2005 California Water Code Sections 10620-10621 Article 1. General Provisions

10620.  (a) Every urban water supplier shall prepare and adopt an
urban water management plan in the manner set forth in Article 3
(commencing with Section 10640).
   (b) Every person that becomes an urban water supplier shall adopt
an urban water management plan within one year after it has become an
urban water supplier.
   (c) An urban water supplier indirectly providing water shall not
include planning elements in its water management plan as provided in
Article 2 (commencing with Section 10630) that would be applicable
to urban water suppliers or public agencies directly providing water,
or to their customers, without the consent of those suppliers or
public agencies.
   (d) (1) An urban water supplier may satisfy the requirements of
this part by participation in areawide, regional, watershed, or
basinwide urban water management planning where those plans will
reduce preparation costs and contribute to the achievement of
conservation and efficient water use.
   (2) Each urban water supplier shall coordinate the preparation of
its plan with other appropriate agencies in the area, including other
water suppliers that share a common source, water management
agencies, and relevant public agencies, to the extent practicable.
   (e) The urban water supplier may prepare the plan with its own
staff, by contract, or in cooperation with other governmental
agencies.
   (f) An urban water supplier shall describe in the plan water
management tools and options used by that entity that will maximize
resources and minimize the need to import water from other regions.
10621.  (a) Each urban water supplier shall update its plan at least
once every five years on or before December 31, in years ending in
five and zero.
   (b) Every urban water supplier required to prepare a plan pursuant
to this part shall notify any city or county within which the
supplier provides water supplies that the urban water supplier will
be reviewing the plan and considering amendments or changes to the
plan.  The urban water supplier may consult with, and obtain comments
from, any city or county that receives notice pursuant to this
subdivision.
   (c) The amendments to, or changes in, the plan shall be adopted
and filed in the manner set forth in Article 3 (commencing with
Section 10640).