Welcome to Dŵr Cymru Plans – here you’ll find everything you need to know about our plans for 2025 and up to 2030.
And you’ll see examples of the projects in your community as they unfold.
At Welsh Water our customers and our communities are at the heart of all we do. Find more through our interactive map which helps you navigate to the plans and projects taking place in your community.
Recent News
Average Welsh Water bill to increase by 4.8% in 2026-27
The average Dŵr Cymru Welsh Water household customer bill will increase by 4.8% in 2026-27, from £652 to £683.
The price rise will help ensure we deliver our aim of providing world class water services to the communities we serve.
Following the price rise Welsh Water customers will on average pay less than £2 a day for their water and wastewater services.
This increase is among the lowest for water and sewage companies across Wales and England.
Between 2025-30 more than £4bn will be invested in our services – double the investment of 2020-25 – and includes £2.5bn on projects to improve the environment.
The investment will fund work to reduce pollution, upgrade and build new vital assets, reduce leakage, and improve water quality.
Welsh Water serves 3m people across Wales, Herefordshire and parts of Deeside. Our infrastructure includes more than 36,500km of sewers, 834 wastewater treatment works, more than 27,500km of water mains, 65 water treatment works and 92 reservoirs.
Our vulnerable customers can benefit from the company’s social tariff schemes that help make bills more affordable.
Welsh Water’s not-for-profit model allows any surplus money to be re-invested, providing £14.7m of social tariff provision with the capacity to assist 147,000 customers.
Click here to see our recent press release.
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Welsh Water’s investment and performance: April to September 2025
We recently announced our half year results which outlined an investment of £650m in 2025/26, the first year of our 5 year investment plan. Between 2025 and 2030 we will invest a total of over £4bn, with £2.5bn of that sum invested in the environment.
The money will deliver improvements for customers, communities, and the environment, such as the recently opened £13 million wetland storm overflow at Pont-y-felin in Torfaen – the first of its kind in the UK. By harnessing the natural filtering power of wetlands, the site is already reducing the company’s impact on local rivers and setting a model for future sustainable investment.
£13 million wetland storm overflow at Pont-y-felin in Torfaen
Our Business Plan represents a major step up in investment over the next 5 years, which reflects not only important business objectives, but also the improvements our customers want to see.
The Business Plan for 2025-2030 outlines our commitment to deliver record investment, allowing us to make significant improvements to the services we provide to our 3 million customers throughout Wales and parts of England.