Papua New Guinea's capital, Port Moresby, has less than a week's supply of water for consumption and power generation.
The NBC reported this is because the Sirinumu Dam had been shut down by frustrated landowners last week.
The utility companies, PNG Power and Eda Ranu, said power and water services were currently being supplied from downstream catchments which were quickly drying up.
The utilities estimated there were about six days of supply left, unless it rained soon.
The NBC reported PNG Power were planning to meet the works department to address issues raised by the landowners.
The reports said it was not clear what those issues were.