Infrastructure

Rainfall Eases Extreme Drought Slightly Across Puerto Rico

Published Sep 17, 2026, 10:16 AM ASTvia Primera Hora

At a glance

  • Recent rainfall decreased the area under extreme drought from 39.49% to 37.14% of Puerto Rico’s territory.
  • The Carraízo reservoir’s water level improved to a 'security' level, reducing the likelihood of water rationing.
  • The La Plata reservoir’s level remains low, with operational adjustments in place to manage water supply.

Why this matters: The improved water levels in the Carraízo reservoir reduce the risk of water rationing for 183,000 households in Puerto Rico, alleviating concerns for local communities that rely on this water source.

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Rain from tropical waves last week slightly eased Puerto Rico’s extreme drought, according to a U.S. Drought Monitor report published Thursday. Extreme drought coverage fell from 39.49% to 37.14% of the island’s territory, though more rain is needed in the northeast and the central-to-south coastal strip. The Carraízo reservoir reached a 'safety' level, reducing the risk of a return to rationing like that experienced in August by 183,000 customers served by the reservoir.

The La Plata reservoir remains the only one at a worse level, under operational adjustments. Puerto Rico Aqueduct and Sewer Authority (AAA) President Luis Reinaldo González Delgado said no scheduled service interruptions are currently planned for La Plata customers, noting the utility is closely monitoring reservoir levels, capping daytime La Plata pumping at 70 million gallons, shutting down a pumping unit overnight when consumption drops, and adjusting network pressures to preserve water in key parts of the system.

Meanwhile, lesser drought categories saw minimal change, with severe drought rising from 18.29% to 20.05% as it absorbed the area downgraded from extreme drought.

In context

SourcePrimera Hora

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  1. · 787dailyWater Week in Review: Carraízo Down 3 cm, Oct 25–31
  2. · 787dailyDaily Water Watch: Carraízo at 40.72 m
  3. · 787dailyDaily Water Watch: Carraízo Steady at 40.75 m
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