Residents advised to avoid the the Porirua Stream from Grenada Village including Tawa to the outlet at the mouth of the Porirua Harbour until further notice
Residents advised to avoid the the Porirua Stream from Grenada Village including Tawa to the outlet at the mouth of the Porirua Harbour until further notice

Wellington Water crews stopped a wastewater overflow in Grenada Village which flows to the Porirua Stream. Residents are asked to avoid the the Porirua Stream from Grenada Village including Tawa to the outlet at the mouth of the Porirua Harbour until further notice.

As untreated wastewater entered the stream, these areas are unsuitable for the public for wading in, fishing, or gathering food from. Signs have been put up and sampling will be undertaken tomorrow morning.

Projects

Every year we carry out over 200 different projects in our four cities. These projects range from renewing a stormwater pipe in a single street to building a new reservoir. 

 

We are working hard to meet the region's growing water needs

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Featured Projects

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Mana esplanade (low res)

Mana Esplanade wastewater remediation project

Wellington Water, on behalf of Porirua City Council, will soon be working to address the wet weather overflows along Mana Esplanade.

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Walkway near Puaha and Tangare St, Titahi Bay

Titahi Bay water main

This is stage 2 of the Titahi Bay water main upgrade works. While the water main carries drinking water to Titahi Bay, the work will be carried out within the suburb of Takapūwāhia.

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Otari-Wilton’s Bush Wastewater Upgrade

A critical wastewater pipe which runs under Churchill Drive in Wadestown is under capacity.

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Project Updates

Cornish Street Wastewater Renewal
Last updated: Dec 22, 2025, 3:04 PM
Earlier this year, one of the graduate engineers from Wellington Water’s Network Operations team together with contractor Mac Engineering completed two projects on drainage pipelines – not the most glamorous work, but critical for the health of the wastewater network and our natural environment!
Moa Point Wastewater Treatment Plant Refurbishment Projects
Last updated: Dec 22, 2025, 9:31 AM
Thank you to the residents who attended the recent community meeting in early December.
Eastern Hills Reservoir, Lower Hutt
Last updated: Dec 19, 2025, 2:04 PM
Investigation work is expected to start in late January 2026, which will help inform the design of the new Eastern Hills Reservoir
Victoria Street Wastewater Rising Main
Last updated: Dec 12, 2025, 10:00 AM
The next stage of the CBD Wastewater Programme kicks off early in the New Year with works in and around the underground pump station between the Michael Fowler Centre and the Town Hall.
Willeston St Underground Pump Station
Last updated: Nov 14, 2025, 2:20 PM
In November our contractors wrapped up the works at Willeston and Victoria Streets, renewing the main wastewater pipe and connecting it to the pump station which drives wastewater from the CBD out to Moa Point Wastewater Treatment Plant.
Seaview Wastewater Treatment Plant Upgrades
Last updated: Nov 4, 2025, 1:47 PM
Whakawhirinaki Silverstream Pipe Bridge
Last updated: Oct 24, 2025, 3:58 PM
Following the successful connection of Whakawhirinaki Silverstream Pipe Bridge to the drinking water network, traffic management was fully removed from SH2 at Silverstream last week.
Porirua Central Wastewater Storage Facility
Last updated: Oct 17, 2025, 3:23 PM
We are on track for our mid-2026 completion date, with work on the storage tank and pump station nearly finished.
Rocky Point Valve Chamber Upgrade
Last updated: Oct 15, 2025, 3:01 PM
Cockayne Road water pipe renewal
Last updated: Oct 14, 2025, 2:38 PM

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