Inangahua stormwater and drinking water upgrades
A programme of work to upgrade Inangahua’s stormwater and drinking water infrastructure is expected to start from 20 January 2025.
The upgrade of Inangahua's stormwater and drinking water infrastructure
Drinking water
The drinking water upgrade involves replacing 835 metres of drinking water trunk main from the Water Treatment Plant to the reservoir tanks.
This will renew 635 m of rising main up to the reservoir tanks and 200 m of falling main connecting back down to the township reticulation, replacing the old 50 mm diameter alkathene pipeline with a modern 63 mm diameter polyethylene pipe.
The new polyethylene pipe is made out of a modern and more durable, long-life material with good seismic stability compared to its aged alkathene predecessor. Residents will be notified prior to the new water main being connected.
Stormwater
The planned stormwater upgrades will assist in improving the surface flooding issues currently impacting part of the Inangahua Junction township during heavy rain events.
Two open swale drains will be installed along Lancaster Street to divert stormwater, and the existing open drain system along State Highway 6 (1-180 Upper Buller Gorge Road) will be cleaned and repaired, restoring its original functionality.
The stormwater project will also include the construction of a new underground 600 mm diameter culvert, running underneath the highway and along Inwoods Road. This will carry stormwater from the new Lancaster Street swale drains and allow discharge into the existing gulley, which is adjacent to Inwoods Road, behind the old store. Please see the diagram below for further details.
Inangahua stormwater and drinking water upgrades
Find answers to your questions
Residents will be kept up to date as plans progress. Disruptions during the construction are expected to be minimal, although there will be periods that require single-lane traffic management of State Highway 6 as works progress under the road.
We understand Inangahua residents will have questions about the planned upgrades. You can send these to info@bdc.govt.nz with the subject line ‘Inangahua water upgrades’.
Residents can sign up to Council’s water supply updates and select the Inangahua option.
We encourage residents to connect with Council via these channels and keep themselves informed as the project progresses.
Buller District Council thanks Inangahua residents for their cooperation and patience.
