Cal. Health and Safety Code § 18871.4

(a) It is unlawful to permit any wastewater, sewage, or waste material from any plumbing fixtures in a park, any park sewage or waste disposal system, or any plumbing fixtures in a manufactured home, mobilehome, recreational vehicle, accessory structure, or permanent building in the park, to be discharged onto or deposited upon the ground. (b) The enforcement agency may order the removal, sanitation, or both, of any wastewater, sewage, or waste material discharged onto or deposited upon the surface of the ground, or may require the removal, sanitation, or both, of the wastewater, sewage, or waste material, in a manner consistent with the requirements of, and in consultation with, the local health department or agency. (c) Pursuant to this section, the registered owner of a mobilehome, manufactured home, or recreational vehicle shall be responsible for complying with an order, or the correction of a citation, issued by the enforcement agency, and the costs of that order, whenever wastewater, sewage, or waste material is discharged onto or deposited upon the surface of the ground as a result of leaks from plumbing fixtures in a manufactured home, mobilehome, or recreational vehicle, or accessory structure, or whenever those leaks come from plumbing on the space or lot that connects the home or recreational vehicle or accessory structure to the park’s sewer, septic, or drain system on the home or vehicle registered owner’s side of the connection, if the discharge or deposit is determined by the enforcement agency to be the fault of the registered owner of the home or recreational vehicle. (d) Except as provided in Section 18930, the department may adopt any rules and regulations that it determines are reasonably necessary for the protection of life and property and to carry out the purposes of this section.