Puerto Rico, the Caribbean island and United States territory of roughly 3.2 million people, has begun imposing rotating 48-hour water shutoffs affecting more than 180,000 households across major cities including the capital, San Juan. The measure, triggered by severe drought that has steadily depleted the island's reservoirs since around May, is forcing residents to rely on water tankers and storage tanks to meet basic needs while officials scramble to manage a worsening situation.

Governor Jenniffer González-Colón has urged residents to conserve water, asking people to turn off taps while washing hair or doing dishes — small behavioural changes she says could meaningfully reduce consumption. But on the ground, the rollout of the rationing programme has been marked by confusion. Some households scheduled to lose access still had running water, while other communities reported having gone without a reliable supply for well over a year, even before the formal rationing began. Residents and local journalists describe a pervasive sense of frustration at what many see as unclear and inconsistent communication from authorities.

The crisis has thrown a harsh light on Puerto Rico's long-deteriorating water infrastructure. Experts point out that the system loses close to 60 percent of the water that enters it before the water ever reaches customers. One major reservoir currently at the centre of rationing operations extracts roughly 90 million gallons per day on average, but only around 65 million gallons make it into the distribution network — a gap that remains largely unexplained. For many on the island, this inefficiency makes the current emergency feel avoidable, drought notwithstanding.

Looking ahead, the outlook is sobering. Climate and meteorological experts warn that a severe El Niño weather pattern — which suppresses rainfall across the Caribbean — has not yet fully taken hold, meaning dry conditions could persist through the end of 2026. However, experts also point to Puerto Rico's underground aquifer system as an underutilised resource that, if better managed, could provide meaningful relief.

Why this matters: Puerto Rico has faced overlapping crises in recent years — hurricanes, power grid failures, and economic hardship — and this latest emergency underscores how deferred infrastructure investment can turn a natural weather cycle into a full-blown public health risk. With no significant rainfall in the near-term forecast, the coming months will test both the resilience of the island's population and the capacity of its institutions to respond.