California Civil Code > Civil Code §1101.8. Local Water Suppliers May Enact Policies or Ordinances
A city, county, or city and county, or a retail water supplier may do either of the following:
(a) Enact local ordinances or establish policies that promote compliance with this article.
(b) Enact local ordinances or establish policies that will result in a greater amount of water savings than those provided for in this article.