Almost a third of households in Aitutaki, Cook Islands, have no water tanks, nine months after Tropical Cyclone struck.
A state of disaster was declared in February when two thirds of homes were damaged by the cyclone.
The survey of all houses on the island, carried out by the Red Cross, shows 30% have no water tanks and half do not have any guttering.
Cook Islands Red Cross secretary-general Niki Rattle says although many homes have been given tanks, a number are not yet working because they do not have spouting to collect rain water.
The Red Cross wants to ensure the homes will be in a better situation than they were before the cyclone hit, she says, and has offered to cover the cost of the guttering.