The current phase of the waste water treatment plant project is expected to be completed in the next few months.
In answers to questions from the Leader of the Opposition, Environment Minister John Cortes explained Eco Waters Ltd were the preferred bidders, and were expected to receive a full advance works contract.
Dr Cortes said a multi-disciplinary team was working with preferred bidders to clarify technical and commercial details.
He said considerable progress had been made but it was impossible to set a time-frame for the final completion of the project.