California Code, Welfare and Institutions Code - WIC § 1712.5

(a) The possession or use of tobacco products by wards and inmates in all institutions and camps under the jurisdiction of the Department of the Youth Authority is prohibited. The Director of the Youth Authority shall adopt regulations to implement this prohibition, which shall include an exemption for departmentally approved religious ceremonies.

(b) The use of tobacco products by any person not included in subdivision (a) on the grounds of any institution or facility under the jurisdiction of the Department of the Youth Authority is prohibited, with the exception of residential staff housing where inmates or wards are not present.