Cal. Business and Professions Code § 7195.5

(a) For purposes of improving landscape water use and irrigation efficiency, a home inspection report on a dwelling unit prepared pursuant to this chapter on a parcel containing an in-ground landscape irrigation system, the operation of which is under the exclusive control of the owner or occupant of the dwelling, may include an irrigation system inspection report, prepared by either a home inspector or certified landscape irrigation auditor, that contains all of the following: (1) Examination of the irrigation system controller, if present, noting observable defects in installation or operation, or both. (2) Activation of each zone or circuit providing irrigation water to turf grass, noting malfunctions observed in the operation of each of the following: (A) The irrigation valve. (B) Visible irrigation supply piping. (C) Sprinkler heads and stems. (3) During activation of the system pursuant to paragraph (2), observation of any of the following during the period of operation, in minutes, specified in the report: (A) Irrigation spray being directed to hardscape. (B) Irrigation water leaving the irrigated area as surface runoff. (C) Ponding of irrigation water on the surface of the irrigated area. (4) Notation whether inspection is limited due to snow, ice, or other site conditions that impede an inspection. (b) Notwithstanding any other law, a sanction or penalty regarding prohibited hours, days, or effects of operation of a landscape irrigation system shall not be levied upon either the home inspector, the landscape irrigation auditor, the occupant, or the owner of a property by any state or local agency or water purveyor as a consequence of the operation of a landscape irrigation system for the purpose of an irrigation system inspection carried out under this section. (c) A home inspector is encouraged to provide information or access to information regarding water-efficient landscape irrigation systems within the home inspection report. (d) To the extent funds are available, the Department of Water Resources, in consultation with the California Real Estate Inspection Association and the Department of Housing and Community Development, shall compile an estimate of the number of properties for which an irrigation system inspection report has been prepared each year, beginning with 2018, for inclusion in an update to the California Water Plan.