There is an ongoing untreated wastewater discharge from Moa Point. We strongly recommend the public stay out of the water on the South coast of Wellington. Do not collect kai moana.

Wellington Water is responding to a significant incident at the Moa Point Wastewater Treatment Plant which has resulted in untreated wastewater discharging into Tarakena Bay on the south coast.
Boil water notice for Pirinoa, South Wairarapa. Boil water before use including drinking, preparing food, making baby formula or brushing teeth.

Boil water before use including drinking, preparing food, making baby formula or brushing teeth. 

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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Clean well - Lyall Bay

Featured Projects

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20200812 WW WellingtonWaterImagery 128

Murphy Street Overflow

On behalf of Wellington City Council we are investigating ways to reduce surface flooding on Murphy Street.

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Ngauranga

Ngauranga Gorge project

Wellington Water, on behalf of Greater Wellington Regional Council, will soon be working to install an earthquake resilient pipe connection at Nguaranga Gorge. This key pipeline brings water from Hutt Valley to Wellington City.

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Newlands Watermain Renewals

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Project Updates

Seaview Wastewater Treatment Plant Upgrades
Last updated: Feb 13, 2026, 11:24 AM
Ngauranga Gorge project
Last updated: Feb 12, 2026, 4:03 PM
Work will soon be working to install an earthquake resilient pipe connection at Nguaranga Gorge. This key pipeline brings water from Hutt Valley to Wellington City. Work is scheduled to start on 2 March and completed by 7 July.
Eastern Hills Reservoir, Lower Hutt
Last updated: Feb 10, 2026, 4:47 PM
Geotech investigations have started along the Summit Road Firebreak and close to Balgownie Grove in Fairfield, Lower Hutt to inform the design of the Eastern Hills Reservoir.
Connaught Terrace water pipe replacement
Last updated: Feb 2, 2026, 3:37 PM
Western Wastewater Treatment Plant Refurbishment Projects
Last updated: Feb 2, 2026, 9:49 AM
The works to renew the current UV system at Western started as planned in January
Victoria Street Wastewater Rising Main
Last updated: Jan 16, 2026, 1:17 PM
Our contractors will be doing investigative work before the renewal of the 1936 wastewater pipe which runs along Victoria Street and Dixon Street.  
Cockayne Road water pipe renewal
Last updated: Jan 15, 2026, 9:41 AM
Works commenced at Cockayne Road and Imlay Crescent on Monday 12 January, with our contractors G P Friel Ltd excavating each end of the pipe to prepare it for cleaning.
Moa Point Wastewater Treatment Plant Refurbishment Projects
Last updated: Jan 6, 2026, 3:22 PM
Following these investigations, we can confirm that the majority of ‘dry weather’ discharges during October to early December were false positives.
Nathan Street Pipe Bridge Replacement
Last updated: Dec 22, 2025, 3:20 PM
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!

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