New Hamnak pipeline opens

Hamnak pipeline being constructed

​Pipeline completion a significant milestone for southern Waitaki communities 

After two years, a major project by Waitaki District Council to install 34 kilometres of pipeline from the Oamaru Water Treatment Plant south to Hampden has been completed. 

The pipeline project is now supplying drinking water which meets the New Zealand Drinking Water Standards to more than 1200 people in communities located south of the Kakanui river to Moeraki. 

The commissioning of the new pipeline, which began supplying water to customers last week, will be officially celebrated on Saturday 15 September at a ceremony with Mayor for Waitaki, Gary Kircher, and project stakeholders in attendance. Mr Kircher said the success of the project was the result of a combination of the engineering expertise and hard work of Council staff and contractors, local knowledge provided by former water supply committee members, and the support and cooperation of multiple stakeholders - including more than 40 landowners. 

“Despite several challenges, including wetter-than-usual ground conditions and the mycoplasma bovis outbreak, staff and contractors have done a fantastic job in completing the project and delivering high quality water to customers on schedule.” 

“Having the support of landowners along the pipeline route has also been critical to the project’s success, and I’d like to thank them again for their understanding and patience over the last two years.” 

The 34 kilometres of pipeline, supplied by Iplex New Zealand, is the longest run of oPVC in the country. It passes under five significant waterways, including the Kakanui and Waianakarua rivers. 

Council’s Assets Group Manager, Neil Jorgensen, said supplying A-grade water from the Oamaru Water Treatment was a highly cost-effective way to improve the drinking supply for customers and to meet the Drinking Water Standards, which became law in 2007. 

“Not only does the community now receive high quality water, their supply will no longer need to be turned off during flood events and or impacted by droughts. The pipeline also allows more capacity for population and economic growth in the area.” 

Mr Jorgensen paid tribute to everyone involved, including Council’s water team, local firm Whitestone Contracting Limited - who won the contract to complete the physical works, Dunedin-based design 

engineers Fluent Solutions, and Central Otago-based company Rationale, who provided project management expertise. 

“The extensive planning and design work they did up front allowed the construction of the pipeline to run smoothly and to schedule.” 

“It’s an achievement everyone involved is looking forward to celebrating on the 15th.” ​​


Page reviewed: 07 Sep 2018 11:29am