sr-090809-1lCity Council Meeting: September 8, 2009
Agenda Item: ~ ~~--
To: Mayor and City Council
From: Lee E. Swain, Director of Public Works
Subject: Water Shortage Response Plan Amendment
Recommended Action
Staff recommends that the City Council amend the City's Water Shortage Response
Plan (Attachment A) by Resolution (Attachment B).
Executive Summary
The Water Shortage Response Plan, as adopted by Council June 10, 2009, restricts the
filling or refilling of pools and spas with City supplied water when any stage of water
shortage is implemented. Since filling of pools is already addressed in existing
Municipal Code language, an amendment is proposed to the Water Shortage Response
Plan to remove the section restricting filling of pools and spas.
Discussion
City of Santa Monica Municipal Code 7.16.020 (c)(2) already restricts spa and pool
filling by requiring a cover to be installed and paying a Water Mitigation fee equal to the
estimated first year of water use prior to the issuance of a permit.
On June 10, 2009, the City Council declared a water shortage advisory effective July 1,
2009; thus requesting that each water user reduce water use voluntarily by ten percent.
In adopting the plan and declaring the advisory, restrictions for filling and refilling pools
and spas were implemented. During any stage of declared water shortage, pools and
spas are restricted from filling or refilling using the City's municipal water.
The restriction did not take into account that pools and spas account for less than one
percent of the total water. used in the City and that existing Municipal Code language
1
already addressed pool and spa filling requirements. In addition, during mandatory
water conservation stages as adopted by Council, water customers are given a water
allowance, also known as water budgets. Water budgets allow the water customer to
determine the use of individual water allocations. This prescriptive measure gives the
property owner flexibility. For example, if filling a pool results in water use beyond the
allocation provided in the water budget, penalties in the form of higher unit water
charges will apply to the excess water used.
Accordingly, staff recommends amending the Water Shortage Response Plan by
removing the language in Section 7 which reads:
The following water use restrictions shall apply as a result of implementing any stage of
the WSRP:
Swimming Pools and Spas. No person shall empty and refill aprivately--owned
swimming pool or spa with water from the City's potable water supply, except to prevent
or repair structural damage or to comply with public health regulations. No person shall
fill with water from the City's potable water supply a new swimming pool or spa.
Financial Impacts & Budget Actions
The proposed change in the Water Shortage Response Plan will have no
Budget/Financial impact.
Prepared by: Gil Borboa, Water Resources Manager
Approved:
`~ ~ m~?
Lee E. Swain, Director
Department of Public Works
Forwarded to Council:
Ewell
2
Attachment A -Amended Water Shortage Response Plan
Attachment B -Resolution to amend Section 7 of the Water Shortage Response Plan
Attachment A
City of
Santa Monica
CITY F SANTA ONICA
AT S TA E
P
Department of Public Works
Water Resources Division
1212 5th St.
Santa Monica, CA 90401
(310)458-8975
www.water.smgov.net
Adopted June 10, 2009
Amended September 8, 2009
City of Sttnta Monica \Nater Shortage F2esponse Plan 2009
Table of Contents
Section 1: Introduction
Section 2: City of Santa Monica Water Supply
Section 3: Past, Current and Future Water Demand
Table 1: Current and Planned Water Supplies
Section 4: Objectives and Priorities of Water Use
Section 5: Triggers for Implementation
Section 6: Stages of Water Shortage Supply
Table 2: Water Shortage Reduction Targets
Section 7: Water Use Restrictions for All Stages
Section 8: City of Santa Monica Staff Responsibilities
Section 9: Water Allowances for Stages 1,2,3,4
Table 3: Residential Water Use Allowance
Table 4: Commercial and Landscape Only Water Allowance
Table 5: Landscape Only Water Allowance
Section 10: Water Use Allowance Penalty Surcharge and Fines
Section 11: Challenge or Variance
Section 12: Additional Requirements
Section 13: Definitions
Exhibit 1 -Residential Water Use Allowance Formulas
Table 6: Water Allowances for Each Stage
Table 7: Essential Water Use Gallons Per Capita Day Calculation Stage 1 & 2
Table 8: Essential Water Use Gallons Per Capita Day Calculation Stage 3 & 4
Table 9: Essential Water Use Billing Unit (HCF) Calculations
Table 10: Non-essential Water Use Calculation in HCF Calculations
Table 11: Single Family Water Allowance Chart Example
Table 12: Single Family Bi-monthly Water Use Example
Table 13: Single Family Winter Seasonal Adjustment Example
Table 14: 6-Unit Master Metered Building Water Allowance Chart Example
Table 15: 6-Unit Master Metered Building Bi-monthly Water Use Example
Table 16: 6-Unit Master Metered Building Winter Seasonal Adjustment Example
Exhibit 2 -Commercial and Landscape Only Water Use Allowance Formulas
Table 17: Commercial Water Allowance
Table 18: Commercial Customer Example
Table 19: Landscape Only Water Allowance
Table 20: Landscape Only Customer Example
Exhibit 3 -Calculation Templates
Table 21: Sample Supply Projections
Table 22: Baseline Water Use Data
Table 23: Customer Reduction Goals
Table 24: Baseline Population
Exhibit 4 -Water Shortage Response Team
Table 25: Water Shortage Response Team Sheet
Page 2 of 21
City or' Santa Nlonic2 V+later Shortage Response Plan 2449
Section 1: Introduction
The City of Santa Monica City Council adopts this Water Shortage Response Plan
(WSRP) pursuant to Santa Monica Municipal Code ("SMMC") section 7.16.030(c). The
WSRP is intended as an action plan and is designed to reduce water demand during
water shortages. The WSRP is based in part on the State of California Department of
Water Resources 2007 Urban Drought Guidebook. The Urban Water Management
Planning Act (Section 10632 of the California Water Code) requires water shortage
contingency planning as a component of the Urban Water Management Plan, which is
updated every five years.
