California Department of Toxic Substances Control

The California Department of Toxic Substances Control (or DTSC) is an agency of the government of the state of California. The Mission of the California Department of Toxic Substances Control is to provide the highest level of safety, and to protect public health and the environment from toxic harm. DTSC is part of the California Environmental Protection Agency (Cal/EPA), has more than one thousand employees, and it is headquartered in Sacramento. DTSC also has a number of regional offices across the state including two environmental chemistry laboratories, and field offices in Sacramento, Berkeley, Los Angeles, Chatsworth, Cypress, Clovis (Fresno), San Diego and Calexico.

Areas of Responsibility

DTSC regulates the generation, handling, treatment and disposal of hazardous waste in California. DTSC also cleans up thousands of hazardous waste sites in California including disposal sites and industrial sites that resulted in contamination of soil and groundwater.