Inangahua Combined Three Waters Project
Design and construction upgrade strengthening drinking water and stormwater resilience for Buller District Council.
SERVICES
Design Drainage Trenchless
Location
Inangahua, Buller District
Status
Completed in 2025
Works Description
Delivered under an NZS 3916:2013 design and construct contract, the project involves 835m of new DN63 PE80B drinking water rising and falling mains. Installation combined open-trench and directional drilling methods. Stormwater upgrades included an engineered swale drain and 600mm RCRRJ Class 4 concrete stormwater mains installed beneath State Highway 6.
Watermain Upgrades
835m of PE80B drinking water mains installed via open-trenching and directional drilling.
Live Network Operations
Live tie-ins and commissioning completed while maintaining uninterrupted service to residents.
Highway Stormwater Works
600mm concrete stormwater mains successfully installed under State Highway 6.
