en.Wedoany.com Reported - United Utilities has announced plans to build a 30-meter diameter underground rainwater storage tank near Lake Windermere, England's largest lake, to divert sewage pollution from the lake. The storage tank will have a capacity equivalent to four Olympic-sized swimming pools.
Lake Windermere, located in the Lake District of Cumbria, is a UNESCO World Heritage site. The lake is 18 kilometers long and 1.6 kilometers at its widest point, known as a ribbon lake due to its narrow shape. It is home to native wildlife such as Arctic charr and is a popular swimming spot. However, like many waterways in the UK, it has long suffered from sewage pollution. The campaign group "Save Windermere" has been pressuring water companies and the government since 2021 to stop all sewage from entering the lake.
In November 2024, The Observer reported that seven United Utilities wastewater treatment plants and pumping stations in the Lake District were accused of illegally discharging sewage on 501 days between 2018 and 2023. After years of data collection, parliamentary lobbying, legal action, and pressure from activist groups, United Utilities CEO Louise Beardmore made a public commitment to clean up the lake during a recent conversation with "Save Windermere" founder Matt Staniek at the Lake District Book Festival. Beardmore acknowledged that sewage is the main driver of the lake's problems and stated that the company would "go beyond current investment" to "restore the lake to as clear and pristine a state as possible."
United Utilities announced in 2024 that it would invest £200 million in the Windermere catchment over the next four years to reduce storm overflow discharges and upgrade local wastewater treatment plants. The storage tank project is part of this plan. According to the company, the underground storage tank will be part of a tunnel project, helping to reduce the frequency of storm overflow operations in the area, with pollutants being transported via pipelines for treatment elsewhere. Subject to obtaining necessary planning permissions and regulatory approvals, the project is expected to start in 2027 and be completed by early 2030.
In an interview with The Times, Beardmore stated that one of the options being studied is building an intercepting sewage tunnel around the lake to convey all discharges to an upgraded treatment plant. In recent years, illegal sewage discharges by water companies in England and Wales have become increasingly severe. The charity "Surfers Against Sewage" reported in 2025 that nearly 600,000 sewage discharges were confirmed in 2024. A BBC investigation also found that over 2,000 properties across London had been discharging untreated sewage into rivers due to misconnected drainage systems.
This article is compiled by Wedoany. All AI citations must indicate the source as "Wedoany". If there is any infringement or other issues, please notify us promptly, and we will modify or delete it accordingly. Email: news@wedoany.com
