For all of us.
We’re the only water company of its kind in the UK. We don’t have shareholders, which means we put every penny back into looking after your water and our beautiful environment – now and for years to come.
Learn moreOpen Data Strategy
Executive Strategy
In this document, you will find key information about why we have created an Open Data Strategy and how we will approach the implementation of our open data initiative.
Download the documentGlas Cymru
Annual report and accounts
Welsh Water is owned by Glas Cymru, a single purpose company with no shareholders and is run solely for the benefit of customers.
Our Journey
to Net Zero
As one of the largest energy users in Wales, we need to adapt the way we deliver our services to allow us to deal with the challenges we face in the years and decades to come.
Latest news
13 June 2024
Welsh Water celebrates Volunteering Week
7 June 2024
Good progress made on reducing phosphorous in rivers as Dŵr Cymru spend £483m to improve services
31 May 2024
Issue 2: Penybont Wastewater Treatment Works Newsletter
23 May 2024
Penybont Wastewater Treatment Works Newsletter
15 May 2024
Dŵr Cymru Welsh Water launches Storm Overflow Map
25 April 2024
Welsh Water among first in industry to publish open data strategy
Change of Registered Address
Glas Cymru
Glas Cymru, the not-for-profit company which owns Welsh Water, announces that with immediate effect the registered office of the company and all subsidiaries in the Group has changed
Find out more