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WASTEWATER LEAK - PROSSER STREET, TITAHI BAY
Wellington Water crews responding to a wastewater leak on Prosser Street, Titahi Bay

Our team have responded to a wastewater leak at the corner of Prosser Street and Titahi Bay Road. 

Excavation is currently underway. The pump station is operating but will need to be shutdown before repair. Plans to divert the wastewater flow away from the pipe is being developed as the pipe will also need to be shutdown before repair.

There has been an earlier discharge into the stormwater network. This has now stopped with sucker trucks managing the flow, preventing wastewater entering the stormwater network. Signage has been placed at the outlets into the harbour and water quality sampling will be underway.

Traffic management has been set up on Titahi Bay Road. One southbound lane has been closed.
Rocky Point
Water Networks / Rocky Point Valve Chamber Upgrade

Rocky Point Valve Chamber Upgrade

On behalf of the Greater Wellington Regional Council, we are installing seismically resilient pipe connections to the Rocky Point valve chambers on the Wainuiomata to Wellington water pipeline.
Overview
Current status
Background
All Updates
More Improvements
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From July until October 2025, construction work will be taking place adjacent to SH2 between the BP truck stop and the Horokiwi turnoff near Petone, to replace valves in the water main pipe which will make it more resilient to potential earthquake damage.

Start Date
14/07/2025
Contact:

If you have any questions about this work, please contact:

Wellington Water, 04 912 4400

Latest Updates

15/10/25

24/09/25

11/09/25

From July until October 2025, construction work will be taking place adjacent to SH2 between the BP truck stop and the Horokiwi turnoff near Petone, to replace valves in the water main pipe which will make it more resilient to potential earthquake damage. 

Wellington Water in partnership with Brian Perry Civil will be installing seismically resilient pipe connections at two points in the pipeline which carries drinking water from Wainuiomata into Wellington City. 

All lanes on both sides of SH2 will remain open during the construction, however there is a single lane over-night closure for the safety barrier relocation works. There will be no speed reductions in place. Signage will be in place to alert drivers. 

This pipeline feeds drinking water reservoirs in Wellington City, so residents should not experience any outage of water due to these works. 
This project will be followed by work at the Ngauranga Gorge intersection to install further valves. This will start in March 2026 for a period of about 16 weeks to beginning of July. 

 

Work adjacent to SH2 between the truck stop and Horokiwi turnoff, is a part of Wellington Water and Greater Wellington Regional Council’s work to safeguard our water supplies in the event of a large earthquake.

The pipeline bringing water from Wainuiomata into Wellington City running along the side of SH2, has been assessed by engineers and found that it could be vulnerable to liquefaction or lateral movement during a major earthquake. 

These improvements will replace pipes connections to build resilience in such a way as to allow the pipes to remain intact and working as intended during and after an earthquake.

All Updates

15/10/25

All the work has now been successfully completed and the contractor has de-mobilised from site. 

24/09/25

The second and last coupler being installed at Rocky Point has been successfully completed. The crews will remain onsite backfilling and reinstating the site which is expected to take about two weeks.
Work to relocate the safety barriers back to their original location will take place overnight on 1 and 2 October. 

11/09/25

The work to install the first seismic resilient coupler went as planned and we are on schedule to install the second coupler on Wednesday (17/09/20).

 

03/09/25

The first milestone will be achieved by the end of this week with a 22-hour water shutdown to enable the crew to install the first seismic coupler on the east side of the valve chamber.

A second shutdown is schedule for 17 September.

Although the pipe needs to be drained to enable the work to take place, the shutdowns will not impact any users as the local storage will be utilised to maintain supply.

26/08/25
We're halfway through the three-month project to install earthquake-resilient pipe connections next to SH2, between the BP truck stop and the Horokiwi turnoff! 
Crews are now busy with excavation so that we can start the installation of the seismic resilient couplers early next month.
To install these new pipe connections, we'll need to drain the pipeline and refill once the work is completed. It'll be a slow process to protect the pipe from any damage risk. There will be no impact to water supply as the local storage will be utilised to maintain supply.
   
08/08/25

The establishing works are progressing well and the site now has the welfare cabins and temporary roads in place.

The safety barriers have been relocated  which have moved the entrance further south to ensure the safety of our crews as they undertake the work.