United Utilities complete extensive work around Haweswater to improve health of water and wildlife

United Utilities has completed extensive work to improve water flow into Haweswater reservoir in Cumbria, improving water quality and protecting aquatic wildlife in the process.

Haweswater supplies approximately 25% of the drinking water for the Manchester area, serving over 2 million people. Managing sediment ensures the reservoir's capacity is maintained, avoiding blockages, and ensuring a consistent water supply.

Each year, the water flowing through local routes to Haweswater naturally accumulates grit and gravel on the intakes and weirs. If left unaddressed, this build-up could impact both the volume of water reaching the reservoir and the health of fish and other wildlife in the area.

In total, 862 tonnes of sediment was removed across six sites, restoring natural sediment flow downstream. The plan helps river ecosystems that depend on sediment for nutrient cycling and habitat formation, benefitting aquatic species like trout, salmon and freshwater invertebrates – as well as keeping the eel passes clear.

Naomi Wright, Catchment Manager for Water Services in Cumbria said: “Haweswater is an important part of Cumbrian life, with many enjoying walks around the reservoir and enjoying all Haweswater has to offer. Not only is sediment removal important for restoring water flow into the reservoir, but it’s also vital for reducing the risk of flooding for our downstream communities.

“The Haweswater catchment controller team have worked hard to complete the works, taking time and care to protect the surrounding area. We’re pleased to say that the scheme is now complete, and you will be able to see a visible improvement when you visit our beautiful county and the Lake District, as well as a noticeable difference to the health of the environment and wildlife that call it home”.