Northumbrian Water is investing more than £10 million in upgrades at Chilton Lane Sewage Treatment Works (STW), near Ferryhill, as well as its sites at nearby Fishburn and Bishop Middleham.

Photo: Bishop Middleham Sewage Treatment Works
All three of the works release treated water back into the Skerne catchment. The water company said the enhancements to the three County Durham treatment works will help to protect water quality in the River Skerne.
A further £4.5 million is being invested at Sedgefield Sewage Treatment Works, while work starts this month on a £1.3 million project at Bishopton STW, both benefitting water quality in the neighbouring Billingham Beck catchment.
Work started in the summer at Bishop Middleham, while the other three projects are set to begin on site in December and January.
The Chilton Lane, Bishop Middleham and Bishopton work will be carried out by the water company’s partner, Mott MacDonald Bentley (MMB), with Galliford Try delivering the projects at Fishburn and Sedgefield.
The projects will enhance the performance of the treatment works, as well as the quality of the final effluent that is returned to the environment, and also boost the resilience of the company’s wastewater services across the area. Work is anticipated to complete in Bishop Middleham and Bishopton in early 2024, with the other three likely to be finished in Autumn 2024.
The investment at Chilton Lane adds further environmental protection to the sewer network in the area, building on a £60,000 pipe restoration project earlier in 2023 to the north of the site. The earlier work was delivered by Northumbrian Water and its partner Esh-Stantec.
David Groark, Northumbrian Water’s Project Manager, said:
“This investment of more than £15m will help to protect the local water environment in the County Durham and Darlington area by making our treatment processes even better.”
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