Scottish Water's £100m project won the CIWEM Urban Drainage Group's WaPUG Prize at the institution's annual conference in Blackpool on 07 November.
Dawn Lochhead, Scottish Water's flooding manager, accepted the award on behalf of the utility.
She said: "Scottish Water is delighted that the Shieldhall Tunnel, which was the flagship project in the biggest investment in the Glasgow area's waste water infrastructure since Victorian times, has won the WaPUG Prize, which celebrates our rich heritage and the leaders and technologies of the future.
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"Its success is testament to the skills and hard work of everyone involved in the planning and delivery of a fantastic project which is now helping to improve river water quality in the Clyde and tackle sewer flooding in the south of the city."
This award is the second in as many months for the Shieldhall Tunnel project, after it received the Infrastructure Award at this year's Saltire Infrastructure Awards.
The tunnel stretches for 3.1 miles from Craigton to Queen's Park via Bellahouston and Pollok parks.
It was constructed using a state-of-the-art tunnel boring machine (TBM) over a two year period.
(CM)
