CETESB – Companhia Ambiental do Estado de São Paulo is the state government agency responsible for controlling, inspecting, monitoring, and licensing pollution-generating activities, with the fundamental concern of preserving and recovering the quality of the water, air, and soil.

Created on July 24, 1968, by
Decree No. 50,079
CETESB, initially called the Basic Sanitation Technological Center, incorporated the Environmental Sanitation Superintendence – SUSAM, linked to the Health Secretariat, which, in turn, had absorbed the Intermunicipal Commission for the Control of Water and Air Pollution – CICPAA which, since August 1960, had operated in the cities of Santo André, São Bernardo do Campo, São Caetano do Sul, and Mauá, in the ABC region of Greater São Paulo.

On 08.07.2009, Law 13.542/2009 came into effect.
Law 13.542 of 08.05.2009
which created the New CETESB.

A reference center

Built on these bases, CETESB became one of the 16 reference centers of the United Nations Organization – UNO for environmental issues, acting in close collaboration with the 184 countries that make up this international organization. It has also become one of the five global institutions of the World Health Organization (WHO) for water supply and sanitation issues, and a reference and advisory body for the United Nations Development Programme (UNDP) for hazardous waste issues in Latin America.