The WSRP establishes five stages of water shortage severity based on predicted or
actual water supply reductions. Each stage establishes water use reductions through
voluntary or mandatory measures. Triggers for implementing the WSRP may include
such events as a state or local emergency; natural disaster; a localized event that
critically impacts the water supply; drought or the City's wholesale water agency
imposing water allocation restrictions.
Section 2: Citv of Santa Monica Water Supply
The City of Santa Monica is a retail water agency providing water service to all single-
familyand multi-family residential users, commercial and industrial users and City of
Santa Monica landscape and fire protection uses. The City is also a founding member
agency of the Metropolitan Water District of Southern California (MWD). The City uses
local groundwater, local recycled water and imported water from MWD. As a wholesale
agency, the MWD finances, constructs and operates pipelines and other facilities to
transport state water and Colorado River water to contracted water purveyors such as
the City of Santa Monica.
The City of Santa Monica currently produces 12% of its water supply from groundwater
wells and imports 88% from MWD. Since 1996, groundwater well production has been
affected by contamination by infiltration of the fuel additive MTBE which has forced the
City to increase dependence upon imported MWD water until groundwater remediation
efforts are complete and a new treatment plant is operational. Voluntary water
conservation programs have been used in Santa Monica since 1980.
Page 3 of 21
City of SanRa Monica Water Shortage Response Plan 2Q69
Section 3: Past. Current and Future Water Demand
Ta
ible 1: Current and Planned Water Su lies - A F/Y'
Water Supply 2005 ' 2010 2015 2020 :2025 2030
:Sources
Imported Water 13196 12636 4006 4006 4006 4006
:Provider
Metropolitan Water
6istrict MWD
City of Santa ' 1406 1406 10036 10036 10036 10036
Monica produced
roiandwater:
City of Santa 0 0 0 0 0 0
:Monica surface
tliversions-
"transfers in or out 0 0 0 0 0 0
Exchanges in or out 0 0 0 0 0 0
Recycled Water 336 560 560 560 560 560
,(current antl
projected
reduction
Desalination 0 0 0 0 0 0
Other 0 0 0 0 0 D
Section 4: Objectives and Priorities of Water Use
A. The objectives of the WSRP are to:
(1) Prioritize essential uses of available water;
(2) Avoid irretrievable loss of natural resources;
(3) Manage current water supplies to meet ongoing and future needs;
(4) Maximize local municipal water supplies;
(5) Eliminate water waste city-wide;
(6) Create equitable demand reduction targets; and
(7) Minimize adverse financial effects.
B. The following priorities for use of available water are listed in order from highest to
lowest priority:
(1) Health and Safety including: consumption and sanitation for all water
users; fire suppression; hospitals, emergency care, nursing and other
convalescent homes and other similar health care facilities; shelters and
water treatment;
(2) Institutions, including government facilities and schools such as public
safety facilities, essential government operations, public pools and
recreation areas;
(3) All non-essential commercial and residential water uses;
(4) Landscaped areas of significance, including parks, cemeteries, open
spaces, government-facility landscaped areas and green belt areas;
(5) New water demand.
