HomeMy WebLinkAbout3.3 Zone 7 Urban Water Mgmt Plan CITY OF DUBLIN 1 000- 1D
AGENDA STATEMENT
CITY COUNCIL MEETING DATE: May 12, 1986
SUBJECT Report on Zone 7 of Alameda County Flood Control &
Water Conservation- District Urban Water Management
Plan
EXHIBITS ATTACHED Urban Water Management Plan; Letter from Robert
Buddemeier, Chairman Zone 7 , dated April 10, 1986
RECOMMENDATION V:��Receive presentation
FINANCIAL STATEMENT: None
DESCRIPTION The City , has received a request from Robert
Buddemeier, Chairman, Board of Directors ; Zone 7 of Alameda County Flood
Control & Water Conservation District to make a presentation to the City
Council regarding the District ' s Urban Water Management Plan.
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COPIES TO:
ITEM NO.
r,
6
DRAFT
URBAN WATER MANAGEMENT PLAN - - - -
FOR
ZONE 7 OF ALAMEDA COUNTY FLOOD CONTROL AND
WATER CONSERVATION DISTRICT
NOVEMBER 1985
DRAFT
URBAN WATER MANAGEMENT PLAN
- FOR
ZONE 7 OF ALAMEDA COUNTY FLOOD CONTROL
AND WATER CONSERVATION DISTRICT
BACKGROUND
In the 1983-84 regular session of the California Legislature, AB-797 was
passed and chaptered as part of the California Water Code (Section 10610 et.
3eq,). This bill, commonly known as the Urban Water Management .Planning Act
(UWMPA), requires all urban water purveyors serving more than 3;000 customers
either directly or indirectly, or more than 3,000 acre-feet. of -water- annually,
to prepare and submit a plan not later than becember 31,.,1985.. ThP .pulrpose of..__. _ -:- - .
the Plan is "to evaluate and develop water man_ageznent-po-licies--to;.ac hieve _,-_=-, -- .-_----
conservation and efficient use of urban water supplies_." --.-Zone=7_-_of,_Alameda.- .
County Flood Control and Water Conservation -District,. being the wholesale
water supplier to the Livermore-Amador Valley and serving water to the cities
of Livermore, Pleasanton, and Dublin and to adjoining unincorporated areas,
has prepared the draft Plan in cooperation with the major water retailers in
the Valley.
This draft Plan is a regional urban water management plan encompassing the
entire Livermore Valley. The Zone's four major retailers, California Water
Service Company (CWS), Dublin San Ramon Services District (DSRSD), City of
Livermore, and City of Pleasanton, whose service areas together accounted for
over 97% of the total treated water demand on the Zone 7 water system in 1884,
are included in the Zone's regional plan. CWS has already completed its own
draft urban water management plan for its Livermore district. The text of
CWS' draft plan is herein included as Attachment 1 and is an integral part of
the Zone's draft Plan. Other areas in the Valley not within the service areas
of the four major retailers may also use the Zone's regional urban water
management plan as their own water management plan in part or in its entirety.
In November 1982, the State-Department of Water Resources (DWR) published the
"Recommended Water Management Plan for Alameda .C.gunty Flood .Control_and.Water
Conservation District, Zone 7," in response _to._the Governor.'s -Executive _Order
B 68-80. This DWR recommended plan for Zone. 7-,encompasses.-the -area s._o.f:._urba.n-
water conservation, agricultural water conservation,_-can-Junctive use._of._
surface and ground water, wastewater reclamation,. ,and,-water__exchanges and
transfers. This DWR recommended plan is noted here as an.,impoxtant -reference _
document, and should be considered as supplemental._to^this-Urban :Water ---
Management Plan.
GENERAL INFORMATION
ZONE 7
Name of Utility: Zone 7 of Alameda County Flood Control and Water
Conservation District
Address: 1404 Concannon Boulevard
Livermore, California 94550
Telephone: (415) 443-9300
Population Served: 109,300
Number of Service Connections: 27 (Turnout. metering facilities to
retailing and other large water using
agencies.)
Date of Last Census or Inventory: 1985 . _..._ _ . .. ._ _.
Water Service Area: Cities of Livermore, P.leasanton,.=Dublin,.and :unincorporated._:.;;.
urban areas.
Contact Persons: (1) Harris H. Teshima-,. Chief,,-Water.Systems:Engineering ----- .
(2) James P. Horen, Civil Engineer
RETAILERS
Listed below is general information about the Zone's four major
retailers which are under the Zone's Urban Water Management Plan:
Name of Utility: California Water Service Company
General Office: P.O. Box 1150
San Jose, California 95108
(408) 298-1414
Contact Person: Kenneth J. Roed
Director, Corporate Communications
Livermore 195 South "N" Street
District Office Livermore, California 94550
(415) 447-4900 - . . .
Contact Person: Bill Webster, District Manager.--. . ,.
Population Served: 42,800
Number of Service Connections: 13,133
Date of Last Census or Inventory: January :1;-;,19.85
Name of Utility: Dublin San Ramon Services District - -
Address: 7051 Dublin Boulevard
Dublin, California 94568
Telephone: (415) 828-0515
Population Served: 15,600
Number of Service Connections: 5,157
Date of Last Census or Inventory: June 1984 -
Contact Person: Douglas McMillan, Jr. , Office Manager:
(2)
Name of Utility: City of Livermore
Address: 1052 South Livermore Avenue
Livermore, California 94550
Telephone: (415) 449-4000
Population Served: 9,300
Number of Service Connections: 3,294
Date of Last Census or Inventory: June 21, 1985
Contact Person: Daniel J. Lee, Director of Public Works
Name of Utility: City of Pleasanton
Address: P.O. Box 520
Pleasanton, California 94566
Telephone: (415) 847-8071
Population Served: 41,600
Number of Service Connections: 12,804
Date of Last Census or Inventory: 1985
Contact Person: William L. Wilkins, Field Services Superintendent
WATER USE RECORDS
Historical Water Use
-- Period of available records: 1962-to present.
Note that CWS and the City of Pleasanton and some other smaller
agencies were supplying water in their areas prior to 1962, but that
the year 1962 is when the Zone first began delivering treated water
(to CWS) and thus is used here as the base point for showing
historical water use in the Valley (See Attachment 2) ,
-- Water use records are: Zone 7 CWS -DSRSD--.---Livermore '-Pleasanton
Daily x x - i. x
Monthly x x x - :x x _
Annual x x x x x
-- Source of records: Zone 7 CWS -D SRS-T) ::-.--Iivennore--?-PleasanVon: -.
Water Sales x x x
Source Meter(s) x x x x x
-- Water sources: Zone 7 CWS DSRSD Livermore. Pleasanton - - ---
Groundwater x x x
(Current no. of active wells) 4 12
Surface Water x
Purchased Water x x x x x
(3)
The Zone has four active wells with approximately 8 mgd total
capacity. In addition, it has approximately 8,000 AFA average yield
from its Arroyo del Valle water rights. The main source of supply
is the California State Water Project via the South Bay Aqueduct,
under which the Zone has an ultimate entitlement of 46,000 AFA
effective in 1997 (27,000 AFA in 1985) .
Historical Data
Under water service contracts the Zone supplies treated water to 11
customers, including four major retailers, which are described as follows:
County of Alameda: °
The Zone serves the County's Santa Rita Rehabilitation Center, _- -
(Alameda County prison), located north of Pleasaatpn;:-_Sevice :,,:; ,
first began in August, 1984 and currently services-;:
approximately 2,200 persons including agricultural irrigation
needs. Previously, this area was served with well water from
one of the Camp Parks wellfields.
State of California:
The Zone provides a small service to the Department of Water
Resources' maintenance building facilities north of the Zone's
Patterson Pass Water Treatment Plant. The amount of water
used is almost negligible.
