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WC Sec 10630-10634 Contents of Plans (URBAN WATER MANAGEMENT PLANS)
10630. It is the intention of the Legislature, in enacting this
part, to permit levels of water management planning commensurate with
the numbers of customers served and the volume of water supplied.
10631. A plan shall be adopted in accordance with this chapter and
shall do all of the following:
(a) Describe the service area of the supplier, including current
and projected population, climate, and other demographic factors
affecting the supplier's water management planning. The projected
population estimates shall be based upon data from the state,
regional, or local service agency population projections within the
service area of the urban water supplier and shall be in five-year
increments to 20 years or as far as data is available.
(b) Identify and quantify, to the extent practicable, the existing
and planned sources of water available to the supplier over the same
five-year increments described in subdivision (a). If groundwater
is identified as an existing or planned source of water available to
the supplier, all of the following information shall be included in
(1) A copy of any groundwater management plan adopted by the urban
water supplier, including plans adopted pursuant to Part 2.75
(commencing with Section 10750), or any other specific authorization
for groundwater management.
(2) A description of any groundwater basin or basins from which
the urban water supplier pumps groundwater. For those basins for
which a court or the board has adjudicated the rights to pump
groundwater, a copy of the order or decree adopted by the court or
the board and a description of the amount of groundwater the urban
water supplier has the legal right to pump under the order or decree.
For basins that have not been adjudicated, information as to
whether the department has identified the basin or basins as
overdrafted or has projected that the basin will become overdrafted
if present management conditions continue, in the most current
official departmental bulletin that characterizes the condition of
the groundwater basin, and a detailed description of the efforts
being undertaken by the urban water supplier to eliminate the
long-term overdraft condition.
(3) A detailed description and analysis of the location, amount,
and sufficiency of groundwater pumped by the urban water supplier for
the past five years. The description and analysis shall be based on
information that is reasonably available, including, but not limited
to, historic use records.
(4) A detailed description and analysis of the amount and location
of groundwater that is projected to be pumped by the urban water
supplier. The description and analysis shall be based on information
that is reasonably available, including, but not limited to,
historic use records.
(c) Describe the reliability of the water supply and vulnerability
to seasonal or climatic shortage, to the extent practicable, and
provide data for each of the following:
(1) An average water year.
(2) A single dry water year.
(3) Multiple dry water years.
For any water source that may not be available at a consistent
level of use, given specific legal, environmental, water quality, or
climatic factors, describe plans to supplement or replace that source
with alternative sources or water demand management measures, to the
(d) Describe the opportunities for exchanges or transfers of water
on a short-term or long-term basis.
(e) (1) Quantify, to the extent records are available, past and
current water use, over the same five-year increments described in
subdivision (a), and projected water use, identifying the uses among
water use sectors including, but not necessarily limited to, all of
the following uses:
(A) Single-family residential.
(E) Institutional and governmental.
(G) Sales to other agencies.
(H) Saline water intrusion barriers, groundwater recharge, or
conjunctive use, or any combination thereof.
(2) The water use projections shall be in the same five-year
increments described in subdivision (a).
(f) Provide a description of the supplier's water demand
management measures. This description shall include all of the
(1) A description of each water demand management measure that is
currently being implemented, or scheduled for implementation,
including the steps necessary to implement any proposed measures,
including, but not limited to, all of the following:
(A) Water survey programs for single-family residential and
multifamily residential customers.
(B) Residential plumbing retrofit.
(C) System water audits, leak detection, and repair.
(D) Metering with commodity rates for all new connections and
retrofit of existing connections.
(E) Large landscape conservation programs and incentives.
(F) High-efficiency washing machine rebate programs.
(G) Public information programs.
(H) School education programs.
(I) Conservation programs for commercial, industrial, and
(J) Wholesale agency programs.
(K) Conservation pricing.
(L) Water conservation coordinator.
(M) Water waste prohibition.
(N) Residential ultra-low-flush toilet replacement programs.
(2) A schedule of implementation for all water demand management
measures proposed or described in the plan.
(3) A description of the methods, if any, that the supplier will
use to evaluate the effectiveness of water demand management measures
implemented or described under the plan.
(4) An estimate, if available, of existing conservation savings on
water use within the supplier's service area, and the effect of the
savings on the supplier's ability to further reduce demand.
(g) An evaluation of each water demand management measure listed
in paragraph (1) of subdivision (f) that is not currently being
implemented or scheduled for implementation. In the course of the
evaluation, first consideration shall be given to water demand
management measures, or combination of measures, that offer lower
incremental costs than expanded or additional water supplies. This
evaluation shall do all of the following:
(1) Take into account economic and noneconomic factors, including
environmental, social, health, customer impact, and technological
(2) Include a cost-benefit analysis, identifying total benefits
and total costs.
(3) Include a description of funding available to implement any
planned water supply project that would provide water at a higher
(4) Include a description of the water supplier's legal authority
to implement the measure and efforts to work with other relevant
agencies to ensure the implementation of the measure and to share the
cost of implementation.
(h) Include a description of all water supply projects and water
supply programs that may be undertaken by the urban water supplier to
meet the total projected water use as established pursuant to
subdivision (a) of Section 10635. The urban water supplier shall
include a detailed description of expected future projects and
programs, other than the demand management programs identified
pursuant to paragraph (1) of subdivision (f), that the urban water
supplier may implement to increase the amount of the water supply
available to the urban water supplier in average, single-dry, and
multiple-dry water years. The description shall identify specific
projects and include a description of the increase in water supply
that is expected to be available from each project. The description
shall include an estimate with regard to the implementation timeline
for each project or program.
