North Lismore Plateau Water Main Installation

Posted 25 February 2016

UEA Trenchless has commenced work on the installation of dual water mains north of Lismore for a new development.

North Lismore Plateau (NLP) is a site approximately three kilometres northwest of Lismore’s CBD which has been identified for future growth. The proposed development site is expected to yield approximately 2,079 dwellings, and a new water main is required in order to service the new development.

A tender was released to trench parallel pipelines, one to be 1,589m of 225mm PVC pipe and the other to be 1,423m of 300mm PVC pipe. UEA provided an alternate proposal of Horizontal Directional Drilling (HDD) 280mm and 355mm PE pipe and this method was accepted by Council.

Once the main is installed by the UEA’s HDD crew, a UEA civil crew will then link up all of the bores and install cross connections and all required fittings. The main is then cleaned and tested in preparation for connections. The process is managed closely with the client’s input to ensure minimal disruption. Once the new main is live, each house will have their service transferred to the new main and the old main will be decommissioned once complete.

By installing the pipe by HDD, UEA was able to work with Council and designers to come up with a new construction plan that will be fully restrained with less mechanical fittings in the ground, which may require future maintenance by council operational crews.

For more details on this project or UEA’s horizontal directional drilling projects, contact the Trenchless team at or call us on 02 9851 3000.

HDD support vehicles in place on Dunoon Rd. with traffic control in place
HDD support vehicles in place on Dunoon Road