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Costain to work on 16 Severn Trent sites as part of an £80m package

Spernal Wastewater Treatment Plant in Redditch

15 September 2023

  • Contracts include work to improve wastewater quality and protect wildlife
  • Company will use design, construction and consultancy expertise to assist with renewal and refurbishment projects

Costain, the infrastructure solutions company, will use its environmental expertise to work on 16 sites in Severn Trent’s portfolio. The work, which is worth £79.83m, is within the previously announced framework agreement and part of Severn Trent’s Capital Delivery Framework. It will be delivered over the next four years, straddling both the existing and new regulatory periods (AMP7 & AMP8).

Twelve of the sites will involve Costain working to improve the quality of wastewater, for example by removing phosphorus as part of the Water Industry National Environment Programme (WINEP). Three of the sites will involve work to protect elvers (juvenile eels) from entering river water intake pipes as part of compliance with The Eels Regulations.  The final project is the design and construction of a new disinfection contact tank at the Frankley Water Treatment works which serves Birmingham and secures the resilience of this water supply.

Sam White, Costain’s managing director of its natural resources division, said: “We’re delighted to be helping Severn Trent with their sustainability improvements. It’s hugely important to both companies that we do everything we can to protect the environment, as well as offering reliable and secure water supplies to customers.  The contract demonstrates the strength of our relationship with Severn Trent and Costain’s pedigree in projects of this kind.”


Enquiries: Jemma Savage, Headland

[email protected]

[email protected]


Notes to Editors

About Costain

Costain helps to improve people’s lives by creating connected, sustainable infrastructure that enables people and the planet to thrive. We shape, create, and deliver pioneering solutions that transform the performance of the infrastructure ecosystem across the UK’s energy, water, transportation, and defence & nuclear markets.

We are organised around our customers, anticipating and solving their challenges and helping to improve performance. By bringing together our unique mix of construction, consulting, and digital experts we engineer and deliver sustainable, efficient, and practical solutions.

For more information visit www.costain.com