The scope of work will cover the expansion and upgrade of the sanitary sewer system at Yanbu Industrial City. It also includes the construction of a new lift station.
Bids were due to be submitted by 15 February. This has now been extended to 31 March. A pre-bid meeting will now be held on 1 March.
The project duration is expected to be two years.
Yanbu is on the Red Sea coast in the Medina province of Saudi Arabia, approximately 350 kilometres north of Jeddah.