Dwr Cymru Welsh Water Dwr Cymru Welsh Water has become one of the strongest supporters of the Foundation's work. Both organisations share a common interest - clean water in rivers. This has led to several partnership projects mainly to tackle the issue of water quality and quantity, but also other areas such as restoring the ecology in the river Elan. Dwr Cymru Welsh Water is owned by Glas Cymru, a single purpose company with no shareholders and is run solely for the benefit of customers. Read more about the company here.