(i) Describe the opportunities for development of desalinated
water, including, but not limited to, ocean water, brackish water,
and groundwater, as a long-term supply.
(j) Urban water suppliers that are members of the California Urban
Water Conservation Council and submit annual reports to that council
in accordance with the "Memorandum of Understanding Regarding Urban
Water Conservation in California," dated September 1991, may submit
the annual reports identifying water demand management measures
currently being implemented, or scheduled for implementation, to
satisfy the requirements of subdivisions (f) and (g).
(k) Urban water suppliers that rely upon a wholesale agency for a
source of water, shall provide the wholesale agency with water use
projections from that agency for that source of water in five-year
increments to 20 years or as far as data is available. The wholesale
agency shall provide information to the urban water supplier for
inclusion in the urban water supplier's plan that identifies and
quantifies, to the extent practicable, the existing and planned
sources of water as required by subdivision (b), available from the
wholesale agency to the urban water supplier over the same five-year
increments, and during various water-year types in accordance with
subdivision (c). An urban water supplier may rely upon water supply
information provided by the wholesale agency in fulfilling the plan
informational requirements of subdivisions (b) and (c).
10631.1. (a) The water use projections required by Section 10631
shall include projected water use for single-family and multifamily
residential housing needed for lower income households, as defined in
Section 50079.5 of the Health and Safety Code, as identified in the
housing element of any city, county, or city and county in the
service area of the supplier.
(b) It is the intent of the Legislature that the identification of
projected water use for single-family and multifamily residential
housing for lower income households will assist a supplier in
complying with the requirement under Section 65589.7 of the
Government Code to grant a priority for the provision of service to
housing units affordable to lower income households.
10631.5. The department shall take into consideration whether the
urban water supplier is implementing or scheduled for implementation,
the water demand management activities that the urban water supplier
identified in its urban water management plan, pursuant to Section
10631, in evaluating applications for grants and loans made available
pursuant to Section 79163. The urban water supplier may submit to
the department copies of its annual reports and other relevant
documents to assist the department in determining whether the urban
water supplier is implementing or scheduling the implementation of
water demand management activities.
10632. The plan shall provide an urban water shortage contingency
analysis which includes each of the following elements which are
within the authority of the urban water supplier:
(a) Stages of action to be undertaken by the urban water supplier
in response to water supply shortages, including up to a 50 percent
reduction in water supply, and an outline of specific water supply
conditions which are applicable to each stage.
(b) An estimate of the minimum water supply available during each
of the next three water years based on the driest three-year historic
sequence for the agency's water supply.
(c) Actions to be undertaken by the urban water supplier to
prepare for, and implement during, a catastrophic interruption of
water supplies including, but not limited to, a regional power
outage, an earthquake, or other disaster.
(d) Additional, mandatory prohibitions against specific water use
practices during water shortages, including, but not limited to,
prohibiting the use of potable water for street cleaning.
(e) Consumption reduction methods in the most restrictive stages.
Each urban water supplier may use any type of consumption reduction
methods in its water shortage contingency analysis that would reduce
water use, are appropriate for its area, and have the ability to
achieve a water use reduction consistent with up to a 50 percent
reduction in water supply.
(f) Penalties or charges for excessive use, where applicable.
(g) An analysis of the impacts of each of the actions and
conditions described in subdivisions (a) to (f), inclusive, on the
revenues and expenditures of the urban water supplier, and proposed
measures to overcome those impacts, such as the development of
reserves and rate adjustments.
(h) A draft water shortage contingency resolution or ordinance.
(i) A mechanism for determining actual reductions in water use
pursuant to the urban water shortage contingency analysis.
10633. The plan shall provide, to the extent available, information
on recycled water and its potential for use as a water source in the
service area of the urban water supplier. The preparation of the
plan shall be coordinated with local water, wastewater, groundwater,
and planning agencies that operate within the supplier's service
area, and shall include all of the following:
(a) A description of the wastewater collection and treatment
systems in the supplier's service area, including a quantification of
the amount of wastewater collected and treated and the methods of
(b) A description of the quantity of treated wastewater that meets
recycled water standards, is being discharged, and is otherwise
available for use in a recycled water project.
(c) A description of the recycled water currently being used in
the supplier's service area, including, but not limited to, the type,
place, and quantity of use.
(d) A description and quantification of the potential uses of
recycled water, including, but not limited to, agricultural
irrigation, landscape irrigation, wildlife habitat enhancement,
wetlands, industrial reuse, groundwater recharge, and other
appropriate uses, and a determination with regard to the technical
and economic feasibility of serving those uses.
(e) The projected use of recycled water within the supplier's
service area at the end of 5, 10, 15, and 20 years, and a description
of the actual use of recycled water in comparison to uses previously
projected pursuant to this subdivision.
(f) A description of actions, including financial incentives,
which may be taken to encourage the use of recycled water, and the
projected results of these actions in terms of acre-feet of recycled
water used per year.
(g) A plan for optimizing the use of recycled water in the
supplier's service area, including actions to facilitate the
installation of dual distribution systems, to promote recirculating
uses, to facilitate the increased use of treated wastewater that
meets recycled water standards, and to overcome any obstacles to
achieving that increased use.
10634. The plan shall include information, to the extent
practicable, relating to the quality of existing sources of water
available to the supplier over the same five-year increments as
described in subdivision (a) of Section 10631, and the manner in
which water quality affects water management strategies and supply