Companhia de Saneamento Básico do Estado de São Paulo SABESP : MINUTES OF THE 31st MEETING OF THE ELIGIBILITY AND ADVISORY COMMITTEE OF COMPANHIA DE SANEAMENTO BÁSICO DO ESTADO DE SÃO PAULO – SABESP - Form 6-K

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 6-K

REPORT OF FOREIGN ISSUER
PURSUANT TO RULE 13a-16 OR 15d-16 OF THE

SECURITIES EXCHANGE ACT OF 1934

For April, 2023

(Commission File No. 1-31317)

Companhia de Saneamento Básico do Estado de São Paulo - SABESP

(Exact name of registrant as specified in its charter)

Basic Sanitation Company of the State of Sao Paulo - SABESP

(Translation of Registrant's name into English)

Rua Costa Carvalho, 300
São Paulo, S.P., 05429-900
Federative Republic of Brazil

(Address of Registrant's principal executive offices)

Indicate by check mark whether the registrant files or will file
annual reports under cover Form 20-F or Form 40-F.

Form 20-F ___X___ Form 40-F ______

Indicate by check mark if the registrant is submitting the Form 6-K
in paper as permitted by Regulation S-T Rule 101(b)(1)__.

Indicate by check mark if the registrant is submitting the Form 6-K
in paper as permitted by Regulation S-T Rule 101(b)(7)__.

Indicate by check mark whether the registrant by furnishing the
information contained in this Form is also thereby furnishing the
information to the Commission pursuant to Rule 12g3-2(b) under
the Securities Exchange Act of 1934.

Yes ______ No ___X___

If "Yes" is marked, indicated below the file number assigned to the
registrant in connection with Rule 12g3-2(b):

MINUTES OF THE 31^st MEETING OF THE ELIGIBILITY AND ADVISORY COMMITTEE OF COMPANHIA DE SANEAMENTO BÁSICO DO ESTADO DE SÃO PAULO - SABESP

The 31^st meeting of the Eligibility and Advisory Committee of Companhia de Saneamento Básico do Estado de São Paulo - SABESP was held on March 17, 2023, at 11:00 a.m. Agenda: Analysis of the appointees for the Fiscal Council of Companhia de Saneamento Básico do Estado de São Paulo.

The members of SABESP's Eligibility and Advisory Committee, in response to CODEC Official Letter 061 of March 07, 2023, and with regard to the content of the email ([e-mail]), dated March 09, 2023, at 8:33 a.m. (page 2259 of SIMA digital process 015656/2020-91) and based on the statements signed in the Registration Form established by CODEC Resolution 03/2018, as well as the documentation submitted by the appointees to the Company's Fiscal Council, Mr. André Isper Rodrigues Barbabé, as sitting member, for the vacant position, and Mr. Diego Allan Vieira Domingues, as alternate member, to replace Mrs. Izadora Rodrigues Normando Simões, confirm that the nomination process complies with Federal Law 13,303/2016, Federal Law 6,404/1976, State Decree 62,349/2016, the Company's Bylaws, the Company's Nomination Policy, and CODEC Resolution 02/2023. Said proofs of the appointees will be filed at the Company's headquarters. There being no other business to address, the meeting was adjourned for the drawing up of these minutes, which were read, found to be in compliance, and digitally signed by the members.

CARLA ALMEIDA

FÁBIO AURÉLIO AGUILERA MENDES

PAULA CRISTINA NASSSIF ELIAS DE LIMA

1

Appointee: ANDRÉ ISPER RODRIGUES BARBABÉ

Individual Taxpayer's ID (CPF): 409.636.828 - 81

Position: Sitting member of the Fiscal Council of Sabesp

Assessment Script	Verification	Note:
General Data	Are all fields completed and compliant? ( x ) Yes ( ) No
Requirements	Has the appointee declared that he/she complies with all requirements? ( x ) Yes ( ) No
Prohibitions	Has the appointee declared that he/she does not fall into any impediment hypotheses? ( x ) Yes ( ) No
Documents	Has the appointed submitted: Registration Form initialed and signed ( x ) Yes ( ) No CV initialed and signed ( x ) Yes ( ) No Declaration signed as required by CVM ( x ) Yes ( ) No Higher education diploma or proof of membership in a professional association ( X ) Yes ( ) No Diploma proving academic qualification compatible with the position? ( X ) Yes ( ) No Does the documentation certify the minimum required professional experience as indicated by the appointee in item B of the Registration Form? ( X ) Yes ( ) No

After analyzing the Registration Form and the documents presented, this Committee confirms that the nomination of Mr. ANDRÉ ISPER RODRIGUES BARBABÉ complies with Federal Laws 13,303/2016 and 6,404/1976, and State Decree 62,349/2016.

2

Appointee: DIEGO ALLAN VIEIRA DOMINGUES

Individual Taxpayer's ID (CPF): 320.328.238 - 02

Position: Alternate member of the Fiscal Council of Sabesp

Assessment Script	Verification	Note:
General Data	Are all fields completed and compliant? ( x ) Yes ( ) No
Requirements	Has the appointee declared that he/she complies with all requirements? ( x ) Yes ( ) No
Prohibitions	Has the appointee declared that he/she does not fall into any impediment hypotheses? ( x ) Yes ( ) No
Documents	Has the appointed submitted: Registration Form initialed and signed ( x ) Yes ( ) No CV initialed and signed ( x ) Yes ( ) No Declaration signed as required by CVM ( x ) Yes ( ) No Higher education diploma or proof of membership in a professional association ( X ) Yes ( ) No Diploma proving academic qualification compatible with the position? ( X ) Yes ( ) No Does the documentation certify the minimum required professional experience as indicated by the appointee in item B of the Registration Form? ( X ) Yes ( ) No

After analyzing the Registration Form and the documents presented, this Committee confirms that the nomination of Mr. DIEGO ALLAN VIEIRA DOMINGUES complies with Federal Laws 13,303/2016 and 6,404/1976, and State Decree 62,349/2016.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized, in the city São Paulo, Brazil.

Date: April 3, 2023

Companhia de Saneamento Básico do Estado de São Paulo - SABESP
By:	/s/ Catia Cristina Teixeira Pereira
	Name: Catia Cristina Teixeira Pereira Title: Chief Financial Officer and Investor Relations Officer

FORWARD-LOOKING STATEMENTS

This press release may contain forward-looking statements. These statements are statements that are not historical facts, and are based on management's current view and estimates of future economic circumstances, industry conditions, company performance and financial results. The words "anticipates", "believes", "estimates", "expects", "plans" and similar expressions, as they relate to the company, are intended to identify forward-looking statements. Statements regarding the declaration or payment of dividends, the implementation of principal operating and financing strategies and capital expenditure plans, the direction of future operations and the factors or trends affecting financial condition, liquidity or results of operations are examples of forward-looking statements. Such statements reflect the current views of management and are subject to a number of risks and uncertainties. There is no guarantee that the expected events, trends or results will actually occur. The statements are based on many assumptions and factors, including general economic and market conditions, industry conditions, and operating factors. Any changes in such assumptions or factors could cause actual results to differ materially from current expectations.