Introducing Hafren Dyfrdwy

Severn Trent Water is bringing together all its Welsh customers into a single company for the first time from July 1.

The new company, called Hafren Dyfrdwy, which means Severn Dee, the two major rivers in the area, will bring together all the Welsh customers previously served by Severn Trent and by Dee Valley.

That means, for the first time, the 35,100 homes and 3,900 businesses in Powys and Monmouthshire who are currently Severn Trent customers will join with current Dee Valley customers in Wales to be served by Hafren Dyfrdwy. The 49,700 homes who are currently Dee Valley customers in England will then move to Severn Trent.

The new company will be headquartered in Wrexham and will be dedicated solely to Welsh customers. It will offer current Dee Valley customers a full 24/7 customer service for the first time, as well as introducing new channels such as social media and webchat, and there will be a dedicated team based in Wrexham to serve business customers in Wales.

The main difference between Welsh and English customers relates to business customers, where there is competition in the English market which means that businesses can choose their water retailer. In Wales, only businesses which use 50MLD or more water a year are able to do that. It means that business customers in England which were previously served by Dee Valley will enter the market on July 1 and will be able to pick and choose their supplier for the first time.

Official drainage and water searches throughout the region will be provided by Severn Trent Searches.

For more information on Hafren Dydfrdwy, customers can go to