California Water Service Company (CWS):
The Zone's second largest retailer, CWS is a private water
company serving approximately 80% of the municipal water used
in the City of Livermore. Generally, its water service area
covers the central, south and southwest portions of the city.
CWS' water supply consists of approximately 65% purchased from
Zone 7 and 35% from its own well water production..
Dublin San Ramon Services District (DSRSD):------ ______ _., - _ -- -• • -_ .
The Zone's third largest retailer, DSRSD changed.`its...name_fro
m_ ;�
Valley Community Services District in 1978.=,_.This .-�speeial
district serves water to the City of Dublin,_-as-well_-as. --
providing sewer, park, and fire protection serviEes•� DSRS� ,;c�rc __.
previously utilized well water pumping for $
supply until 1979. Since that time, DSRSD has purchased all
of its supply from the Zone.
City of Livermore:
Thee City is the Zone's fourth largest retai�.�r,_serving:-
approximately 20% of the municipal water used -in.--.the City:of .:-
Livermore. In general, the City serves the north and -
northeastern portions of Livermore which are -largely-newer
construction areas. The City purchases all of- its water
supply from the Zone.
(4)
Livermore Area Recreation and Park District (LARPD) :
The Zone furnishes a small service to LARPD serving Veterans
Park south of Livermore near the Veterans Administration
Medical Center.
City of Pleasanton:
The City is the Zone's largest retailer, serving water to
essentially all residents within the city limits as well as a
small group of residents in the Kilkare Canyon area just
southwest of the City. Its water supply consists of
approximately 65% purchased from the Zone and 35% from its own ..
well production.
Pleasanton Housing Authority (PHA) :
PHA is a federally funded housing project located between -the-----_-- __
City of Dublin and the Parks Reserve Forces Training Area. It
has 150 housing units with a relatively minor water usage. It
was formerly known as Komandorski Village.
United States of America: Lawrence Livermore National Laboratory
(LLNL)
The Zone furnished an emergency and standby water service to
LLNL; its primary water supplier is the San Francisco Water
Department via a turnout from the Hetch Hetchy Aqueduct. LLNL
is located approximately 2 miles east of the City of
Livermore. Its water use from the Zone is relatively minor.
United States of America: Parks Reserve Forces Training Area (PRFTA)
The Zone has furnished an emergency service to the PRFTA since
1964, but only until very recently (December 1984) has the
Zone started to serve PRFTA on a continuous basis.
Previously, PRFTA received its water supply from a wellfield
0
located in Pleasanton. In addition to the pRFTA,._-the-Zone,__
supplies all of the Camp Parks area includiag.-_the._Fe.deral
� .
Correctional Institute, Border Patrol, NASAy._ and ,othe_r -Federal_..._.
agencies. _. '. .
United States of America: Veterans Administration Medical- Genter..
VAMC is located about two miles south of the.-City of ----
Livermore. It has been in existence for approximately 50
years and was previously supplied water from wells in
Livermore. In 1963, the Zone started serving_VAMC.to
supplement its groundwater supply. By 1974. _-VAMC..,had ;stopped. _-`--
using its wells and was relying solely on Zone -7 .>for .water .
supply.
See Attachment 2, "Zone 7 Water Operations--Summary .of -Annual Treated Water
Used," for historical water use.
(5)
Current Water Use:
-- Most current year of record: 1984
-- Total treated water use: (in million gallons)
Customer Zone 7 IS* Total
California Water Service Company 1,714 1,011 2,725
Dublin San Ramon Services District 970 0 970
City of Livermore 687 0 687
City of Pleasanton 2,160 1,123 3,283
Others 163 0 163
Totals 5,694 2,134 71828 --_----. _
* IQ = "Independent Quota". The IQ, by contract, is defined as the
maximum quantity of water that a retailer is allowed to produce in
any year for use in its service area from all sources independent of
Zone 7. The source of the IQ amounts shown are pumped groundwater
by the various retailers.
Projected Water Use:
The following are projected water uses by the Zone's customers from the Zone only
(excludes IQ quantities):
Water Use (Million Gallons)
Year CWS(2) DSRSD Livermore Pleasanton 2) Others(l) Zone 7 (Total)
1986 1,790 1,005 847 2,862 346 6,850
1987 1,810 1,025 917 3,148 346 7,246
1988 1,830 1,046 964 3,463 353 7,656
1989 1,850 1,067 1,011 -3;807 331- 8;066
1990 1,870 1,088 1,058 431189 355_ : 8. 560--,
(1) "Others" includes the remaining Zone -T.treated-wate-r_E-ustomers as--described..;_.
earlier.
(2) It is estimated that CWS and Plea santon_will:pump.-their:. iil '_lQ amounts etch,;:.--
ear, 1,000 and 1,141 million gallons, respectively",,-.1
(6)
Water Use Percentages (Current)
(1) (2) (4) (5) Zone 7 (4)
Type CWS (1) DSRSD(1) Livermore Pleasanton(3) Others (Total
Residential 73.4% 61% 95.5 93% 8% 79%
Industrial 0.1 0 0.1 0 0 0
Commercial 9.9 29 2.0 6 0 10
Governmental 11.0 0 0.9 1 92 8
Other 0.1 .10 0.3 0 0 2
Unaccounted 5.5 0 1.2 0 0 1
1. Obtained from retailers. - - -
2. 'These percentages are based on number of connections rather than estimated
water use.
3. From Camp Dresser & McKee's August 1985 Draft_�Iater..Master.__Plan,-for_--the:-pity..
of Pleasanton.
4. Estimated.
5. "Others" includes the remaining Zone 7 treated water customers as described
earlier.
(7)
CURRENT CONSERVATION MEASURES
Zone 7
Water meters: 27 % of system: . 100
Source meters: 4 % of sources: 100
Water use records by user type
(commercial, etc.) : 11 treated water customers-municipal and
institutional
Leak detection program: Yes
Meters installed only on new -
connections in the system: All connections-:, _ -- --
Public education school programs: No
Public information (general) programs: Development and distribution
of a water conservation brochure, and participation
in Bay Area radio and television water conservation
commercials.
Rate structure to encourage conservation: Basically flat rate.
Zone 7 is a wholesale water supplier.
New connection restrictions or conditions: Connection charge
Home retrofit of plumbing fixtures: No
Wastewater reclamation and reuse: Within guidelines of Zone's Waste-
water Management Plan (aims for nondegradation of
groundwater basin.
System pressure control program: Some controls J or .operating:purposes;; :
not specifically for conservation.
Landscape irrigation program: No
Other (please describe) :
(8)
California Water Service Company
For additional information on CWS' current conservation measures refer to its
urban water management plan supplement attached hereto.
Water meters: 13,133 % of system: 100
Source meters: 20 % of sources: 100
Water use records by user type
(commercial, etc.): Yes
Leak detection program: Yes
Meters installed only on new
connections in the system: All.connections
Public education school programs: No
Public information (general) programs: Yes--brochures, bill inserts,
publicity releases, etc.
Rate structure to encourage conservation: Yes
New connection restrictions or conditions: All meters greater than
1-inch are sized by CWS' Engineering Department
for appropriate water use.
Home retrofit of plumbing fixtures: Yes
Wastewater reclamation and reuse: No
System pressure control program: No
Landscape irrigation program: Demonstration garden to be open soon
Other (please describe) : Model rationing plan--and model-government -=--- °--- --.
ordinance available when needed.
(9)
Dublin San Ramon Services District
Water meters: 5,157 % of system: 100
Source meters: 2 % of sources: 100
Water use records by user type
(commercial, etc.):_ Water use categorized by residential, commercial,
and institutional
Leak detection program: Leak detector will be rented next :year.
Meters installed only on new
connections in the system: All connections
Public education school programs: Was initiated;,in-:1983, but ;: __ _ _
discontinued that same year.
