Water supplies have been restored to 90% of homes after a major outage, despite further outages occurring overnight.
However, some people in the “higher areas” wake up on Sunday morning to a fourth day without water and will have to wait until the afternoon for supplies to be restored.
A burst pipe at a treatment plant in Dolgarrog, Conwy, is believed to have affected some 40,000 homes since Wednesdayclosing some schools and businesses.
Welsh Water said it repaired a series of smaller leaks and explosions overnight as the system was re-pressurized after emptying.
There were reports from residents on social media of a burst pipe at Pentywyn Hill in Deganwy, Llandudno, and also one at Fairways in Llandudno.
A woman in Fairways said she ordered shipping bags around 22:00 GMT on Saturday, saying house floors and garages were at risk of flooding.
Welsh Water said inspectors were on the ground to help manage and mitigate any leaks so supplies could be maintained.
The damaged pipeline at Dolgarrog was repaired on Friday afternoon, but the company warned it could take 48 hours for supplies to return to normal.
talking to BBC Radio Wales Breakfast On Saturday, the company’s chief executive, Peter Perry, said the incident was a “catastrophic failure” caused by ground movement that could not have been foreseen or avoided.
Bottled water stations have been installed at four Conwy stations, which are at Park Eirias in Colwyn, Zip World Conwy, Llandudno West Shore car park and the Bodlondeb site.
Welsh Water said on Sunday that alternative water supplies would continue to be available.
