Bids are due in August for two contracts in the $270 million Yesilcay water supply project for Istanbul, and bids for a water treatment plant are also expected soon. The client is the State Hydraulics Works (DSI).

Bids were due to be submitted on 1 August by a shortlist of 11 companies for the Sungurlu-Isakoy regulators, tunnel and open canal construction works, which will be around 80 kilometres east of Istanbul. The shortlist includes Sezai Turkes-Feyzi Akkaya, Yuksel, Kiska, Tekfen, Kanalet, Callioglu, Dogus, Guris, ATA, Aydlner and Garanti Koza, all local, contracting sources say.

Bids from a mainly local shortlist are due on 28 August for the manufacture of prestressed concrete cylinder pipes and special parts, including the rehabilitation of a DSI pipe plant at Tuzla. The shortlist includes Aike, Yuksel, Kiska, Aydiner and the US' Price Brothers.

Bids are expected to be invited soon from a shortlist of around eight ventures for the construction of a water treatment plant at Emirli with an installed capacity of 500,000 cubic metres a day. This is the largest portion of the Yesilcay project, which aims to supply about 145 million cubic metres a year of water for a population of about 1.5 million.

The project will be funded by loans totalling around $160 million from the Kuwait Fund for Arab Economic Development. Consultant to the DSI is a venture led by the UK's Sir Alexander Gibb & Partners.