Where a property is provided water by a supplier who operates “wholly or mainly in Wales”, certain notifications to the supplier about a new tenancy are required. The water authorities are Dwr Cymru Welsh Water and Dee Valley Water. The legislation does not affect properties covered by other water providers. Still, some properties in the English counties of Cheshire, Gloucestershire, Herefordshire and Shropshire supplied by those two providers are caught. Despite Severn Trent Water supplying water to some properties in Wales, those properties are NOT caught by the legislation (because they do not supply water wholly or mainly in Wales).