' City of Santa Monica Urban Water Management Plan 2005
Page 4 of 21
City of Santa iVlonica Water Shortage Rasgonse Plan 200~J
Section 5: Trippers for Implementation
The City Council may declare by resolution that an Advisory or Stage 1, 2, 3 or 4 Water
Supply Shortage exists and that the actions outlined in this WSRP are necessary. The
type of event which may prompt the City Council to declare an Advisory or Stage1, 2, 3,
4 Water Supply Shortage may include, among other factors, drought, state or local
emergency, a natural disaster that critically impacts the water treatment or water
distribution system, a localized event that critically impacts the water supply, water
quality, water treatment or water distribution system, the City's wholesale water agency
requests extraordinary water conservation efforts in order to avoid mandatory water
allocations, the City's wholesale water agency implements a water allocation.
Section 6: Stapes of Water Shortage Supply
The WSRP establishes five stages of severity based on predicted or actual water supply
reductions. Each stage establishes water use reductions either through voluntary or
mandatory measures. Mandatory water restrictions include water use allowance for
each water customer category. Table 2 below outlines the stages and water use
reduction goals.
Table 2: Water Shortage Reduction Targets
Water
Shortage
Stage Water Use
Restrictions Total Water Supply
Reduction
Percentage City-wide Use
Reduction Goal
Adviso Volunta Shorta a is robable 10%
Sta e 1 Mandator 5-10% 15%
Sta e 2 Mandator 10-20% 20%
Sta e 3 Mandator 20-30% 30%
Sta e 4 Mandato 30+% 50%
Section 7: Water Use Restrictions for All Stapes
The following water conservation requirements apply to all persons within the City of
Santa Monica and are permanently enforced in accordance with SMMC section
7.16.020:
(a) Landscape.
(1) Watering Hours. No lawn or landscape area shall be spray irrigated between the
hours of ten a.m. and four p.m. on any day. This subsection shall not apply to any drip
irrigation system approved by the Director of Public Works or unless the Director of
Public Works approves in writing an exemption for irrigation system maintenance, leak
repair or new planting of low water usage plants or if reclaimed water is utilized as
permitted by law.
(2) Irrigation Overspray and Runoff. Water shall not spray or flow to any
impermeable private or public surface including but not limited to walkways, driveways,
sidewalks, alleys, streets, or storm drains.
Page 5 of 21
Gily o~f Santa 4~Aanica Water Shor#age Response Plan 2009
(b) Cleaning. No person shall:
(1) Use water to wash, clean or clear any sidewalks, streets, walkways, patios,
driveways, alleys or parking areas, whether paved or unpaved, with a hose connected
to a domestic water source. Exception: Pressure washing may be permitted in writing by
the Director of Public Works with approved equipment and if all wastewater is recovered
for recycling, disposed of in the sanitary sewer, or directed to landscaping. In no event
shall any water so used be permitted to run off into streets, alleys or storm drains;
(2) Wash or clean with water any vehicle; including, but not limited to any automobile,
truck, van, bus, motorcycle, boat or trailer, whether motorized or unmotorized, except by
use of a hand-held bucket or similar container or a hose equipped with a positive action
quick release shutoff valve or nozzle. This subsection shall not apply to any commercial
car washing facility which utilizes a recycling system to capture or reuse water. In no
event shall any water so used be permitted to run off into streets, alleys or storm drains;
(c) Water Features and Water Recreation Facilities. No person shall:
(1) Fill, for the first time, any water feature such as a fountain, pond, lake or water
display unless the water feature is constructed with a water recycling system and, prior
to the issuance of a building permit, a fee is paid to the Director of Public Works equal
to the first year water consumption of the water feature as determined by the Director of
Public Works.
(2) Fill, for the first time, any water recreation facility such as a hot tub, spa, permanent
swimming or wading pool unless the water recreation facility is constructed, installed or
equipped with a cover to reduce water loss due to evaporation and, prior to the
issuance of a building permit, a fee is paid to the Director of Public Works equal to the
first year water consumption of the water recreation facility, as determined by the
Director of Public Works.
(d) Waste, Ponding and Leaks. No person shall:
(1) Cause, permit or allow water to leak from any exterior or interior pipe, hose or
plumbing fixture of any kind whatsoever.
(2) Cause, permit or allow water to flow from any source on private or public property
into gutters, streets, alleys or storm drains except as a result of rainfall or from a source
approved in writing by the Director of Public Works.
(3) Cause, permit or allow water from any source to pond on private or public
property except as a result of rainfall or unless approved in writirig by the Director of
Public Works.
(4) Cause, permit or allow water to flow from any source on private or public property
without beneficial use.