Public information (general) programs: No
Rate structure to encourage conservation: No
New connection restrictions or conditions: No
Home retrofit of plumbing fixtures: Study of 50 homes
Wastewater reclamation and reuse: Reclamation study currently
being conducted.
System pressure control program: No
Landscape irrigation program: Considered under reclamation study
Other (please describe) :
(10)
City of Livermore
Water meters: 3,294 % of system: 100
Source meters: 6 % of sources: 100
Water use records by user type
(commercial, etc.): In storage--not readily available
Leak detection program: No
Meters installed only on new
connections in the system: All connections
Public education school programs: :No -
Public information (general) programs: .:No --
Rate structure to encourage conservation: Partial
New connection restrictions or conditions: No
Home retrofit of plumbing fixtures: No
Wastewater reclamation and reuse: Used for golf course and airport
landscaping irrigation
System pressure control program: No
Landscape irrigation program: No
Other (please describe) : --
(11)
City of Pleasanton
Water meters: 123,804 % of system: 100
Source meters: 4 % of sources: 200
Water use records by user type
(commercial, etc.) : Commercial
Leak detection program: Yes
Meters installed only on new
connections in the system: All connections
Public education school programs: No
Public information (general) programs: 'No
Rate structure to encourage conservation: Yes -
New connection restrictions or conditions: Yes
Home retrofit of plumbing fixtures: Yes
Wastewater reclamation and reuse: Under consideration
System pressure control program: Yes
Landscape irrigation program: Yes. Ordinance for commercial develop-
ment requiring automatic sprinkler controllers,
and limiting watering to 10 p.m. - 6 a.m.
Other (please describe) : --'
(12)
ALTERNATIVE CONSERVATION MEASURES
Article 10631(c) of the Urban Water Management Planning Act states
that the utility is to describe conservation measures not currently in use
that will improve the efficiency of water use, and to provide an evaluation of
their costs and their environmental and other significant impacts. Section
10613 defines "efficient use" of water as "those management measures that
result in the most effective use of water so as to prevent its waste or
unreasonable method of use."
Listed below are some alternative measures that may be effective .in
achieving a greater degree of efficiency in water use. These alternatives -
apply specifically to Zone 7 and the Cities -of Livermore and Pleasanton. They-
also may apply to CWS and DSRSD, but these two utilities have their own
specific proposals which are quoted later in.in-_this -.section. -
Leak Detection Program - - -- "_ --
Livermore does not currently have a leak detection program largely
due to the fact that their distribution system is relatively new, and
consequently, line losses are low. It 'is anticipated they will be- instituting
a leak detection program shortly. Costs are expected to be minimal with no
adverse environmental or other impacts. Lost water returns to the groundwater
basin from which 30% of the water used is withdrawn.
Public Education School Programs
Zone 7, Livermore and Pleasanton could become involved in school
programs to educate the young people on the benefits of water conservation.
The direct costs would probably be low since the utilities would receive
substantial assistance from the State's Department of Water Resources Office
of Water Conservation (OWC), and could receive assistance and cooperation from
the various school districts. There should be no adverse impacts. Although
immediate water savings may not be achieved. The benefits realized should be
long-term as the children grow up to be more -conscious- of the benefits of
water conservation than their parents.
General Public Information Programs - - -
The Zone has been an active part of a coalition-of Bay Area water_.
agencies (Bay Area Water Resources Council) :that ;has run advertising zampaigns ; ._�
promoting water conservation for the last several ears:._-. The ,campaign,-, wi th-
an annual cost of 05,000, has consisted of.-& series of._high-quality: =
advertisements on Bay Area radio and televi&iia"- _=Ielephone:�-sur-veys �Laka?n;
after the advertisements indicated that theeneial_�opulace_xatad
favorably. Zone 7's share of the cost this Tast-.:year was -only. 11;500, -whi-ch
is relatively minimal for a program of this quality:
About three years ago, the Zone in conjunction frith-:OWC ,and_CWS, _ -- -
conducted a seminar on water conservation. Addi_r.ionally_,-,a.water conservation
brochure has been developed by the Zone and kas°men-made_avai-lable___to= the _ __-
local libraries, retailers, and others including professional-:-offices
(medical, dental, etc.) for public information,-.__ .-__
(13)
The Zone and other local water utilities could establish additional
general public information programs on the local level. Such programs could
consist of .advertising campaigns in the local radio and print media. A
speakers bureau could also be established. The cost of an expanded general
public information program should be relatively low, but could vary from a few
thousand to tens of thousands of dollars per year. There are no anticipated
adverse impacts. Water savings are expected to be minimal unless a sense of
urgency is imparted, such as if drought or other adverse conditions
demonstrate a necessity for immediate water savings.
Rate Structure to Encourage Conservation
Zone 7 basically has a flat rate for its treated -water-customers.....-.-
Since the Zone does not deal directly with the individual homeowner or _
business, it would not be very effective to,-_change its basic -rate structure. .. --
An increasing block rate schedule for a retailer..--may.have:.some. effect--on._water _
demand, but since water is a relatively inexpensive-.commodityitrt-he-_water. .=:--
savings should be minimal unless the cost to :consumers:increases-
substantially. No negative impacts are anticipated. It would appear that
rate restructuring to encourage conservation should be done at the local
retailing level.
New Connection Restrictions or Conditions
Zone 7 requires that a water connection charge (basic charge .is $830
for 5/8-inch meter) be paid for each new water service in the Valley that
receives Zone 7 water either directly or indirectly: This is accomplished by
the Zone's Water Connection Charge Ordinance which has been in effect since
January 18, 1972. Water connection charge revenues are used to pay for
capital improvements to the Zone 7 water supply system.
Pleasanton has an ordinance that places restrictions on landscaping
for commercial developments. Irrigation is -limited to the hours between 10
p.m. , and 6 a.m. , automatic sprinkler controllers are required, and runoff to
streets is prohibited.
The Zone and/or all the retailers could enact one or <more ordinances
to limit water use in new developments. Ordinance(s) could.:control -meter.-, _ .
sizes or sprinkler operation, or could require._ail .- i-xtures -to--_be ,"low-flow,"::_
or could require any number of other measures .to .limit_water:.use.-- '>-Using the
force of law, the utility can tailor the ordi-Hance to_achieve whatever
percentage reduction in water use is desired-------.Using the-aaw_to 'control water
use would appear to be the most effective._method.-
The major impact from using ordinances for 'thia--ayaterniconsetvatio.n
strategy is social. The utility has the ability:.to-set almost eny degree-of:� . -
conservation desired, and the chances of a water conservation ordinance not .
being approved are rather slight. The social impact could be construed by
many to be just another loss of freedom to-;�r-hoose :aince_the:utility_would be
setting legal constraints on the use of water. >There.:may.-be added_.liability --._
of restrained use when no emergency is evident~=_
(14)
Home Retrofit of Plumbing Fixtures
Retrofitting existing fixtures (plastic bag for toilet tank
displacement, shower flow restrictor, non-toxic dye tablets to check for
toilet tank leaks) can be an effective means of reduci4g water waste. The
problem, however, is getting people to install such devices. Experience has
shown that even if such retrofitting device kits are available at no cost,
very few people will utilize them. Even if mailed out, the mailing costs are
high and there would be no verifiable assurance that the kits would be
installed without costly on-the-spot inspections and possible re-inspections. .
Therefore, it appears that only a voluntary effort by the people would make
this measure workable.
No adverse effects are anticipated other than cost which is estimated
to be in the tens of thousands of dollars for--Valley-wide kit distribution. .
Wastewater Reclamation and Reuse
The Zone has a Wastewater Management Plan (WMP) that encourages
sewage export out of the Valley in order to protect the area's valuable
groundwater basin. However, the WMP allows some reclamation and reuse if
certain conditions are met and if export is not feasible.
