Murphy has bagged a £42m deal to construct a 6 km sewer north of Bristol.
Wessex Water picked the contractor to design and construct the Trym Tunnel Relief Sewer.
The sewer, which is understood to be valued at around £42m, will be used to reduce flood risk north of Bristol and prepare the area for new development.
The flood relief sewer will be situated in the Trym Valley, improving overflow performance in the area and increasing water storage capacity.
It is one of the capital projects that make up Wessex Water’s £2bn investment programme to improve and maintain services between 2015 and 2020.
Work on the Trym tunnel will take place alongside the construction of the £15m Frome Valley sewer.
The 5 km Frome Valley project, also situated just north of Bristol, aims to boost water storage capacity in the area to enable thousands of new homes to be built.
The Trym Valley contract is the latest water deal to be won by Murphy, with the firm’s JV with Morrison Utility Services currently part of Thames Water’s eight2O alliance.
The JV is one of two teams delivering around £1bn of services work on the capital’s water network across AMP6, which covers 2015 to 2020.
Murphy declined to comment. CN has contacted Wessex Water for comment.