Cal. Health & Safety Code § 11571

If there is reason to believe that a nuisance, as described in Section 11570, is kept, maintained, or exists in any county, the district attorney or county counsel of the county, or the city attorney of any incorporated city or of any city and county, in the name of the people, may, or any citizen of the state resident in the county, in his or her own name, may, maintain an action to abate and prevent the nuisance and to perpetually enjoin the person conducting or maintaining it, and the owner, lessee, or agent of the building or place in or upon which the nuisance exists from directly or indirectly maintaining or permitting the nuisance.