The most important consideration, or impact, is environmental. Other
impacts, including cost, are generally favorable. The Zone's major concern
rests with the protection of its central groundwater basin which is an
extremely valuable Valley resource since it provides about 30% of the Valley's
total treated water supply and about 70% of the agricultural irrigation
supply, and also contains many years' worth of storage. There are also other
environmental impacts besides groundwater degradation that must be considered,
such as control of airborne microorganisms and prevention of surface runoff of
effluent into streams and adjoining properties.
Wastewater reclamation and reuse is one water-saving option that must
be carefully considered before any major implementation of such an operation.
System Pressure Control Program
The Zone and all its retailers control pressures
--at-.v ar--ions_.points an -.:
their systems for a variety of operational'xeasons. but not-with water
conservation specifically in mind. This option,--has:not -been :considered.*
because line losses are low and studies have shown':that :_the_ savings=-to>-"be
gained are usually minimal.
By controlling pressures, available fire :E1ows-,wo.uIAJ*e
existing sprinkler systems may not function -as -designed.-- -Furthermore, - -_ -
lowering pressures would generally cause any operation utilizing water to take
longer and consequently may cause some irritation and inconveniences to the
general public. At least at this time, ppe-as.ure control programs other-.--than-
for operational purposes, would not appear-_to:_contxibute -significantly__to -
water conservation.
(15)
Landscape Irrigation Program
Since, on the average, approximately 40% of the total residential
water use is for outside irrigation watering, one of the most effective ways
to reduce water use would be to utilize water—efficient landscaping and use
efficient irrigation methods. An effective program could be established
consisting in part of demonstration landscapes and gardens (such as CWS is
currently doing), ordinances, and a aggressive public information program.
Costs of such a landscape irrigation program are expected to be
moderate but there is a definite potential for significant water savings.
There are no anticipated adverse impacts.
Note that Pleasanton currently has a commercial landscape irrigation
ordinance as mentioned above.
(lb)
California Water Service has completed its own draft plan. Shown
below is their section on alternative conservation measures, verbatim:
"Alternative Conservation Measures (to improve efficiency of water
use
A. Public Education School Program
During the drought period, the Company conducted to a limited
degree, a public education school program on water conservation in.selected
districts. The Company feels such a program should again be pursued within
the schools of Livermore. Plans are now to incorporate such a program into
the Company's overall conservation effort. --,Utilizing ..service provided by. the
Department of Water Resources and low cost educational aids available through
DWR, the program is expected to be a high result/low cost effort with t.otal
support from school administrators and teachers.. No__,specific negative:.impact .:_-
is anticipated through such a program. - -�
B. Rate Structure/Conservation--Many official- positions- on water
conservation advocate rate designs in metered districts which would increase
block rates (large quantity rates) to encourage lower water use. Studies made
and presented before the California Public Utilities Commission by the
California Water Association have demonstrated that water use is not
significantly affected by price or rate structure. This is because water is
too inexpensive a commodity and its benefits too great to be affected by
relatively small increases for greater usage by the average consumer.
However, the Company will pursue a program which seeks the
cooperation of the Public Utilities Commission in developing a conservation
rate design which maintains the financial integrity of the Utility while at
the same time encourages an aggressive effort by all utilities to win customer
support for conservation. Such a rate structure calls for the "leveling" of
the customer's monthly water cost through the year rather than allowing
"extremes" in water bill charges from summer to winter months.. .
A more stable monthly revenue base, providing for recovery of a
utility's fixed cost, would be achieved through a realistic monthly surcharge
on all bills and result in lower bills during _the _summer months and.higher
bills during winter periods. The summer months-=thus. bec-ome _less critical.,as,_:
an income-producing period for water utilities _and -the-.-important.. business-of
managing and conserving the supply can be .=pursued with even.greater_vigor,. _,:- ---
C. Increase Levels of Current Conservation Program-:r_It .:i-s ,y
anticipated that current levels of conservation activities-.pr-vi untlerr aay.
(as in Paragraph II) can be increased to someiegx_ee,.iu._the;_averall�:eforL_ to._
improve efficiency of water use in the Livermore district. -. No- negative-:impact .
is forecast through this effort."
(17)
Dublin San Ramon Services District submitted to the Zone a detailed
section on alternative conservation measures. This section is also shown
below, verbatim:
-D. ALTERNATE CONSERVATION MEASURES
Only that information which directly relates to the costs,
effectiveness and impacts of implementing .alternative conservation measures in
the District is provided as follows. Information considered no different than
might in general apply to most water utilities is not provided. In general,
water conservation measures have not been practiced to date as there has been
no proven need of sufficient magnitude to justify expense.
1. Leak Detection Program
District water rate studies have shown that::unaccountab-le :water.__
purchases have decreased from eleven to one,percent- in..the--;past -five :years. =, -
:7 t-
Therefore, the cost effectiveness of a leak:detection -program would appear to
be extremely high.
2. Public Education School Programs and Information (General)
Programs
A December 1981 water conservation study completed for the
District estimates the first year of a public education program would cost
approximately $137,000 with an expected five percent water savings. The
report states that implementing a public education program in the District
would involve:
1) Revising the water bill format so that bill inserts could be
mailed with the bill.
2) Hiring a water conservation coordinator who would take
charge of the program.
3) Purchasing the materials associated with the school
programs, displays, bill inserts, etc.
4) Establishing a speakers' bureau. - _
S) Advertising in the local media.
No impacts would be expected from these actions.,.._.
3. Rate Structure to Encourage Conservation
Based on a November 1984 water rate study completed for the
District water use charges have been set at a uniform rate regardless of user
or quantity of water used. A uniform rate -was recommended -because of
administrative simplicity and political acceptabllity....:Also_,-,_he._ differences_
between a uniform and non-uniform rate structure--based -on -the:,�Cbst.:off __---
providing service were not of sufficient --significance to justify
implementation of a non-uniform rate structure.
(18)
4. Home Retrofit of Plumbing
The District is currently conducting a water conservation study
involving the plumbing retrofit of approximately 50 homes. This study was
actually initiated not for reasons of conserving supply, but rather to
determine the potential for reduction in wastewater flow. A reduction in
wastewater flow would allow the issue of additional sewer permits with limited
wastewater conveyance and treatment capacity. The results of the study should
be available by the end of 1985.
However, retrofit of plumbing was also studied previously in a
December 1981 water conservation study completed for the District. . The study
showed that the total cost of a plumbing retrofit program would be about
$277,000 per year. This is equivalent to 2-,000 units-.per year at a.-cost of
$140 'per unit. The study estimated that the use of .toilet bags or bottles and
shower flow restrictors would save about 30_:gpd_..per_single__f.amily-.home or.a
total or 534,000 gpd with 17,800 dwelling units. ==- -
The study identifies that the impact of a plumbing .retrofit
program would be lower water bills and thus less revenue to the District.
Water rates would then have to be increased to cover this loss. Also,
conservation efforts will concentrate wastewater which would require
modifications to the District's wastewater treatment plant.
5. Wastewater Reclamation and Reuse
A consultant hired by the District recently completed a draft
report entitled "San Ramon Reclamation Project." In this report, wastewater
disposal is identified as a need in San Ramon Valley, and reclamation and
reuse is shown to be a cost-competitive alternative. Three parks within the
District boundaries are identified as potential irrigation sites using
reclaimed wastewater from the District's wastewater treatment plant.
The study indicates that the potential environmental impacts on
plants and groundwater quality would be insignificant. Public health
protection was identified as a major goal of the reclamation project. The
study states that reclaimed water will meet DRS criteria for use in
close-public-contact irrigation. The capital-.and.._annualcosts of the
recommended project which also includes the .:cost--.;of--streamflow .augmentation..--
and irrigation outside District boundaries are estimated to..bbe _$85,606,000 and
$8,635,000, respectively. _
6. System Pressure Control Program
This does not appear to be a viable alterna'Give _because; as_
previously stated, unaccountable water purchases.-.Or'-indication of.:District,
system leakage already appears low. Also, water conservation studies
generally identify little savings in water consumption of major water-using
appliances in the home. However, pressure reducing devices _are planned for.
some lower elevated homes to be built in the.-Distri:ct':s.,new -zone.-system..
