Puerto Rico began a rotating water-rationing program on Friday, Aug. 9, 2024, limiting water access to 48-hour intervals [5, 6].

The measure comes as a record-breaking drought and aging infrastructure leave large portions of the island facing severe water shortages. The crisis threatens basic sanitation and daily operations for residents in the capital of San Juan and beyond.

Governor Pedro Pierluisi is leading the implementation of the rationing program [1, 2]. The rotating schedule is designed to manage dwindling supplies across the U.S. commonwealth as hot weather continues to deplete reservoirs [1, 3].

Environmental data highlights the severity of the current climate conditions. In San Juan, July rainfall reached only 0.54 inches [1], marking the driest July on record since 1899 [1]. This represents a 120-year low for the region [1].

The drought's impact is widespread across the island's geography. Approximately 25 percent of Puerto Rico is currently classified under severe drought [1], while another 36 percent is experiencing moderate drought [1].

Local officials said the shortage is exacerbated by the island's aging water infrastructure. The combination of physical decay and extreme weather has made it difficult to distribute remaining water efficiently to all sectors of the population [1, 4].

Residents must now coordinate their water usage around the 48-hour rationing windows [3]. The government has not yet specified a date for when the restrictions will be lifted, as they continue to monitor rainfall levels, and reservoir capacities [1, 2].

Puerto Rico began a rotating water-rationing program on Friday, Aug. 9, 2024.

This crisis illustrates the compounding effect of climate change and infrastructure neglect. By hitting a 120-year rainfall low, Puerto Rico is facing a systemic failure where outdated piping and storage cannot withstand modern extreme weather patterns, making the island more vulnerable to future environmental shocks.