage treatment services to the Scottish Capital of Edinburgh. The original company was established in 1819 to supply drinking water. It did so until 1870, when it was taken over by a public Water Trust, with representatives from Edinburgh, Leith and Portobello. That in turn was taken over by Edinburgh Corporation and in 1975, responsibility passed to the Lothian Regional Council, as did the duty to provide sewerage and sewage treatment services. Both services were moved out of local authority control, and taken over by the East of Scotland Water Authority in 1996. The three Scottish regional water authorities were merged to form Scottish Water in 2002.