Without these pressure reducing devices some -homes-;would---have--excessively high. : -- . ..
pressures above 100 psi. =
7. Landscape irrigation
See section on wastewater reclamation and reuse."
(19)
Implementation Schedule
For DSRSD's schedule of implementation of alternative conservation
measures, refer to the last section.
For California Water Service Company's schedule, refer to the section
from its own draft plan, verbatim:
"IV. Schedule of Implementation for Proposed Action (as described in
Section III)—Depending upon the cooperation•of_ Livermore school
officials, it is anticipated that an in-school water
conservation education program can begin no later than 1986.
An increase in the level of conservation activity described in.
Section II-A and II-B will begin during 1985 and be .an on-going
effort during following years."
With regard to the other alternative conservation measures listed
the previous section for Zone 7, Livermore and -Pleasanton, -such measures all . .
will be reviewed in 1986 -for possible implementation, except for the following:
Rate Structure to Encourage Conservation
It has not been demonstrated to be effective or appropriate for a
wholesaler such as Zone 7 to implement this measure. Retailers such as CWS,
Pleasanton and Livermore already have rate structures that are designed to
encourage conservation.
System Pressure Control Program
It has been demonstrated that this measure would not save more than
negligible quantities of water, and there are also some negative operational
side effects as described earlier.
Frequency and Magnitude of Supply Deficiencies
There have been no supply deficiencies in the -Livermore-Amad.or Valley,_. _, _.
since the Zone first began serving water in-1962, including=-the -19.76-77. ; - - -- ..
drought. During the second year of the drought,..it became apparentthat.-t-he,:
State Water Project might have problems in-`supplying .the:,f.ull delivery - - -'- -
requests of its water contractors, which included Zone 7. -.Accordi.ngly, ,..Zone 7
along with its retailers, through the news .media, :requested the residents --of :
the Valley to voluntarily conserve water. �.The _res.ponse from -the .residents-vas
a 24 percent reduction in water use from the_previous_:-year.-_,.::$ven if there
been no conservation effort, there still would not -have-.been--a supply , -.
deficiency since the groundwater basin was in itself sufficient .to -supply ,the
full treated water demand. However, it would have been necessary to construct
additional well pumping production facilities under an extremely accelerated
program in order to have the ability to utilize.-the-;groundwater.:basiu.-supply-a;
Because of the Valley'.s relatively extensive -central groundwater
basin, short-term supply deficiencies could be .met.
.(20)
EXPANDED PLAN
Section 10632 of the Urban Water Management Planning Act states that:
"In addition to the elements required pursuant to Section 10631, a
plan projecting a future use which indicates a need for expanded or additional
water supplies shall contain an evaluation of the following:
(a) Wastewater reclamation.
(b) Exchanges or transfer of water on a short-term or long-term
basis.
(c) Management of water system pressures and peak:-demands.
(d) Incentives to alter water use practices;--including-fixture--and==- , �-
appliance retrofit programs.
(e) Public information and educational programs to promote wise use
and eliminate waste.
(f) Changes in pricing, rate structures, and regulations."
Listed below is an evaluation of each of the six alternative water
management practices noted above:
(a) Wastewater reclamation has been used for a number of years by
the City of Livermore for airport and golf course landscaping
purposes. There have been a number of proposals in recent years
by other parties to initiate new reclamation and reuse
programs. Although the reclaimed water could substitute for
potable and irrigation waters, one of the reasons for the
reclamation proposals has been the expense of wastewater export
capacity. It has been (and is) more cost-effective to reclaim
wastewater than to build export facilities to transport it to
the San Francisco Bay.
However, in 1482 the Zone adopted its Wastewater Management Plan(WMP). The WMP strongly encourages export -of-;vast--ewater or-t e primary purpose of protecting the central groundwater basin.-,
The WMP essentially requires any large.new -reclAmation--prajeczs___ -= -
to utilize demineralization in their treatment._:process.._
may be cost-effective when compared to export;--ut _the ::reclaimed:_:;,;.
water will then cost more per unit than would.-*ew--gupp ies -of �- f
potable water.
Also, within the Zone's planning horizon, normal local surface
and ground water supplies, along with average State-Water
meet_.tise.
Project entitlements, are by themselves suffi<p�ent::ao:_,.. - - -- -
Valley's projected demand.
(21)
(b) There is no demonstrated need for the Zone to participate in a
long-range exchange or transfer of treated water because of the
reserve capacity within the groundwater basin. However, the
Zone does have the capability of exchanging water with the
Alameda County Water District (in Fremont) and the Santa Clara
Valley Water District (in San Jose), because all three agencies
are South Bay Aqueduct contractors. For that matter, the Zone
could probably exchange water with any of the other 29 State
Water Project contractors.
The Zone's distribution system is not far away from the East Bay
Municipal Utility District's distribution system in San Ramon, .
and an interconnection could probably be made fairly
expeditiously if needed. DSRSD already has a .connection to
EBMUD's system at Alcosta Boulevard in Dublin.. The ,connection
is valved shut except in emergencies.
(c) A recent study by the consulting engineering-firm.:of.:;Brown and_., .-
Caldwell for the Federal Government showed -that a -30 to -40 -
pounds per -square inch (psi) pressure reduction results in a 3
to 6 percent reduction in water use. This is a negligible
savings for a very large pressure drop. There are few places in
the Valley where a 30 to 40 psi pressure drop could be
implemented and still provide adequate service pressure. Also,
such pressure reductions could jeopardize fire fighting
capabilities and result in general inconvenience in such areas.
(d) Retrofit programs appear to be a very effective means of
reducing water waste. The programs are very cost effective when
water saving devices such as toilet tank bags and shower flow
inserts are actually used. A retrofit program will be studied
in 1986. Ordinances that require low-water using fixtures and
appliances for new developments are also very cost-effective and
are to be encouraged and supported.
(e) Public information and educational programs are cost-effective
and may be expanded by 1986. The importance of instilling wise
water-using habits and a conservation ethic would _be.:emphasized_=
in this program.
(f) Being a a wholesaler, it would not be effec-tive. for the Zone to. =-
utilize an increasing block rate schedule to :encourage water =
conservation. CWS, Pleasanton and Livermore.already.-have _•_ =_, :_
increasing block rate schedules; however, to -achieve any
appreciable degree of water conservation, it:is_anticip .". d.,.that
the unit costs for the higher rate blocks would -have to increase .
substantially. Money is always a very relevant factor, but the
price of water is still relatively very low when compared to the _.
other necessities of life such as food, clothing, -etc.
(22)
For purposes of completeness, CWS' Expanded Plan from their Draft Urban Water
Management Plan is listed verbatim:
"EXPANDED PLAN
Projecting Future Use and Need for
Expanded or Additional Water Supplies
Forecasting a significant increase in population during the next
decade, the Company anticipates the need for developing additional capacity
during this growth period. It is undetermined at this time when the need for
new sources (wells) will occur since wells are usually drilled at the time of
construction of new development. Historically, this has been dependent upon
the economic situation of the area.
I. Waste Water Reclamation--Waste water ..reclamation as an -- -
alternative source of supply is not applicable-_since-the.::Company _has_no. _. =
potential customer for such source in the-.Liv_erm_o re:
_area,_
II. Exchange or Transfer of Water on a Short-term or Long-term Basis
Other retail purveyors of the area draw supplies from the
Company's very same sources including the water agency and the underground
basin. Thus, an exchange or transfer system does not appear practical or
beneficial.
