The laying of new water ringmains around the Cook Islands main island of Rarotonga is now more than 50 per cent complete.
The work is part of the $47US million Te Mato Vai project.
The project manager Russell Abrams says the contractors are making good progress during fine weather, and pressure testing shows that the new pipe is meeting the required standard for watertightness.
He says 35 kilometres of pipe had been laid.
Plans are underway to start stage two of the project which involves upgrading water intakes in the Rarotonga foothills, as well as providing some storage and filtration.
The Cook Islands News reports objections about stage two of the project have been made by several landowner groups.