Wellington residents are being warned untreated wastewater could be discharged off the south coast as severe weather linked to Cyclone Vaianu continues to hit the region.
Wellington City Council said damage at the Moa Point Wastewater Treatment Plant means sewage could be released “without warning” through an outfall pipe into Tarakena Bay.
The council said the risk is driven by the combination of infrastructure strain and extreme weather conditions, with public safety and environmental impacts both under close watch.
Residents are being urged to stay indoors, avoid unnecessary travel and secure loose outdoor items as strong winds intensify. People are also advised to avoid forested areas such as Mt Victoria and other Town Belt reserves due to the risk of falling trees and branches.
Council guidance includes bringing in or tying down items that could be picked up by wind, turning trampolines upside down, and delaying rubbish bin placement if collection is scheduled.
Meanwhile, MetService has issued multiple weather alerts across the lower North Island.
An orange heavy rain warning is in place for the Tararua Range from late Sunday morning through to midnight, with 90 to 120mm of rain expected and peak intensities reaching up to 20mm per hour. Forecasters say rivers and streams could rise quickly, with a risk of surface flooding, slips and hazardous driving conditions.
A heavy rain watch also covers Wairarapa, Tararua District, and eastern and southern parts of Wellington, where rainfall may approach warning thresholds.
In addition, a strong wind watch remains in force for Wellington, Kāpiti Coast and Manawatū, with easterly winds expected to shift southwest and potentially reach severe gale strength in exposed areas.
Authorities are advising residents to clear drains and gutters ahead of the heaviest rain, avoid low-lying areas, and take extra care on the roads as conditions deteriorate.