(e) Eating and Drinking Establishments. All eating and drinking establishments of any
kind whatsoever including, but not limited to, any restaurant, hotel, cafe, cafeteria, bar
or club, whether public or private, shall only provide drinking water to any person upon
receipt of an express request.
(f) Exceptions. The provisions of this Section are not applicable to the uses of water
which are necessary to protect public health and safety or for essential governmental
services, such as police, fire and other similar emergency services:
Page 6 of 21
City of Santa l~Aonica bVater Shortac0e Response Plan 2003
Section 8: City of Santa Monica Staff Resuonsibilities
(A) City staff will be informed of the water supply shortage. Each staff member will
be expected to use water efficiently.
(B) The City's landscaped areas will be efficiently irrigated based on the Irrigation
Association's Best Management Practices.
(C) Each staff member will be expected to notify the appropriate City department
immediately of any leaks seen on City property or private property.
Section 9: Water Allowances for Stages 1,2,3,4
A Water Use Allowance (WUA) is established for each water customer. Examples of
Water Allowances are found in Exhibits 1 and 2.
The WUA shall not apply to:
(A) Any water customer of the City of Santa Monica during an Advisory water
supply shortage stage;
(B) Any hospital, emergency care facility, public safety facility, emergency
shelter, assisted living facility;
(C) Any water customer account designated for municipal non-potable water.
(D) Any single-family or duplex residences where water consumption usage is
at or below twenty-two (22) HCF per bi-monthly bill;
(E) Any multi-family residence where water consumption usage is at or below
eight (8) HCF per dwelling unit per bi-monthly bill;
Summary of Allowances
Residential Water Customers
A water use allowance is a specified amount of water assigned to each residential water
customer in the City of Santa Monica for the duration of a declared water shortage. The
water allowance is calculated using a base amount (essential water use) plus an
additional amount based on the customers past water usage (non-essential water use)
then adjusted for summer and winter seasonal uses.
Commercial and Landscape Only Water Customers
A water use allowance is a percent reduction in the amount of water available for each
commercial and landscape only water customer in the City of Santa Monica for the
duration of a declared water shortage. Commercial water customers are allotted water
on a percentage basis in recognition that water demand is constant and reductions may
cause undue hardship.
Page 7 of 27
City of Santa Monica b'Vater Shortage Response Plan 2009
Residential Water Allowance
Table 3: Residential Water Use Allowance
`Sta e 1 Sta e 2 Sta e 3 `Sta e 4
Allowance
for Single- 68 gallons per capita per day 50 gallons per capita per day
Family +non-essential allowance +non-essential allowance
Pro ert
Allowance
for Multi-
Family
Property 68 gallons per capita per day 50 gallons per capita per day
Master +non-essential allowance +non-essential allowance
Meter
Allowance
for Multi-
Family
Property 68 gallons per capita per day 50 gallons per capita per day
Individual
Unit Meter
Commercial Water Use Allowance
The water use allowance is a percentage of the previous year's average water usage
over a certain period.
Table 4: Commercial Water Allowance
Sta e 1 'Sta e 2 Sta e'3 Sta e 4
Water
Available per g5% 90% 85% 80%
Customer
Landscape Only Water Allowance
The water use allowance is the same as the water shortage reduction targets per Table
2.
Table 5: Landscape Only Water Allowance
Sta e 1 Sta e 2' Sta e 3 Sta e 4
Water
Available per 85% 80% 70% 50%
Customer
Page 8 of 21
City of Santa (~Aonica Water Shortage Response Plan 2009
Section 10: Water Use Allowance Penalty Surcharge and Fines
Every customer of City-supplied water who uses water or permits water to be used in
excess of the amounts established in accordance with this WSRP shall be charged a
fine and penalty surcharge. on their water bill for any water used in excess of the
allowance set by this WSRP during the billing period as follows:
The following fines and penalty surcharges will be assessed for each HCF of EXCESS
water used:
1-4 HCF* _ $4.00
5-10HCF =$16.00
11-16HCF = $32.00
17+ _ $40.00 for each HCF over 17'*
~1 HCF= 748 gallons
**plus other restrictions if applicable
If a water customer has more than three billing periods of excess water consumption
usage, the Director of Public Works or his or her designee may restrict the flow of water
to the customer in addition to charging the customer a fine and penalty surcharge for
excess water usage. In addition, the Director of Public Works or his or her designee
may require the customer at his or her expense to install appropriate water-efficient
devices, appliances, plumbing fixtures, or irrigation equipment as may be required to
bring water consumption within the limits established in the WSRP. If the water
customer continues to fail to comply with the provisions of this WSRP the Director of
Public Works may commence water disconnection procedures.
