Central Coast Council has awarded the contract for construction of a $61-million pipeline to supply water to the region's fast-growing northern suburbs.
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Joint venture partners Spiecapag and Seymour Whyte have been tasked with building the 9km pipeline.
The council said the pipeline was one of the region's "most significant infrastructure projects" and it would improve water security "for the entire region".
Mayor Lisa Matthews said the Mardi to Warnervale Pipeline project was the next major step to enhancing the Central Coast's water supply network.
"The 9-kilometre pipeline will run from the existing Mardi water treatment plant through to Sparks Road at Warnervale providing water supply to the rapidly expanding northern growth corridor," Cr Matthews said.
"The project will also enhance the water transfer capability between Central Coast Council and Hunter Water, which further improves water security for the two regions and meets our commitment under the Hunter - Central Coast Pipeline Agreement."
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Extensive investigations, design and planning had been completed over two years to ensure the construction was delivered using the best technology available, the council said.
That technology included "innovative trenchless construction techniques" that would ensure sensitive environmental areas were protected.
Council's director of water and sewer Jamie Loader said the pipeline route would pass through rural land holdings, the outer edge of the residential area of Watanobbi, and along the fringes of the environmentally sensitive council-owned lands of Porters Creek Wetland.
"Council has spent a lot of time getting the construction techniques and the pipeline route right, ensuring we consider the impacts on directly impacted residents, the environment and the broader community," Mr Loader said.
"We are looking forward to working collaboratively with the Spiecapag Seymour Whyte joint venture to deliver this essential piece of infrastructure for the Central Coast."
Construction of the pipeline will start in March.
Prior to construction starting, council and the Spiecapag Seymour Whyte joint venture will hold a series of community drop-in sessions.
Locals will be able to view plans and ask questions about the project at these sessions.
Community drop-in session times, dates and locations are yet to be finalised, but will be announced soon, the council said.
Further project information is available at yourvoiceourcoast.com/M2WP.