Officials say that every property connected to the Ohakune supply should now have tap water again, although there could be some small outages while small leaks are fixed.

The major water outage in the central North Island town began on Sunday morning, and continued until Tuesday evening.

The disruption was caused by damage to the pipeline into the town from last month's Taumarunui earthquake. The break was discovered by a bush walker last week.

Ruapehu Civil Defence controller Vini Dutra said repressurising the system had caused a few leaks, and some might require shutdowns affecting particular parts of the water network as they were fixed.

A precautionary boil water notice remains in place.

"Regular water-quality testing is being carried out, and we are working to lift the notice as soon as it is safe to do so," Dutra said.

"We have also been liaising with schools and businesses about the boil water notice and how they can reopen safely."

He said food businesses needing advice could contact the council's environmental health officer. Eateries and schools in the town were closed from Sunday until Tuesday.

The emergency portaloos scattered throughout the town were being removed, while public toilets were progressively returning to service.

"We encourage people to keep the plastic water containers provided during the outage so they can be used to store emergency water during any future disruption," Dutra said.

Restoration of water was going well, and the council was keeping a close eye on the network.

Dutra thanked those involved in restoring the supply, as well as the community for their patience during the outage.