Mayor, ministers agree inquiry needed for Wellington sewage failure

Monday, 9 February 2026

Speaking after a meeting with the Prime Minister and Local Government Minister Simon Watts, Andrew Little says Wellington’s Moa Point sewage treatment plant needs an independent investigation.

Wellington mayor Andrew Little and Government ministers have agreed that an inquiry is needed into the causes of the “catastrophic failure” at Wellington’s Moa Point waste water plant.

Speaking outside Parliament after meeting with the Prime Minister and Local Government Minister Simon Watts on Monday, Little said there was total agreement that an independent inquiry was required “as a matter of public confidence”.

As for the type of inquiry, Little said he would take “the next few days to think about some of the suggestions that were discussed”. Options include a ministerial inquiry (which has the power to compel parties to provide evidence) or a non-statutory inquiry (which has no coercive powers and relies on witnesses’ cooperation).

“We agreed … that doing something that would lead to an investigation as quickly as possible is preferable, on the basis that it has the right expertise, independence, and the right powers to get the right information,” Little said.

Wellington mayor Andrew Little speaks to media after a meeting with Government ministers on Monday.

The inquiry may run while remediation works are carried out at the plant, with those works likely to take months.

“At some point, the programme of work to get it up and running will happen. But we’re told by Wellington Water that will be months away,” he said.

“But providing we can get an investigation set up as quick as possible, I’m confident that we can get a good understanding of the cause, so that when we do the remedial work we can design it in a way that we minimise the risk of this happening again.”

The timeframes are complicated somewhat by Wellington’s new water entity - Tiaki Wai - which is set to take ownership and operational control of the plant in July, when the Government’s Local Water Done Well scheme comes into force.

“That’s why it’s important that, from Wellington City Council’s point of view, we’re engaging with the authorities to make sure we get up and running as quick as possible, [so] that as the new owner takes over there is a continuity and consistency with the investigatory work and oversight of the remediation,” Little said.