North Midland Construction has won a joint venture (JV) infrastructure contract worth over £100m for Severn Trent Water.
The project, which forms part of the Birmingham Resilience Project, will involve design and construction of a new water treatment plant at Frankley.
Work is anticipated to begin in the third quarter of 2017 and be wrapped up within three years.
North Midland CEO John Homer said: "This is a fantastic flagship project to be awarded with one of our key customers and is a testament to the specialist capabilities that our group have developed."
North Midland bagged the contract after an Interserve/Kier JV withdrew from the project and expects its 2017 results to be “ahead of management expectations” owing to the contract.