The $6.82 million non-potable and cross-city pipeline project is now past its halfway point.

Eleven kilometres of the pipeline have been laid with work currently underway along Macquarie Street, between Margaret Crescent and Diane Street, as well as in Regand Park.

"The project remains on track to be completed by June 2021 despite the welcome rains causing some minor delays," the council's director infrastructure Julian Geddes told the Daily Liberal.

"Like any large infrastructure project there has been some variations, however these have remained within the expectations of the project."

Mr Geddes confirmed the pipeline would move non-potable groundwater from the city's established recreational bores and newly-established bores to the John Gilbert Water Treatment Plant.

"The intent is to use the recreational bores during times of severe drought, if required," he said.

Four new bores in North Dubbo would be used as needed as part of the reticulation system, the director said.

"The dual pipeline will also have the capacity to move treated effluent from the Dubbo Sewage Treatment Plant to replace the non-potable groundwater used for irrigation, and to Dubbo zoo into the future," Mr Geddes said.

Nineteen companies competed for the pipeline contract with Western Sydney's Jonishan Pty Ltd the winner.

The project is being funded from a $30 million drought emergency grant from the state government.

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