California Code, Health and Safety Code - HSC § 116365.03

The state board may adopt as an emergency regulation, a regulation, except a regulation that establishes maximum contaminant levels for primary and secondary drinking water standards, that is not more stringent than, and is not materially different in substance and effect than, the requirements of a regulation promulgated pursuant to the federal Safe Drinking Water Act (42 U.S.C. Sec. 300f et seq.). The adoption of a regulation pursuant to this section is an emergency and shall be considered by the Office of Administrative Law as necessary for the immediate preservation of the public peace, health, safety, and general welfare. Notwithstanding Chapter 3.5 (commencing with Section 11340) of Part 1 of Division 3 of Title 2 of the Government Code, an emergency regulation adopted by the state board pursuant to this section is not subject to review by the Office of Administrative Law and shall remain in effect until revised by the state board.