Section 11: Challenge or Variance
(A) A variance for the use of water in excess of the Water Use Allowance
established by this WSRP may be granted by the Director of Public Works or his or her
designee if it is determined that there exists no feasible means available to comply with
the- limits established by this WSRP and that the excess use of water is:
(1) necessary to prevent an emergency condition relating to health and
safety, and if the person seeking a variance has demonstrated that the maximum
practical reduction in water consumption is being achieved by the affected
property or business and the water customer is in full compliance with the water
conservation requirements of SMMC section 7.16.020; or
(2) caused by facts such as, but not limited to, illness, a necessary
change in use of the affected property, an increase in the size of the household,
changes in vacancy, increases in employment, increases in production output; or
(B) A variance must be requested in writing on forms provided by the City and
include all necessary information. The Director shall issue his or her written decision
within thirty days of a request being filed.
(C) No late fees will be assessed during the variance review process.
(D) No variance shall be granted to a water customer unless the customer has
demonstrated that the maximum practical reduction in water consumption is being
achieved by the affected property or business and the water customer is in full
Page 9 of 21
City of Santa Monica Water Shortage etesgonse Plan 2009
compliance with the water conservation requirements of this WSRP and the Santa
Monica Municipal Code, including SMMC section 7.16.020. At minimum each property
must have installed the following water-efficient fixtures:
(1) All toilets must flush no more than 1.6 gallons per flush;
(2) All showerheads installed must emit no more than 2.5 gallons;
(3) All hand sink faucets must not emit more than 2.5 gallons per
minute. in residential properties and no more than 0.5 gallons per minute in
commercial properties;
(4) All kitchen sink faucets must not emit more than 2.5 gallons per
minute;
(5) All urinals must flush no more than 1.0 gallons per flush.
Any variance granted shall be based upon the water consumption rates of similar
water users, properties or businesses.
Section 12: Additional Requirements
The Director of Public Works, or his or her designee, may implement additional
requirements or make changes to the existing requirements in order to meet water
reduction goals.
Section 13: Definitions
Allowance. The amount of water assigned to water customers based on customer type;
Billing Period. The billing period is approximately 60 days between water meter
readings;
Billing Unit. The measure of water in hundred cubic feet (HCF). One HCF equals
Seven Hundred Forty-Eight gallons (748) of water;
Commercial Account. Any water customer whose property not designated as single
family, multi-family or landscape only. This may include multi-use properties, schools,
businesses;
Essential Water Use. The water needed for consumption and sanitation that meets
basic health and safety needs, such as water needed for drinking, toilet flushing,
showering;
HCF. The billing measurement for water in hundred cubic feet. One HCF
is equal to 748 gallons;
Irrigation. Any system for distribution of pressurized water in the
landscape, including but not limited to any system in which any portion is
installed below grade or affixed to any structure;
Landscaping. Modification of the ground surface with live planting
materials such as trees, shrubs, turf, groundcover or other horticultural
Page 10 of 21
City o~P Santa Monica Wa4~er Shortage Response Plan 2009
materials; as well as non-living materials such as mulch, synthetic turf,
hardscape, or stone;
Landscape Only Account. Any water meter installed to measure the flow of water for
irrigation and landscape purposes only;
Master Meter Account. A meter that serves amulti-family building and may include
water used for common areas such as laundry, irrigation equipment and pools;
Multi-Family. A residential property with three or more units on the premises. This
may include master metered or individually metered units;
Multi-Family Individual Meter Account. A meter that serves only one unit and does
not include outdoor or landscape water use;
New Account. Anew water service connection where one was not previously installed;
Non-essential Water Use. Water used for purposes other than consumption and
sanitation that is not required to maintain health and safety, such as landscape
irrigation; water features;
Person. Any individual, corporation, organization, business, trust, partnership, limited
partnership, association, firm, company, joint stock company, joint venture, commission
or any other legal entity;
Potable Water. Water suitable or intended for human consumption;
Single Family. A residential property with one or two units;
Shortage. The actual demand for water placed upon the water supply system by water
customers which exceeds the actual supply, where the actual supply of water is the
amount of water available for delivery from the municipal water supply system for
subsequent delivery to water customers;
Summer Seasonal Use. Water demand between May 1St through October 31St;
Water: All potable water supplied from the municipal water supply system to any water
customer. Non-potable water is excluded;
Water Customer. The person designated on the water account records maintained by
the City as the person responsible for payment of charges incurred for the use of the
water supply system, or any person who uses water at the premises served;
Water Demand. The amount of water used by water customers;
Winter Seasonal Use. Water demand between November 1St through April 30tH
Page 11 of 21
City of Santa Monica ~Nater Shortage Response Plan 2009
Exhibit 1 -Residential Water Use Allowance Formulas
Summary of Allowances
Residential Water Customers
Single Family and Multi Family Master Meter Accounts
A water use allowance is a specified amount of water assigned to each residential water
customer of the City of Santa Monica for the duration of a declared water shortage. The
water allowance is calculated using a base amount (essential water-use) plus an
additional amount based on the customers past water usage (non-essential water use)
then adjusted for summer and winter seasonal uses.
