Sabesp Activates Extra Itapanhaú Intake as Cantareira Dips Below 20% Threshold

Overview

• The new Serra do Mar works begin delivering up to 2,500 liters per second from the Itapanhaú basin to the Alto Tietê system to bolster supply.
• Cantareira registered volume útil below 20% on recent days, with the Jaguari–Jacareí reservoir at 16.8%, the lowest since the 2014 crisis.
• The integrated metropolitan system held at 24.6% on December 9 after rain, a brief stabilization following a steady decline.
• ANA and SP Águas say Faixa 5 could be applied in January if levels remain under 20%, setting a 15.5 m³/s withdrawal cap and allowing rationing measures.
• Under Arsesp’s contingency plan the integrated system remains in Faixa 3 with 10 hours of nightly pressure reductions, escalating after seven days below band limits and relaxing after fourteen days above.