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 November, 2024 (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):

NOTICETO THE MARKET

CHANGESIN STATUTORY AUDIT COMMITTE

Companhiade Saneamento Básico do Estado de São Paulo – Sabesp (“Company” or “Sabesp”), pursuant to the provisions of article 33, item XXIX of Resolution No. 80 of Brazilian Securities and Exchange Commission (CVM) of March 29, 2022, hereby informs its shareholders and the market in general that, at a meeting held on November 8, 2024, the Board of Directors was notified of the resignation of Mr. Alexandre Gonçalves Silva as a member of the Company’s Statutory Audit Committee (“CAE”).

In view of this resignation and the amendments to art. 27 of the Company's Bylaws, the Board of Directors approved the appointment of Mr. Eduardo Person Pardini and Mr. Saulo de Tarso Alves de Lara as a CAE member, for a term of office coinciding with that of a member of the Board of Directors.

In addition, the Company informs that the Statutory Audit Committee is now composed of the following members:

Mateus Affonso Bandeira – Coordinator and Financial Expert

Gustavo Rocha Gattass – Member

Eduardo Person Pardini – External member

Saulo de Tarso Alves de Lara – External member

Additional information on the composition of the Board is available at https://ri.sabesp.com.br.

São Paulo, November 14, 2024.

Daniel Szlak

Chief Financial Officer and Investor Relations Officer

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: November 18, 2024

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.