Multi-Family Individual Meter Accounts
A water use allowance is a specified amount of water assigned to each residential water
customer of the City of Santa Monica for the duration of a declared water shortage. The
water allowance is calculated using a base amount (essential water use).
Residential Water Allowance Formulas2
Single Family and Multi-Family Master Meter Account:
Water Allowance =
essential water +non-essential water + seasonal water adjustment
Multi-Family Individual Meter Account:
Water Allowance =essential water
Assumptions for Calculations:
1. Non-essential Use= average use -essential water use
2. Baseline Year (s) of Water Demand determined at time of shortage
3. Baseline Residential Water Demand determined at time of shortage
4. Residential Population as determined by the City's Planning Department at the
time of shortage
5. Number of Single Family Residents = 4
6. Number of Multi-Family Residents = 1.5
7. Summer Season is defined as June through October
8. Winter Season is defined as November through May
z 2007 Urban Drought Guidebook, State of California, Department of Water Resources.
Page 12 of 21
Gity aP Santa Ulonica U+Iater Sharta~e Response Plan 2~J0.~
Table 6: Water Allowances for Each Sta e
Sta e1&2 !Sta e3&4
Allowance for Single-
Family Property & 68 gallons per capita per day 50 gallons per capita per day
Multi-Family Master +non-essential allowance +non-essential allowance
Meter
Allowance for Multi-
Family Property 68 gallons per capita per day 50 gallons per capita per day
Individual Unit Meter
Table 7: Essential Water Use Gallons Per Capita Dav Calculation Staae 1 & 2
Allocated water use'is 68 allons er ca ita per da cd
Toilets 5 flushes x 1.6 f 8.0
Shower/bath 5 min x 2.5 m 12.5
Clothes Washer 1/3 load 6.0
Kitchen/Dishwasher 4 cd 4.0
Bathroom Sinks 4 cd 4.0
Inside Total cd 34.5
Cleanin /outdoor Use 33.5
TOTAL `' " 68.0 pcd
Table 8: Essential Water Use Gallons Per Capita Dav Calculation Staae 3 & 4
Allocated uirater use is 50 allons er capita er da cd
Toilets 5 flushes x 1.6 f 8.0
Shower/bath 5 min x 2.5 m 12.5
Clothes Washer 1/3 load 6.0
Kitchen/Dishwasher 4 cd 4.0
Bathroom Sinks 4 pcd 4.0
Inside Total cd 34.5
Cleanin /outdoor Use 15.5
TOTAL 50.0` cd
Table 9: Essential Water Use Billing Unit (HCF) Calculations
Stage 1 & 2 Stage 3 & 4
Single Family Water Account 132 HCF/year 98 HCF/year
Multi-Family Master Meter
Water Account 48 HCF/year/unit 37 HCF/year/unit
Table 10: Non-essential Water Use Calculation in HCF Calculations
Sta e 1 throu h 4
Non-essential Use Available water -essential water
Seasonal Adjustment Avg. usage -the minimum allowance x percent
reduction in total non-essential water use
Page 73 of 27
City of Santa IUionica Water- Shortar,.e Response Plan 2000
Calculation for Determining a Water Allowance for an
Individual Residential Water Customer
Residential Water Use Allowance (RWUA) =essential use +non-essential + adjustment
for winter and summer seasons.
