Weir Westgarth, Ltd. operates as a desalination and offshore water treatment contracting company. The company provides feasibility studies, project design, and contracting services. It also offers desalination plants, and water and power related systems. The company was founded in 1962 and is based in Glasgow, the United Kingdom. As of July 08, 2005, Weir Westgarth, Ltd. is a subsidiary of Veolia Water S.A.