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___

COMPANHIA DE SANEAMENTO BÁSICO DO ESTADO DE SÃO PAULO – SABESP

PUBLICLY HELD COMPANY

Corporate Taxpayer’s ID (CNPJ): 43.776.517/0001-80

ANNUAL PUBLIC POLICIES AND CORPORATE GOVERNANCE CHARTER

In compliance with article 8, items I and VIII, of Law 13,303, of June 30, 2016, the Board of Directors subscribes to this Charter regarding the Company’s structure and development of Public Policies and Corporate Governance. The content of the Charter can be found in the 2021 Sustainability Report (to which this Charter is appended).

The Annual Public Policies and Corporate Governance Charter represents the alignment of Sabesp with the State-owned Companies Responsibility Law and is an accountability report that demonstrates the Company’s evolution in its commitment to transparency.

Sabesp was created as a mixed capital company under State Law 119/1973, resulting from the merger of several water and sewage service companies, in order to plan, execute and operate public basic sanitation services across the state of São Paulo, with one of its main objectives being the improvement of public health indexes, notably the reduction in infant mortality.

The Brazilian Federal Constitution establishes that it is the common competence of federal, state and municipal governments to promote basic sanitation programs. Additionally, the São Paulo State Constitution establishes that the basic sanitation policies shall create and develop institutional and financial mechanisms to ensure sanitation benefits for the entire population, in addition to foster common solutions among the state and municipalities by means of regional integrated action plans.

In accordance with the current Bylaws, the Company’s main corporate purpose is to provide basic sanitation services aimed at the universalization of said services in the state of São Paulo, without prejudice to long-term financial sustainability.

Currently, Sabesp directly provides environmental sanitation services in 375 municipalities in the state of São Paulo. The Company provides wholesale water and sewage services in other two municipalities and is a minority shareholder of other sanitation and energy companies.

To accomplish the corporate purpose that justified its creation and meet the growing demand for water and sewage services in the state of São Paulo, Sabesp maintains an investment plan containing specific targets to be achieved in the municipalities where it operates. Details of the Company’s investment plan are available on the “Business Strategy” section.

To ensure implementation of its Investment Plan, Sabesp uses its own resources arising from the collection of tariffs for services rendered, while seeking funds from government and private sources, both in Brazil and abroad. To learn more about the Company’s management, and its financial, economic and stock performance, please refer to the “Economic and Financial Management” section.

The state of São Paulo is the controlling shareholder of Sabesp, with 50.3% of its share capital. The remaining shares are traded on the São Paulo stock exchange, in the Novo Mercado segment (34.4% on December 31, 2021), and the New York stock exchange, as Level III American Depositary Receipts (15.3% also on December 31, 2021).

As a result of its control structure, great capital market exposure and adherence to special listing segments, Sabesp adopts high corporate governance standards, which are set out in the “Corporate Governance” section of the 2021 Sustainability Report.

São Paulo, March 24, 2022.

Mario Engler Pinto Júnior - Chairman

Benedito Braga

Claudia Polto da Cunha

Eduardo de Freitas Teixeira

Francisco Luiz Sibut Gomide

Francisco Vidal Luna

Leonardo Augusto de Andrade Barbosa

Luis Eduardo Alves de Assis

Wilson Newton de Mello Neto

Walter Luis Bernardes Albertoni