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3mo ago

Regulators Put Cantareira Under Restriction Oct. 1 After Reservoirs Drop Below 30%

Sabesp faces a lower withdrawal limit of 23 m³/s under contingency rules created after the 2014–2015 crisis.

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Overview

  • ANA and SP Águas reclassified the system to Faixa de Restrição (level 4) effective October 1, the first such move since January 2022.
  • Withdrawals fall from 27 to 23 m³/s, with authorization to transpose up to 10 m³/s from the Jaguari link under a total outflow cap of 33 m³/s.
  • Cantareira’s usable volume sits around 29.3% to 29.42% after months of below‑average rain, while the integrated metropolitan system is near 32.3% to 32.4%, the lowest for this period since 2015.
  • Sabesp extended nightly pressure reductions to 19:00–05:00 and is managing daytime pressure, which can cause overnight outages in higher or more distant neighborhoods.
  • The state suspended new non‑emergency water permits and authorities are conducting daily joint monitoring, with no citywide rationing announced.