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“Very small risk” from discharge of sewage into Titahi Bay

News from Wellington Water
A wastewater bypass discharge has occurred that may affect Titahi Bay and associated shellfish gathering areas near the discharge point at Rukutane Point.

From time to time there is a need to discharge some partially treated (screened) wastewater along with the fully treated wastewater, in particular when there is heavy rain and there is too much water in the treatment plant.

A partially treated discharge is when a small portion of the wastewater ‘skips’ a component of the treatment process. This partially treated wastewater is mixed with the fully treated water and the public health risk from these discharges is very small.

As the city has grown, the frequency of these discharges has increased. The planned upgrades to the Porirua Wastewater Treatment Plant will address this issue.

As per Regional Public Health guidelines, swimming or aquatic activities are not recommended for 48 hours after heavy rain.