Service returned at 1 p.m. on July 16, ending an outage that began around 10:30 a.m. on July 14.

The Phu Quoc Water Supply and Drainage Branch picked up an unexplained pressure drop across its network on the morning of July 14. Heavy rain had left the An Thoi area under widespread flooding, and crews needed more than 24 hours to find the fault.

They traced it to a 400 mm transmission main inside a utility chamber where a stormwater culvert crosses the pipeline on Provincial Road 975, in Neighborhood 6 of the former An Thoi Ward.

Rain that day had pooled across the area and threatened to flood nearby homes. After residents complained, a contractor working on road construction nearby sent an excavator to cut a drainage channel, and the machine hit the main.

With the chamber underwater, the utility hired divers to reach the damaged section.