No start date has been set for construction of the new plant, with a number of key issues still to be resolved.
These include getting a new short-term consent to discharge waste through the South Beach outfall.
That hearing is set down for Monday and Tuesday next week.
Next up will be deciding how the city will fund the $39 million project.
The work will be loan funded, but that will have a substantial impact on rates. And the key influence on the rates bill will be how much the city's wet industries are charged to discharge their waste into the system.
The council will meet at a later date to consider the funding options.