III. Management of Water System Pressures and Peak Demands
The district is divided into 8 pressure zones or areas
consisting of wells, booster pumps, storage tanks and pressure regulating
valves which start on demand not only to provide adequate flow to customers
without creating excessive high pressure but also to meet average and peak
loads.
IV. Incentives to Alter Water Use Practices
As outlined in the Basic Plan, the Company has an on-going,
extensive retrofit program currently in place providing free shower
restrictors, toilet tank bags and leak detection- tablets. The -.Company. .also
supports state programs now in effect dealing_�e_f-.fectively-with-tie-on-going- =-- -
efforts to achieve low water use within .the=-home,:though:-use:.of. --plumbing -. - - -
fixtures and appliances.
(23)
V. Public Information and Educational Programs to Promote Wise Use
and Eliminate Waste
The current programs for public information as outlined in the
Basic Plan have proven successful and well received by customers. We would
hope to expand these efforts as needed and opportunities open. We have
considered for possible future implementation the following programs:
1. Cooperative ventures with various student (Boy/Girl Scouts)
and adults (garden clubs, etc.) groups in winning public
support for conservation.
2. Water conservation contests involving schools .in .developing
conservation slogans and public service spot..announcements = .
for use during summer periods.
3. Special county awards for conservation effo.rt_s. _and ideas.. .:..
4. Cooperative campaign with nurseries to promote low water. use
plants.-
VI. Changes in Pricing, Rate Structure and Regulations
This subject area has been addressed in the Basic Plan as one
which is of primary interest to the Company now and for the future. As
previously stated, the Company will pursue a program which seeks the
cooperation of. the California Public Utilities Commission in developing a
"conservation rate design" which maintains the financial integrity of the
water utility. This basically is one which calls for a "leveling" of water
bills throughout the year through use of surcharges rather than extra charges
for higher usage (generally during the summer) . It is a concept for both
private and public water systems to pursue.
VIZ. Evaluation of Alternative Water Management Practices
The recommended alternative water management practices
identified in the Basic and Expanded Plans have been evaluated separately as
to their environmental, social, health, customer and technological impact_. -It _- _ -_--_
has been determined that the alternative prat-tices. as ,recommended. do .not: --
create any adverse impact as they relate to -the criteria:$t-ated4-..;
VIII. Cost of Aternative Water Management Tractices vs•,Cost :of-
------ ------=-
Expanded or Additional Supplies
Approximately 70 percent of the Company's LA3 rmoze..:supply' is.-_- .
derived from Zone 7. The Company must look at the 'public agency.:.Zone -7,::to ;
maintain and develop sources of supply as the -area's primary wholesaler.
Since the district has responsibilities for developing supplies for other
urban water purveyors of the district, determining costs -of expanded -and
additional supplies based upon total requirements .of-, all:::its::customera;:mus.Z
the responsibility of -the district. This subJec _ #s._addressed_.:in....the -zone.
Management plan which is referenced as part---of--,the Livermore district's -
Expanded Plan.
(24)
The Company's other water source is derived from the underground
in Livermore. Almost always, additional supplies (new wells) are developed to
serve new subdivisions in the periphery of the existing system. Water
conservation accelerated by existing customers within a system would not
necessarily fulfill the demands for additional supplies by the new area since
investor-owned water utilities are required to construct their water mains to
meet fire flow requirements. With this important fact to consider, it is felt
that water conservation can't be considered a viable alternative in meeting
system needs of future well supply expansion in Livermore. This, despite the
fact that the incremental cost (for a new well $150,000 plus pumping costs)
would significantly exceed the cost of present and alternative water
conservation practices to achieve a 5 or 10% reduction in use."
For a more complete understanding of water-conservation,. especially.. ._. _.:
as how it relates to the Livermore-Amador Valley,; there are two--addi:tiocal -
points that have to be considered, as follows: .
(1) Valley residents voluntarily achieved a 24% water conservation
effort in 1977. It is anticipated that this would happen again
should they be apprised of a similar need for such conservation.
(2) Reducing actual water waste is very important from both
practical and philosophical positions, and it is this that needs
to be stressed. Residents of the Valley need to improve their
efficiency of water use, but not be forced into a lower standard
of living unless conditions truly warrant. Note that water
conservation will mean that everyone will be operating a leaner
water use operation, and that a drought or similar shortage will
cause an additional increment of water conservation to be that
much more difficult.
(25)
ATTACHMENT 1
WATER MANGEMENT PLAN
LIVERMORE DISTRICT
CALIFORNIA WATER SERVICE COMPANY
General Office P. 0. Box 1150, San Jose, CA 95108
Contact: Kenneth J. Roed, Director
Corporate Communications 408/298-1414
Livermore
District Office 195 S. "N" Stree-t,- Livermore,- CA 94550
Bill Webster, District Manager
415/433-7096
GENERAL INFORMATION:
California Water Service Company is an investor-owned public water
utility supplying water service through 21 separate systems to .a population of
1 .3 million in 38 California communities. Rates and operations are regulated
by the California Public' Utilities Commission. The Company has been in
continuous operation in California since 1926. The Company has provided water
service to the Livermore community since 1927. At January . 1 , 1985, the
Livermore district had 13,133 customers, representing a - population of
approximately 52,800.
I. Past, Current and Projected Water Use
Monthly water use records have been maintained - by =the. Company for;,: .
its Livermore district since 1950. The se=records.-_,-have-been,-.ased-;upon=water
sales to customers and meter readings at .th'e point of--.wate-r deliveries-,made by
Zone 7 of the Alameda County Water District. . -The :-Company -also evel-ops
approximately 30% of its total supply from 12 wells. =
Water Use--Live re district--1970-1984:
Year
Total Use
1970 6,204 acre-ft/yr
1971 6,352
1972 6,826 "
1973 6,925 "
1974 7,118 "
1975 7,144 "
1976 8,115
1977 6,001 - -:.
1978 6,815----
1979 7,429 "
1980 6,977 "
1981 7,034
1982 7,078 "
1983 7,413 "
1984 8,422 "
The year 1984 proved to be a significantly high water use period, a
result of the record low rainfall recorded during the first nine months.
Projected water use, Livermore district:
1990 8,600-.acre feet
1995 8,900 -acre feet
Based upon Company records in Livermore for :1984, sales ::percentages
can be applied to the following uses:
--Residental --73.4%
--Industsrial 0.1%
--Commerci al 7_9:9%::..
--Governmental 11 .0%-
--Other (construction)
--Unaccountable 5=5%
2
II . Conservation Measur Currently Adopted and Being P, ticed
The Company divides its conservation program into two distinct
categories:
--Measures adopted by the Company and outside agencies to achieve
public support for water conservation.
--Measures undertaken internally by the Company to achieve water
conservation and better manage its supply.
A. Current Measures to Achieve Public Support for :Water Conservation -.
1 . Public Information Programs--The Company-,has undertaken- a =-
number of public information activities -to- win -customer support =for water = -. --
conservation (See exhibits)
(a) Preparation of brochures on conservation to be used
as customer handouts.
(b) Preparation of customer bill inserts to promote water
conservation. The inserts are distributed to customers on a regular basis.
(c) Publicity releases and advertising to , the local .press
to promote customer awareness of water conservation.
(d) Distribution of "Waste of Water" notices by field
personnel to homes and businesses where outside waste of water is observed.
The notices also include a review of ways to conserve- -water _both inside. and
outside the home. -=
(e) Printing of postage message on .all outgoing . mail
urging water conservation. -
(f) The Company's new "billing" format :which .includes. a
detailed summary of each customer's water use in hundreds of cubic feet and in
gallons for each of the preceding months. This is -proving to be a helpful
tool for customers to monitor water use - and '-.-determine- the-. effectiveness,--of - ..
their water conservation efforts. _
3
(g) water conservation demonstr )n garden has been
developed on a section of Company property in both Visalia and San Mateo
districts and is currently being developed in Livermore. Various promotional
materials on garden has been developed as shown in the attached exhibits.
