Puerto Rico’s utilities company urged people to not excessively stockpile water because it would worsen the situation, and officials asked that everyone use masks and maintain social distancing if they seek water from one of 23 water trucks set up across the island.

“We’re asking people to please use moderation,” said Doriel Pagán, executive director of Puerto Rico’s Water and Sewer Authority, adding that she could not say how long the rationing measures will last.

The upcoming water rationing measures will affect clients who are connected to the Carraízo reservoir, one of 11 that Puerto Rico’s government operates.

Natalie Jaresko, executive director of a federal control board that oversees Puerto Rico’s finances amid a deep economic crisis, said Monday that up to 60% of water is wasted, lost or stolen.

Puerto Rico last experienced a punishing drought five years ago that affected 2.5 million people and led to severe water rationing measures.