The council pleaded guilty at an Environment Court hearing.
Interestingly new council chief executive Monique Davidson was asked if there had been any discussion with the regional council about avoiding such court action in the future.
She responded that both parties had accepted there were lessons to be learned from the situation.
"We now have two new chief executives and [Hawke's Bay Regional Council chief executive] James Palmer and myself have been working hard on building a strong relationship," she said.
That sounds fair enough and another point to make is that this issue has been largely inherited by this new CHB council.
However, focusing on building a strong relationship with the regional council to avoid being prosecuted in future is missing the point a little.
There is a straightforward way the council can avoid being prosecuted, simply ensure that the wastewater discharged from the plant complies with all regulations and standards all the time.