The regions were ordered by the provincial government to do an environmental assessment of the outfall pipe, which extends about one kilometre out into the lake.
Growers say they're being unfairly treated like factories, where sampling water from an outfall pipe tells you everything that's been added within four walls.
That modelling also showed that the receiving waters taking the effluent from the outfall pipe only required secondary treatment, according to the project team.
The utility company confirmed it was investigating the possibility of repairing the broken outfall pipe and that an update on the outcome of this investigation is expected.