1. Total residential customers essential allowance (TW)=
gallons per capita per day) ~ (population of Santa Monica) * (365 days) _
(gallons per year / 325,800 gallons) = xxx AFY*
A. Single Family Water Customer Allowance (assumes four residents):
(68 gpcd) ~ (4 people) _[(272 gpd) ' (365 days)] = 994801 = 132 HCF/year
B. Multi-Family Water Customer Allowance (assumes one and a half
residents):
(68 gpcd) ~ (1.5 people) _[(102 gpd) ~ (365 days)] = r~74801= 50 HCF/year
2. Total Residential Non-essential Water Use Allowance:
Available residential water -essential water use =non-essential water use
Average year use -essential water use =avg. non-essential water use
C Non -essential 1 =percentage total non-essential water use (TNVV)
avg.non -essential J
3. Individual Residential Water Customer Water Allowance:
A. Yearly Allowance= [( avg.. customer use -essential water use) *TNW % ]+
essential water use
B. Percentage Reduction for this household = CThisyear'swaterallowancel
l Averagewateruse J/II
4. Seasonal Adjustment
A. Winter billing period difference = (winter avg. -minimum allotment) x TNW%
B. Summer billing period difference = (summer avg.- minimum allotment) x
TNW%
*latest population number from CSM Planning Department and corresponding water
demand from the Public Works Department will be used to determine the TW
Page 14 of 21
City of Santa 1tAonica Water Shorta0e Response Plan 2009
Residential Water Allowance Examples
Sample Allowance for Residential Water Customers
Assumptions:
Stage 1 - 15% Reduction
Population: 88,000
Average Residential Water Use: 9,300 AF"
Available Residential Water: 7,905 AF (9,300 AF less 15%)
Essential Water Use
68 Gallons Per Capita Per Day (gpcd)
88,000 Population
365 Days in a Year
2,184,160,000 Gallons Per Year
325,800 Number of Gallons in an Acre Foot
6,702 Acre Feet Available for Essential Water Use
(68)(88,000)(365) _ (2,184,160,000/325,800) = 6,702 AF Essential Water Use
2. Non-essential Water Use
7,905 AF Available Residential Water Less
6.702 AF Essential Water Use equals
1,203 AF Non-Essential Water Use
9,300 AF Average Residential Water Use
6.702 AF Essential Use equals
2,598 AF Average Non-Essential Use
1,203 AF Non-Essential Water Use divided by
2,598 AF Average Non-Essential Use equals
46% Percentage Reduction Required per Customer for Non-Essential Water
Use
*AF =Acre Feet, or 325,800 gallons
Page 15 of 21
City u# Santa Nor,ica Nlatsr Shortage Response Plan 2009
Yearly Allowance for a Single Family Home with 4 residents
2004-2006 average yearly water use = 1284 HCF
(This example is anon-conserving single family home)
Table 11: Single Family Water Allowance Chart Example
Sta e 1
Essential 132 Per Table 9
Non-Essential 622 Average Annual Use less
Essential Use at 46%
Reduction
Yearly 754 Sum of Essential Use and Non-
Allowance Essential Use after Reduction
Reduction % 46% Amount required to reduce, or
54% available
Table 12: Single Familv Bi-Monthly Average Water Use Example
Year 2004 2005 2006:- Avera e
Nov-Dec 153 163 166 161
Jan-Feb 188 135 147 157
Mar-A r 155 156 179 163
Ma -Jun 253 253 189 232
Jul-Au 268 262 344 291
Se -Oct 254 292 295 280
Annual Use 1271 1261 1320 1284
Table 13: Single Family Winter Seasonal Adjustment Example
Nov- Jane- Mar- May- Jul- Sep- total=
Dec Feb A r' Jun Au 'Ocf
Essential Use per bill in 22 22 22 22 22 22 132
HCF
Seasonal Adjustment 75 73 77 1.13 145 139 622
(actual use less`22 less
46%
TOTAL PER BILL 97 95 99 135 167 161 754
Page 16 of 21
City of San~Pa Pttonica hUater Shortage Response Plan 2000
Yearly Allowance for aMulti-Family Master Metered Six Unit
Building Assuming 9 Residents
2004-2006 average yearly water use = 340 HCF
Table 14: 6-Unit Master Metered Buildina Water Allowance Chart Examnle
Sta a 1
Essential 288 Per Table 9 6 units X 48 HCF
Non-Essential 28 Average Annual Use less
Essential Use at 46%
Reduction
Yearly 316 Sum of Essential Use and Non-
Allowance Essential Use after Reduction
Reduction % 46% Amount required to reduce, or
54% available
Table 15: 6-unit Master Metered Buildina Bi-Monthly Average Water lJse Examnle
Year 2004 +' 2005 2006 Avera' e
Nov-Dec 66 58 48 57
Jan-Feb 53 83 56 64
Mar-A r 55 55 36 49
Ma -Jun 55 59 57 57
Jul-Au 65 88 42 58
Se -Oct 58 54 52 55
Annual Use 340
Table 16: Sample 6-unit Master Metered Building Bi-monthly Winter Seasonal
Adiustment Example
Nov-' Jan- Mar- May- ,Jul- Sep- total
Dec Feb A r Jun i Au Oct
Essential Use per bill in 48 48 48 48 48 48 288
HCF
Seasonal Adjustment 5 8 0 5 6 4 28
(actual use less 48 less
46%
TOTAL PER BILL 53 56 48 53 54 52 316
Page 17 of 21
Ciiy of Santa PAonica Water Shortage Response Plan 2pp9
Exhibit 2 -Commercial and Landscape Only Water Use
Allowance Formulas
Commercial and Landscape Only Water Customers
A water use allowance is a percent reduction in the amount of water available for each
commercial water customer of the City of Santa Monica for the duration of a declared
water shortage.
