California Code, Business and Professions Code - BPC § 7065.06

(a) Before the board revises the examination for a landscaping contractor (C-27), the board shall confer with the Department of Water Resources and the California Landscape Contractors Association to determine whether any updates or revisions to the examination are needed to reflect new and emerging landscape irrigation efficiency practices.

(b) The board shall ensure that the examination includes questions that are specific to water use efficiency and sustainable practices to help ensure that the state's water efficiency needs identified in the California Water Plan, described in Section 10004 of the Water Code, are sufficiently supported.

(c) The board shall ensure that the reference study material for the examination continues to include the most current version of the Model Water Efficient Landscape Ordinance (23 Cal.  Code Regs.  490, et seq.) and shall add other collateral material specific to water use efficiency and sustainability.