The power outage will temporarily stop water from being pumped from the water-production facility at the Khlong Kratha reservoir, the announcement explained.
The power outage will see mains water supply from the reservoir shut off from 9am until 4:30pm, the PWA noted.
Also, due to the power outage, the water bill payment office at the Khlong Kratha reservoir will be closed, the notice added.
People are urged to collect any water they may require during the period beforehand.
“We apologise for any inconvenience caused,” the PWA said.
For more information, contact the Phuket PWA on 076-319173, 082-7901634 or 1662.