The reduced pressure measures will be in effect nightly from 10pm to 5am between May 11 and May 15, the PWA confirmed in an announcement issued on Thursday (May 7).
The PWA said the measures were necessary because of drought conditions, a prolonged dry spell and extremely hot weather, which have caused raw water supplies feeding the Bang Wad Water Treatment Plant to continuously decrease.
The authority warned that some areas may experience very low water pressure or no running water at all during the affected hours.
Areas in Phuket Town listed as affected include Sri Suchat Village, Pruksa Ville Village, Irrawaddy Bypass Village, Chaofa Garden Home 5 (Wang Thalang), Khao Khad, Laem Panwa, Santisuk Soi, Pracharoomjai Soi, Saokhem Soi, Anamai Laem Chan Rd, as well as the Le Meridien Hotel, Centara Villas and Centara Grand Beach Resort Phuket areas.
In Kathu District, affected areas include Hopeland Village, Bang Thong Soi and the whole of Patong, according to the announcement.
FLOOD WARNING
The warning comes as Phuket authorities on Friday (May 8) also ordered all relevant agencies to prepare for possible floods, storms and landslides forecast to hit the island between May 15-20.
Deputy Phuket Governor Teeraphong Chuaychoo chaired a meeting yesterday (May 8) of the provincial working group responsible for monitoring, preventing and responding to floods, storms and landslides during the 2026 rainy season.
The meeting, held at Phuket Provincial Hall, brought together officials from the Phuket Provincial Disaster Prevention and Mitigation Office (DDPM-Phuket), district offices, local administrative organisations and other agencies.
Officials reviewed weather forecasts, rainfall projections, rainy season preparedness plans and high-risk areas vulnerable to flooding, flash floods and landslides across Phuket. Discussions also covered warning systems, emergency response measures and resource deployment.
Mr Teeraphong said the Meteorological Department had forecast that May would mark the transition into the rainy season, with heavy rainfall expected to intensify during the second half of the month.
He warned that May 15-20 carried an increased risk of flash floods, runoff, overflowing waterways and landslides in some areas.
Phuket Governor Nirat Pongsitthaworn has instructed all relevant agencies to improve drainage efficiency and increase water storage capacity ahead of the expected weather conditions, Mr Teeraphong said.
Authorities have also been told to prepare disaster response machinery for deployment in high-risk areas, particularly residential communities, economic zones and flood-prone roads.
Urgent measures include dredging canals and drainage pipes, removing silt and debris, and clearing weeds, rubbish and other obstructions blocking waterways in order to improve drainage capacity, he explained.
Agencies were also instructed to inspect and maintain emergency equipment and ensure sufficient water pumps and hydraulic pumps are available for flood response operations.
Mr Teeraphong said all agencies must closely monitor weather forecasts and warnings issued by the Meteorological Department, Department of Disaster Prevention and Mitigation, National Water Resources Office, Department of Mineral Resources and Marine Department.
He added that officials must ensure timely public warnings are issued so residents can prepare for possible flooding, storms and landslides.
In addition to immediate disaster prevention efforts, Mr Teeraphong said Phuket must also plan long-term water storage management to secure supplies for future dry seasons.
“Planning must be done two to three years in advance,” he said.
Meanwhile, the PWA urged residents and businesses to conserve water, prepare sufficient water storage containers and inspect plumbing systems for leaks to help minimise water loss during the restriction period.
The authority said updates on the raw water situation would continue to be issued as conditions develop.
Residents seeking more information may contact the PWA Phuket Branch office at 076-319173 or 064-4252310. The PWA apologised for the inconvenience caused.