The contract entails the execution of the second phase of the Desvío Arijón aqueduct In Santa Fe. Economic offers will be unveiled in approximately 60 days from now.
The attorney general said a decision will be made within two weeks. Additional charges against the former comptroller are also under study.
Spain-based Abengoa, the project's original concession holder, quit its contract at the end of last month.
The US$13mn project entails installing an aqueduct, a potable water plant and a water intake. The project is being financed by Kuwait's Economic Development Fund.
The authorization will allow for the state to open new avenues of funding for state water utility Sabesp.
The project will be funded by the local wine producers, but could also become a public-private partnership.
Representatives of three candidates agree on the need to cut red tape.
The company is seeking an experienced partner to develop its assets located in the Maricunga and Pedernales salt flats in northern Chile.