California Code, Health and Safety Code - HSC § 117555

A person who places, deposits, or dumps, or who causes to be placed, deposited, or dumped, or who causes or allows to overflow, sewage, sludge, cesspool or septic tank effluent, accumulation of human excreta, or solid waste, in or upon a street, alley, public highway, or road in common use or upon a public park or other public property other than property designated or set aside for that purpose by the governing board or body having charge of the property, or upon private property without the owner's consent, is guilty of a misdemeanor.

This section does not apply to the placing, depositing, or dumping of solid waste upon private property by the owner, or a person authorized by the owner, of the private property, except that the placing, depositing, or dumping of the solid waste shall not create a public health and safety hazard, nuisance, or a fire hazard, as determined by a local enforcement agency, as defined in Section 40130 of the Public Resources Code, local health department, local fire department or fire district, or the Department of Forestry and Fire Protection.