(1) With respect to the use of a rain barrel, as defined in section 37-96.5-102 (1), C.R.S., to collect precipitation from a residential rooftop pursuant to section 37-96.5-103, C.R.S., the department, to the extent practicable within existing resources, shall develop best practices for:
(a) Nonpotable usage of the collected precipitation; and
(b) Disease and pest vector control.
(2) If the department develops best practices in accordance with subsection (1) of this section, the department shall:
(a) Post the best practices on the department's website; and
(b) Inform the state engineer of the best practices so that the state engineer can either post or link to the department's best practices on the state engineer's website.