NZ Council & Utility Infrastructure Projects
Watercare / Auckland: Watercare's $45 million wastewater pipe renewal programme is extending pipe life by up to 50 years across Auckland through relining rather than dig-up replacement. Work is underway in Waterview, Castor Bay and Ōrākei, with over 2km of pipe investigated in Waterview alone. Pipes dating back to the 1940s are being renewed to reduce overflow risk into Oakley Creek and the Waitematā. Read more: Trenchless Australasia — Source: Trenchless Australasia
Tauranga City Council: Tauranga's wastewater network at Mount Maunganui North is undergoing CCTV inspections following pipe relining completed last year. Cameras are being inserted through existing manholes — requiring no excavation — to confirm the assets remain in good condition and are operating as intended. Read more: Trenchless Australasia — Source: Trenchless Australasia
South Waikato District Council: The new Tīrau watermain is now fully operational, marking a major milestone in replacing the town's ageing water infrastructure. With the watermain connected, the next stage of work involves upgrading the CBD footpaths and removing trees that have caused damage to the pavement. Read more: South Waikato District Council — Source: South Waikato District Council
Kaipara District Council: Kaiwaka's wastewater treatment plant has been upgraded with a Supercritical UV (SCUV) treatment system, tripling the plant's ability to disinfect wastewater during wet weather. The $227,000 upgrade provides a cost-effective alternative to early expansion estimates of over $1 million, ensuring the infrastructure can cope under pressure while protecting the Kaipara Harbour. Read more: Kaipara District Council — Source: Kaipara District Council
Hastings District Council: A major $23 million upgrade is underway at the East Clive Wastewater Treatment Plant to replace ageing equipment and ensure ongoing treatment until 2049. Additionally, stage 3 of the Ōmāhu Road drinking water trunk main upgrade is in active construction, aiming for completion in late August to improve network resilience. Read more: Hastings District Council — Source: Hastings District Council
Trenchless Technology News & Contract Awards in NZ
Kaipara District Council Watermains: A $3.6 million programme of water infrastructure renewals is rolling out for Dargaville and Maungatūroto. The project focuses on upgrading the pipes that deliver drinking water to homes and businesses across the district to ensure long-term supply reliability. Read more: Kaipara District Council — Source: Kaipara District Council
Auckland Infrastructure Growth Charges: Auckland developers will face a 20% increase for water infrastructure growth charges starting 1 July 2026. In the Metropolitan area, this means charges for water and wastewater will increase by approximately $4,900, reflecting the rising costs of funding network expansions. Read more: Property NZ — Source: Property NZ
Regulatory & Policy Updates
Hurunui District Council: The council has formally agreed to enter into a Transfer Agreement with Kaikōura Hurunui Water Services Ltd (KHWS). This agreement marks the next step in transitioning water, wastewater, and stormwater services and associated assets to the new council-controlled organisation, which commenced operations on 1 July 2026. Read more: Hurunui District Council — Source: Hurunui District Council
Northland Waters CCO: District councillors from Far North, Whangārei, and Kaipara have approved key governance and transfer agreements for the Northland Waters establishment programme. This significant milestone moves the region closer to establishing a new council-controlled organisation to deliver drinking water and wastewater services from July 2027. Read more: Kaipara District Council — Source: Kaipara District Council
ASOE Product News & Case Studies
Mullane Trenchless / ASOE (Australia): Mullane Trenchless has marked four years since introducing the ASOE liner system to their operations. With over 30 projects completed across Australia using ASOE materials — including DN1500 rehabilitations in live tidal zones — Mullane continues to back ASOE for pressure work citing suitability for high pressures and large diameters. Read more: Trenchless Australasia — Source: Trenchless Australasia
BulletLiner System / CPM Pipelines (USA): SAK Construction and CPM Pipelines have completed the rehabilitation of 425 metres (1,400 linear feet) of 20-inch force main in Michigan using the BulletLiner System — ASOE's FFRPP (Flexible Fabric Reinforced Plastic Pipe) technology branded for the US market. The trenchless solution minimised disruption on a challenging pressure pipeline project. Read more: BulletLiner System / LinkedIn — Source: BulletLiner System
Australian News
Unitywater / Sunshine Coast: Unitywater completed one of Australia's longest single-shot expandable spiral relines — 200 metres of wastewater pipe in Caloundra serving 17,500 residents. The work was completed live with no service interruption over three days as part of Unitywater's $400 million renewals programme. Read more: Trenchless Australasia — Source: Trenchless Australasia
Sydney Water: Sydney Water has proposed an alternative alignment for a new wastewater transfer pipeline at Camellia-Rosehill that involves significant microtunnelling and relining. The trenchless approach will shorten the pipeline by 2.3 kilometres, reduce the number of temporary construction sites, and minimise disruption to local parks and roads. Read more: Trenchless Australasia — Source: Trenchless Australasia
Coffs Harbour City Council: The council has issued a tender for the rehabilitation of sewer mains by in-situ relining for the 2026-27 period. The scope includes inspection, cleaning, design, manufacture, and installation of sewer liners across the local government area. Read more: Trenchless Australasia — Source: Trenchless Australasia
References
https://www.trenchless-australasia.com/auckland-wastewater-pipe-renewal-to-receive-45m/
https://www.trenchless-australasia.com/tauranga-wastewater-network-to-undergo-inspections/
https://www.facebook.com/SouthWaikatoDistrictCouncil/posts/the-new-t%C4%ABrau-watermain-is-now-fully-operational-marking-a-major-milestone-in-re/1394576656112294/
https://www.kaipara.govt.nz/news/post/1024-Kaiwaka-wastewater-treatment-plant-upgraded
https://www.hastingsdc.govt.nz/our-council/my-hastings/article/3905/essential-infrastructure-project-updates
https://www.kaipara.govt.nz/news/post/1021-Major-watermains-upgrade-starts
https://www.propertynz.co.nz/news/auckland-developers-face-20-increase-for-water-infrastructure-growth-charges
https://www.facebook.com/HurunuiDistrictCouncil/posts/council-ticks-off-next-step-in-transition-of-water-serviceshurunui-district-coun/1341987481441960/
https://www.kaipara.govt.nz/news/post/992-Northland-Waters-incorporated-as-establishment-confirmed
https://www.trenchless-australasia.com/unitywater-delivers-200m-spiral-wastewater-pipe-reline-for-17500-residents/
https://www.trenchless-australasia.com/sydney-water-proposes-massive-tranche-of-trenchless-works-for-major-project/
https://www.trenchless-australasia.com/new-trenchless-tenders-include-major-sewer-relining-project-in-coffs/
Published by ASOE NZ — www.asoe.co.nz