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Pouring a glass of water

Delivering clean water for Liverpool

Our upgrade and expansion of the Liverpool Wastewater Treatment Works will meet the clean water needs of over 600,000 households and deliver environmental benefits to the surrounding area.

  • Service 1

United Utilities

  • Service 1

Specialist design

  • Service 1

Galliford Try and Atkins

Key Benefits


litres of clean water to the residents of Liverpool


man hours without a RIDDOR incident

Reduced pollution risk to the coastline with bird habitats maintained

Increasing asset life by 20 years


cost savings through the use of BIM


Our innovative approach, using Building Information Modelling (BIM), delivered a cost saving of £1 million in deploying the new assets.

Costain is working as part of a consortium with Galliford Try and Atkins to deliver a £200 million contract to upgrade and expand Liverpool Wastewater Treatment Works Asset Management Period [AMP] 5. Early on, we recognised the only way the project would be successful was to deliver it as one team.

We used BIM to come up with a space-saving stacked design that allows the plant to fit inside the dock, minimising the impact on the adjacent world heritage site. The innovative design will also enable the plant to be decommissioned and taken down at the end of the asset life without damaging the dock.

The River Mersey has always been so important to the people of Liverpool and it’s reassuring to know generations will now benefit from its cleaner water.

Gary Millar, The Lord Mayor of Liverpool

Contact and social


Gerard Shore, Sector Director
0161 910 3444
[email protected]