A joint venture of Interserve Construction and Doosan Enpure has won a £37m contract to upgrade Horsley water treatment works in Northumberland.

Northumbrian Water has awarded the Interserve Doosan JV a design and construct contract to increase treatment capacity at Horsley.

Construction is expected to start in summer 2016 and take about two and a half years to complete.

The new treatment facilities will be built alongside the current 1970s plant which will continue to operate until the new works are complete. Much of the old works will then be demolished.

Consulting engineers for the scheme are MWH and Turner & Townsend.