Sewage is overflowing into Porirua harbour after a wastewater main on State Highway One burst again.
The pipe first burst in the heavy rainfall event on Saturday. Photo: RNZ/ Caitlin Cherry
The pipe - between the Aotea turnoff and Paremata - initially failed on Saturday during the heavy rainfall event which hit the Wellington region.
Although it was repaired on Sunday, investigations showed it remained in a fragile condition.
Wellington Water, who oversee the region's water network, said this evening's heavy rainfall had caused a further failure, and some wastewater is now entering the harbour.
Crews are out trying to minimise the overflow, with others preparing throughout the night to undertake a further repair in the morning.
Members of the public are advised to avoid contact with coastal water in the area.
The burst could also derail plans to re-introduce the stranded orca calf, Toa, back into his sea pen.
Earlier this evening, the Department of Conservation stated the orca was being moved for health reasons.