Companhia de Saneamento Básico do Estado de São Paulo (SABESP) is a Brazil-based company operating in the utilities sector, within the water supply and wastewater services industry. The company provides essential sanitation infrastructure, including water treatment, distribution and sewage management across the State of São Paulo.

SABESP was established to centralize and expand sanitation services, improving system efficiency and supporting urban and industrial development in one of the most populous regions in Brazil.

Its activities include:

• Water supply and distribution systems.
• Wastewater collection and treatment services.
• Operation and maintenance of sanitation infrastructure.
• Engineering and infrastructure development projects.
• Water resource management and loss-reduction programs.

The company operates primarily in the State of São Paulo, serving urban, metropolitan and inland municipalities, with a strong concentration in the São Paulo Metropolitan Region.

Market factors influencing its operations include regulatory frameworks for sanitation, universalization targets, tariff structures, climate variability affecting water resources, infrastructure investment requirements and public policy developments.

Its operating model combines regulated utility services, long-term municipal contracts and continuous investment in system expansion, efficiency and sustainability.

SABESP’s shares are traded on the New York Stock Exchange under the ticker SBS (ADR).

History and Development

SABESP was founded in 1973 by the Government of the State of São Paulo with the objective of integrating and modernizing water and wastewater services across the region.

In its early years, the company focused on consolidating fragmented systems, expanding distribution networks and increasing treatment capacity to support rapid urban growth.

Throughout the following decades, SABESP expanded its operations to additional municipalities, developed large-scale infrastructure projects and invested in monitoring and efficiency technologies.

A key milestone occurred in 2002, when the company completed its initial public offering (IPO) on the New York Stock Exchange, increasing access to capital for modernization and expansion.

In recent years, SABESP has focused on improving operational efficiency, expanding service coverage and adapting to regulatory changes, while investing in sustainability initiatives and advanced water-management technologies.