NZ Trenchless Industry Update — 14 September 2026

Watercare: Remuera wastewater renewal and relining begins. Watercare has commenced a project between 75 and 101 Clonbern Road to renew part of the wastewater network, including relining an existing pipeline that has reached the end of its useful life. The work is scheduled to continue through to March 2027 and is intended to improve long-term reliability and reduce future maintenance needs. Source: Watercare project update.

Clutha District Council: Milton wastewater and stormwater renewal progresses. Construction resumed on the Union Street/State Highway 1 project in late August, including a new sewer line on Park Road and continuing drainage, stormwater and wastewater works. Council says the drainage component was approaching 90% completion, with remaining works expected to continue on Melville Avenue into October. Source: Clutha District Council.

Kaipara District Council: Maungatūroto wastewater network strengthened. Kaipara has renewed more than 300 metres of ageing wastewater pipe across six sections of the town’s network, which carries approximately 750,000 litres of wastewater a day. Council reports the June–August project was completed on time and under budget, improving reliability for the community’s wastewater assets. Source: Kaipara District Council.

Buller District Council: Karamea Highway drainage-culvert tender. Buller District Council has an open GETS request for proposal for road-drainage culvert installation on Karamea Highway, with the tender closing on 15 September 2026. The procurement is a current local-government drainage infrastructure opportunity; the final method and scope should be confirmed from the tender documentation. Source: GETS.

Watercare: North Auckland water and wastewater asset programme. Watercare has announced a new long-term programme for operations, maintenance, rehabilitation and renewal across water and wastewater assets in North Shore, Waitematā and Rodney. The scope covers approximately 3,500km of watermains and 2,700km of sewerage networks, as well as pump stations, emergency repairs and pipeline rehabilitation. Source: Smart Water Magazine.

Taumata Arowai: consultation on the next wastewater standards tranche. The Water Services Authority is consulting on proposed national standards covering odour discharges and metals in treated wastewater, with submissions open until 22 October 2026. The Authority also notes that technical and drafting amendments to the existing standards took effect on 17 August 2026. Source: Taumata Arowai.

IPWEA: water-asset condition and stewardship in focus. A recent Institute of Public Works Engineering Australasia analysis draws on Taumata Arowai network-performance reporting to highlight ageing assets, deferred maintenance and gaps in condition knowledge across public wastewater networks. The analysis emphasises lifecycle planning, asset data and risk-based renewal decisions as water-service organisations evolve. Source: IPWEA.

No ASOE official-channel product announcement or verified case study published within the last 28 days was identified for this edition. Source: ASOE NZ.