California Code, Public Resources Code - PRC § 25401.9

(a) Pursuant to subdivision (c) of Section 25402, to the extent that funds are available, the commission, in consultation with the Department of Water Resources and in consideration of developments in landscape irrigation efficiency occurring on or after January 1, 2010, shall adopt by regulation, performance standards and labeling requirements for landscape irrigation equipment, including, but not limited to, irrigation controllers, moisture sensors, emission devices, and valves.

(b) For the purposes of complying with subdivision (a), the commission shall do both of the following:

(c) No new irrigation equipment for landscape irrigation uses that is manufactured on or after the effective date of the regulations adopted pursuant to subdivision (a) shall be sold or offered for sale in the state unless the irrigation equipment meets the performance standards and labeling requirements established pursuant to this section and is certified by the manufacturer as in compliance with those standards.