Commercial Water Allowance Formula
The water use allowance is a percentage of the previous year's average water usage
per billing period per the table below.
Table 17: Commercial Water Allowance Formula
Sta e 1 Sta e 2 Sta e 3 Sta e 4
Water
Available per 95% 90% 85% 80%
Customer
Commercial Example
Average water use in previous year = 5592 HCF
Table 18: Commercial Water Customer Example
Sta e 1 Sta e 2 Sta e 3 Sta e 4
Water Allowance 5312 HCF 5033 HCF 4253 HCF 4474 HCF
Landscape Only Water Allowance Formula
The water use allowance is a percentage of the previous year's average water usage
per billing period. The percent reduction will be equal to Stages 1 - 4 in per Table 2.
Table 19: Landscape Only Water Allowance
Sta e 1 Sta e 2 Sta e 3 Sta e 4
Water.
Available per 85% 80% 70% 50%
Customer
Landscape Only Example
Average water use in previous year = 250 HCF
Table 20: Landscape Onlv Customer Example
Sta e 1 Stare 2 Sta e 3 `Sta e 4''
Water Allowance 213 HCF 200 HCF 175 HCF 125 HCF
Page 18 of 21
Gil~y of Santa Monica Water Shortage Response Plan 2000
Exhibit 3 -Calculation Templates
The columns in this exhibit are intentionally left blank.
Table 21: Sample Supply Projections
PROJECTED SUPPLY INFORMATION IN ACRE FEE AF)
Source Normal/Avg Previous
Year Current
Year Next Year
Groundwater
Imported MWD
Water
Rec cled Water.
TOTAL '
Shorta e
Avera a Demand
Additional Sup I Needed
New Total
Su I Shorta e
Table 22: Baseline Water Use Data
Year 1 Year i2 Year 3 Year 4 Average
-Use
Total Single
Family
Water Use
AF
Total Multi-
Family
Water Use
AF
Total
Commercial
Water Use
AF
Total
Landscape
Water Use
AF
TOTAL
Page 19 of 21
City o~F Sonia Monica UVafer Shortage Response Plan 2DO~J
Table 23 :Customer Reduction Goals
Water Use
by -Baseline
Water % of
Total Stage,1
15°/a Stage 2
20% Stage 3
30% Stage 4
50%+
Customer
Type Sales
(AF) Sales `Goal
% :Sales
AF) 'Goal
5 Sales'
(AF) '' Goai
% Sales
AF Goal
% ,Sales`
AF) .'
Groundwater
Imported
MWD
SMURRF
`TOTAL
Table 24: Baseline Po ulation
Number of Residents
Source of Data
Page 20 of 21
Cify of Sanfa tvlonica ~.nlater Si~ortage Response Plar~ 2009
Exhibit 4 -Water Shortage Response Team
Table 25: Water Shortage Response Team Sheet
Title First
Name Last
Name ! Primary
Phone
Phone Emergency
Number
Fax
Email.
Team Leader
Water Resources
Mana er
Water Treatment
WaterNVastewater
Operations
Finance
Conservation
En ineerin
Customer Service
Public Relations
Mana er
Law Enforcement
Fire
Community
Maintenance
T ~1 J ~ _~ _a__
~~. ~~~~~'.
... ..
~a~~~ ~cauc~. ~,uviuniates uie vvartr, rnoou¢es cne team as neeaea, ana oversees implementation of the WSRP.
Water Resources Manager: Manages day-to-day operations of the WSRP.
Water Production/Treatment: Ensures water quality standards are met.
Wastewater Operations: Ensures water quality standards are met.
Finance: Balances impacts of water reduction and income.
Conservation: Develops and implements water conservation programs during the shortage.
Engineering: Ensures water supplies are met/infrastructure maintenance/repair/replacement.
Customer Service: Provides pertinent information to water customers.
Public Relations Manager: Provides pertinent information to the media, City Council and City Staff.
Law Enforcement: Protects the public and enforces laws.
Fire: Protects the public
Community Maintenance: Oversees water use at City facilities and landscaping.
Page 21 of 21
Reference Resolution No.
10424 (CCS).