Saudi Arabia’s National Water Company (NWC) has received expressions of interest from contractors for four contracts to transport water from the Wasia well field to Riyadh.

The first contract is for the wells and collecting lines. The winning bidder will design and execute 90 wells of nearly 400 metres in depth each in Wasia well field. Work includes the supply and installation of pumps and all materials needed for the well pipes.

The second contract is for a water treatment plant with a capacity of 360,000 cubic metres a day. The chosen contractor will design and execute all aspects of the project except the reverse osmosis system, which will be built at a later date under a separate contract.

The third part of the project comprises a pumping station and associated transmission lines. The winning bidder will design and execute the pumping station and transmission lines totalling about 110 kilometres in length to take water from the Wasia water plant to the capital. The transmission lines will have a diameter of 1,600-millimeters.

The final contract is for the design and execution of collecting and transmission lines of wells totalling 90km.