About Us

Our story

Hafren Dyfrdwy also means Severn Dee, the coming together of Dee Valley Water and Severn Trent to form a new water service for our customers in Wales. We're committed to keeping bills low and providing fresh water to you, for generations to come.


Wonderful on tap

We think water’s wonderful. It plays a critical role in all our lives.

It’s the shower that wakes us up, the hot bath that relaxes us before bed. We cook with it… grow gardens with it… have fun with it. Oh yes, and it keeps us alive!


Whether it’s supporting local businesses, offering a great day out at our reservoir sites or investing in the young people in our region, we've an important role to play.


How we’re dealing with the risks posed by climate change, pressure on water supplies, switching to greener energy and improving biodiversity.

Our Social Purpose

At Hafren Dyfrdwy, we believe that being a socially purposeful company is a core principle.

We are a company guided by a clear public service ethos that also draws on the benefits of private sector investment to improve services.

We seek to give our customers the best of both worlds.

Our responsibilities and plans

Regulatory library

A library of Severn Trent's most recent and historic documents.