Auditors’ letter regarding change in auditor
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Grant Thornton Auditores Independentes Ltda.
Av. Eng. Luís Carlos Berrini, 105 - 12o andar Itaim Bibi, São Paulo (SP) Brasil
T +55 11 3886-5100
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Securities and Exchange Commission
Washington, D.C. 20549
Re: Companhia de Saneamento Básico do Estado de São Paulo – SABESP
File No. 15.1.
Dear Sir or Madam:
We have read Item 16F of Form 20-F of Companhia de Saneamento Básico do Estado de São Paulo – SABESP for the year ended December 31, 2023, and agree with the statements concerning our Firm contained therein.
Very truly yours.
/s/ Grant Thornton Auditores Independentes Ltda.
São Paulo, Brazil
May 03rd, 2024
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