(a) The board on request shall assist counties and municipalities by providing a model xeriscape code and other technical assistance.
(b) The board shall work with counties and municipalities to promote, through educational programs and publications, the use of xeriscape practices, including the use of compost, in existing residential and commercial development.

(c) In this section:
(1) “Board” means the Texas Water Development Board.
(2) “Xeriscape” has the meaning assigned by Section 2166.404, Government Code.