California Code, Health and Safety Code - HSC § 58009

(a) To enforce its rules and regulations.

(b) To enjoin and abate nuisances related to matters within its jurisdiction which are dangerous to health.

(c) To compel the performance of any act specifically enjoined upon any person, officer, or board, by any law of this state relating to matters within its jurisdiction.

(d) On matters within its jurisdiction, to protect and preserve the public health.

The department may defend all actions and proceedings involving its powers and duties. In all actions and proceedings, the department shall sue and be sued under the name of the Department of Toxic Substances Control.