The California Environmental Protection Agency, commonly known as CalEPA, is a state agency responsible for protecting California's environment and public health. Established in 1991, it oversees various environmental programs and regulations, focusing on air quality, water quality, waste management, and toxic substances. CalEPA works to ensure that the state's natural resources are preserved for future generations. CalEPA consists of several departments, including the California Air Resources Board, California Department of Toxic Substances Control, and California State Water Resources Control Board. These departments collaborate to enforce environmental laws, conduct research, and promote sustainable practices across the state.