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United Utilities invests £2.6m to upgrade the sewer network on the Wirral

28 Apr 2026

United Utilities, the North West water company, is investing £2.6m in upgrades to the sewer network on the Wirral.

Work is underway on Noctorum Avenue in Wirral to improve existing infrastructure and increase sewer capacity. This will help to store excess stormwater in periods of heavy rainfall and improve water quality in the River Fender, and River Mersey.

Over the next four months, new drainage and a new sewer will be installed. This will run from Pine Tree Avenue to the junction with Beryl Road, connecting to the existing surface water sewer. Some existing pipes will also be upgraded to a larger size and new manholes added.

The project will be delivered in three phases. Once all phases are complete, the upgraded network will be able to store an extra 131,000 litres of water – equivalent to almost 900 bathtubs – before it is treated at Birkenhead wastewater treatment works.

Steve Kenyon, County Business Lead for Wastewater in Merseyside, explained: “This essential upgrade to the sewer network in Merseyside highlights our ongoing commitment to improving infrastructure, while looking at how we can improve overall rainwater resilience in the local area.  The extra stormwater storage will be a welcome addition and benefit both the community, and the environment."

A construction compound has been set up on Olivia Close which will be used for the duration of the works. Working hours will be Monday to Saturday, 8am-5pm.

Steve continued: “To keep our staff and the public safe while we complete the works, temporary traffic management will be in place on Noctorum Avenue. We want to thank our customers for their patience while we complete the works.”

The project forms part of United Utilities’ wider commitment to deliver the largest investment in water and wastewater infrastructure in a century across the North West. Between now and 2030, the company will invest more than £13.5 billion to protect and enhance more than 500km of rivers, lakes and bathing waters, while safeguarding drinking water supplies for millions of customers.