(h) Maintaining an active program to distribute water
saving kits to customers throughout the Livermore district. Company-wide, it
is estimated that more than 100,000 water saving .kits have been distributed
since the 1976 drought. As part of each - kit., a ..-brochure:.i s distributed
providing not only tips on water conservation.:::_but :also .i.nstructions on.:use of .
the kit. Each kit consists of a plastic bag : for- toilet tank - displacement;
shower head flow restrictors and nontoxic-._-dye-.:#-ablets -::to.check --for leaks.- ___
inside toilet tanks. The Company publicizes availability of the water kits
through news releases and office displays.
(i ) During the drought of 1976-77, the Company .developed
a . San Francisco Peninsula-wide rationing plan for all customers including
those in the San Mateo district. The rationing program was described in a
bill insert mailed to all customers. The plan is on file and has been
approved by the California Public Utilities Commission to provide a guide and
format. The plan, though not needed today, is in place for future use if any
emergency water shortage period should occur in the Livermore district or
other Company district.
2. Government Ordinance--During the drought, --the � Company
prepared a model resolution to promote "reasonable. conservation - of water
among governmental jurisdictions ' in the . Company service areas:. .:It provides -a
frame work (if conditions warrant) for the orderly :and -.timely :implementation .
of reasonable water conservation measures by citizens within -various
governmental jurisdictions including those of the-tivermore district.
i
4
B. Measures rently Undertaken Internall 'y The Company To
Achieve Water Conservation And Manage The Supply
1 . Water Use Records--The Company has maintained extensive
records on individual customer water use for the past 35 years.
2. System Improvements--The Company believes that an on-going
capital improvement program, especially relating to water main repair and
replacement, is one of the most effective means to achieve internal
conservation by reducing leaks and the .__.percentage of unaccountable-.-grater,
More than $2.6 million has been spent---.during--. the*:-Opast- five -years -'-toward..
upgrading the Livermore system, part of_.-which -teas--been -directed toward main
replacement and repair.
3. Leak Detection Program--System surveillance to detect leaks
is an on-going and a normal part of daily operations. During a 2-1/2-year
period from 1976 to 1978 covering the drought years and immediately . :
thereafter, the Company initiated a special leak detection program in most of
its districts statewide using sophisticated detection equipment. The leak
detection program included testing of more than 716 miles of main, 4757
hydrants, 35,834 services and 8858 gate valves. A thorough evaluation of this
special leak detection program was made, by the Company of the statewide
program. It was determined that this special program utilizing leak detection
devices was not cost effective and as a result the devices have been utilized
only sparingly since the drought.
A review of results Company-wide are as follows:
--716 miles of main tested; 40 leaks detected .
'--4757 hydrants tested; 34 leaks detected
Most of the leaks discovered were a result of service calls to
customer premises with 35,854 inspections -.netting. --563 -.:leaks -and gate Valve
testing netting 53 leaks of some 8858 valves tested. ,..However, in the
5
customer service check id gate valve program, it estimated that a
substantial percentage of the total leaks found would have been detected and
corrective maintenance undertaken in the normal course of system
operations. . .i .e. meter reading, opening and closing of gate valves.
4. Seasonal Pricing and Peak Demands--Proposals have been
extended by public agencies and by advocates of water conservation suggesting
adoption of a seasonal pricing structure for water on the theory that
distribution systems are sized to meet peak.-.demands and it is -equi tabl e:that --.
those who contribute to the peak demand pay the -added -cost. -- However,:-the peak-_ .
demands water systems are designed to meet almost -universally .-the - fi re flow
requirements of the local fire protection._ agency. Peak demand .. -water-
distribution for domestic service can almost always be easily met within these
fire flow requirements. Investor-owned water utilities are required to
construct their water system facilities to meet the fire flow specified by the
local agency while concurrently being prohibited from charging for such
service. Evaluation of a revised pricing structure for conservation purposes
reveals that there is no justification for seasonal rates for regulated water
utilities.
III. Alternative Conservation Measures (to improve efficiency of water use)
A. Public Education School Program
During the drought period, the Company -conducted .-to .a ..limited
degree, a public education school program on ,water conservation :in .selected :
districts. The Company feels such a program s.houl d =agai n be _pursued wi-thin
the schools of Livermore. Plans are now.::-to-.incorporate . such.---a- program into
the Company's overall conservation effort.- Utilizing services provided -by the
Department of Water Resources and low cost .-educational aids available through
DWR, the program is expected to be a high result/low- cost- effort with total
support from school administrators and teachers. -.:,.No .speci.fic..negati.ve. :impact
is anticipated through .such a program. -
6
S. Rate Struc e/Conservation--Many officia' )ositions on water
conservation advocate rate designs in metered districts which would increase
block rates (large quantity rates) to encourage lower water use. Studies made
and presented before the California Public Utilities Commission by the
California Water Association have demonstrated that water use is not
significantly affected by price or rate structure. This is because water is
too inexpensive a commodity and its benefits too great to be affected by
relatively small increases for greater usage by-the .average .consumer.
However, the Company will pursue a __program which .---seeks the - ---
cooperation of the Public Utilities Commission in. developing ..a conservation
rate design which maintains the financial -integrity of -the -Utility while at
the same time encourages an aggressive effort by all utilities to win customer
support for conservation. Such a rate structure calls for the "leveling" of
the customer's monthly water cost throughout the year rather than allowing
"extremes" in water bill charges from summer to winter months.
A more stable monthly revenue base, - providing for recovery of . a
utility's fixed cost, could be achieved through a realistic monthly surcharge
on all bills and result in lower bills during the summer months and higher
bills during winter periods . The summer months thus become less critical as
an income-producing period for water utilities and the important business of
managing and conserving the supply can be pursued_with even greater._.Yigor...
C. Increase Levels of , Current Conservation - Program--It is
anticipated that current levels of conservation .-activities ..presently .under.-way
(as in Paragraph II) can be increased to .some- -deg:ree_;in,,:the.. overall effort::: a.
improve efficiency of water use in the Livermore district. -No negative impact
is forecast through this effort.
IV. Schedule of Implementation for Proposed Action Jas -described in ..Section
III)--Depending upon the cooperation of Livermore school---officials;_ : t.-lis.; .-. .
anticipated that an in-school water conservation-_ education. ::pragram .can--begin
no later than 1986.
7
--An increase the level of conservation tivity described in
Section I I-A and I I-B will begin during 1985 and be an on-going effort during
following years.
V. Frequency and Magnitude of Supply Deficiencies
Historical data has shown that the Company's Livermore system has
not experienced regular or frequent supply deficiencies during the past 15
years. Groundwater graphs charted at Company-owned wells in Livermore
indicate that the 1985 water table in Livermore is :near equal to -that -level
charted 14 years ago in 1971 (See exhibit) _ .
8
EXPANDED PLAN
Projecting Future Use and Need for
Expanded or Additional Water Supplies
Forecasting a significant increase in population during the next
decade, the Company anticipates the need for developing additional capacity
during this growth period. It is undetermined at this time when the need .for.-
new sources (wells) will occur since wells are- usuall.y drilled :at the. time .of
construction of a new development. Historically, this has been -dependent- upon
the economic situation of the area.
I. Waste Water Reclamation--Waste water reclamation as an alternative
source of supply is not applicable since the Company has no potential customer
for such a source in the Livermore area.
II. Exchange or Transfer of Water on a Short-term or Long-term Basis
Other retail purveyors of the area draw supplies from the Company's
very same sources including the water agency and the underground basin. Thus,
an exchange or transfer system does not appear practical or beneficial .
III . Management of Water System Pressures and Peak Demands
The district is divided into 8 pressure zones or areas consisting of
wells, booster pumps, storage tanks and _pressure regulating malve.s -which .start
on demand not only to provide adequate-. flow to customers without creating
excessive high pressure but also to meet average and peak loads.
IV. Incentives to Alter Water Use Practices
As outlined in the Basic Plan, the ' Company' has an ' on-going,
extensive retrofit program currently . ..in place providing free shower
restrictors, toilet tank bags and leak detection tablets. . The Company -also
9
supports state programs now in effect dealing effecti., iy with the on-going
efforts to achieve low water use within the home through use of plumbing
fixtures and appliances.
V. Public Information and Educational Programs to Promote Wise Use and
Eliminate Waste
The current programs for public information as outlined in the Basic
Plan have proven successful and well received by customers. We would hope to
expand these efforts as needed and opportunities open. We have considered for
ssibie future im lementation the followi,n.
Po P 9 -Programs:
1 . Cooperative ventures with various student (Boy/Girl Scouts)
and adults (garden clubs, etc.) groups in -.winning - public support for
conservation.
2. Water conservation contests involving schools in developing
conservation slogans and public service spot announcements for use during
summer periods.
3. Special county awards for conservation efforts and ideas.
4. Cooperative campaign with nurseries to promote low water
use plants.
VI . Changes in Pricing, Rate Structure and Regulations
This subject area has been addressed in the Basic Plan as one which
is of primary interest to the Company now and. .for the future. As previously
stated, the Company will pursue a program which - seeks the- .cooperation of -the
California Public Utilities Commission -An developing a "conservation rate
design" which maintains the financial integrity of the water utility. This
basically is one which calls for a "leveling" of water bills throughout the
year through use of surcharges rather _than extra charges for higher usage
(generally during the summer) . It is a concept for-- both private and public
water systems to pursue.
10
YII . Evaluation of Alte ;ive Water Management Practice
The recommended alternative water management practices identified in
the Basic and Expanded Plans have been evaluated separately as to their
environmental , social , health, customer and technological impact. It has been
determined that the alternative practices as recommended do not create any
adverse impact as they relate to the criteria stated.
VIII. Cost of Alternative Water Management Practices vs Cost of Expanded or
Additional Supplies
Approximately 70% of the Company's Liven.roore -supply As .derived -from
Zone 7. The Company must look to the public agency. . .Zone 7. ...to --maintain
and develop sources of supply as the area's -primary -wholesaler. --Since the
district has responsibilities for developing supplies for other urban water
purveyors of the district, determining costs of expanded and additional
supplies based upon total requirements of all its customers must be the
responsibility of the district. This subject is addressed in the Zone 7
Management Plan which is . referenced as . part of the Livermore district's
Expanded Plan.
The Company's other water source is derived from the underground in
Livermore. Almost always, additional supplies (new wells) are developed to
serve new subdivisions in the periphery of the existing system. Water
conservation accelerated by existing customers within a system would not,
necessarily fulfill the demands for additional - supplies by the new area since
investor-owned water utilities are required to construct their water mains to
meet fire flow requirements. With this important fact to consider, it is -felt.
that water conservation can't be considered a viable alternative in meeting
system needs of future well supply expansion in Livermore. This, despite the
fact that the incremental cost (for a new well $150,000 plus pumping costs)
would significantly exceed the cost of present and alternative water
conservation practices to achieve a 5 or 10% -reduction in .use.
11
ATTACHMENT 2
ZONE 7 WATER OPERATIONS
SUMMARY OF ANNUAL TREATED WATER USE
(Units in Millions of Gallons)
LIVERMORE DSRSD CWS PLEASANTON OTHERS GRAND 'TOTALS
IQ - 10 or IQ - 210 IQ - 1,000 IQ - 1,141 (2) IQ - 12 IQ - 2,373(3)
31 AF 644 AF or 3,067 AF or 3,500 AF or 37 AF or 7,279 AF
Year Zone 7 IQ Total Zone 7 IQ Total Zone 7 IQ Total Zone 7 IQ Total Zone 7 IQ Total Zone 7 IQ Total
1962 - - - - - - 107 920 1,027 - - - - - - 107 - -
1963 6 0 6 - - - 261 782 1,043 - - - 68 12 80 335 - -
1964 25 0 25 133 226 359 366 864 1,230 - - - 78 12 90 602 - -
1965 52 0 52 232 210 442 430 823 1,253 - - - 85 12 :97 799 - -
1966 85 0 85 379 210 589 604 876 1,480 - - - 79 10 89 1,147 - -
1967 91 0 91 354 210 564 593 929 1,522 - - - 77 12 89 1,115 - -
1968 173 0 173 431 210 641 872 854 1,726 86 667 753 113 6 119 1,675 1,737 3,412
1969 161 0 161 504 210 714 958 898 1,856 277 653 930 85 0 85 1,985 1,761 3,746
1970 179 0 179 627 210 837 1,193 828 2,021 421 820 1,241 140 9 149 2,560 1,867 4,427
1971 213 0 213 506 210 716 1,229 839 2,068 847 695 1,542 107 12 119 2,902 1,750 4,658
1972 281 0 281 582 210 792 11403 823 2,226 1,049 694 1,743 66 8 74 3,381 1,735 5,11b
1973 311 0 311 610 200 810 1,442 816 2,258 1,163 744 1,907 88 5 93 3,614 1,765 5,379
1974 396 0 396 608 211 819 1,463 855 2,318 1,262 794 2,056 97 0 97 3,826 1,860 . 5,b8o
1975 395 0 395 645 210 855 1,421 906 2,327 1,343 745 2,088 73 0 73 3,877 1,861 5,738
1976 479 0 479 667 210 877 1,825 824 2,649 1,515 802 2,317 118 0 118 4,604 1,8jo 6,440
1977 370 0 370 472 175 647 1,440 511 1,951 1,001 880 1,881 75 0 . 75 3,358 1,566 4,924
1978 452 0 452 553 175 728 1,585 637 2,222 1,135 923 2,058 58 0 58 3,783 1,735 5,518
1979 467 0 467 607 138 745 1,622 801 2,423 1,172 1,003 2,175 58 0 58 3,926 1,942 5,868
1980 521 0 521 778 0 778 1,467 808 2,275 1,207 1,044 2,251 50 0 50 4,023 1,852 5,875
1981 564 0 564 834 0 834 1,451 842 2,293 1,373 1,060 2,433 50 0 50 4,272 1,902 6,174
1982 546 0 546 793 0 793 1,543 811 2,354 1,178 1,161 2,339 56 0 56 4,116 1,972 6,088
i
1983 571 0 571 850 0 850 1,588 832 2,420 1,361 1,159 2,520 72 0 72 4,442 1,991 6,433
1984 687 0 687 970 0 970 1,714 1,011 2,725 2,160 1,123 3,283 163 0 163 5,694 2,134 7,82d
1. IQ - "Independent Quota." The IQ by contract is defined as the maximum quantity of water that a retailer is allowed to produce in any year for
use in its service area from all sources independent of Zone 7. The IQ amounts shown are pumped groundwater by the various retailers.
2. Increased 150 AFA beginning in 1973 and ending in 1982 with a total of 3,500 AFA.
3. Increased 150 AFA beginning in 1973 and ending in 1982 with a total of 7,279 AFA.
4
R E 5 p0�pc�'
s .
2 ALAMEDA COUNTY FLOOD CONTROL AND WATER CONSERVATION DISTRICT
a a
5997 PARKSIDE DRIVE S PLEASANTON, CALIFORNIA 94566 / (415) 484-2600
4\
'VA GEME�
April 10, 1986
Mr. Peter Snyder, Mayor
City of Dublin
P.O. Box 2340
Dublin, CA 45 8
Dear Ma nyder:
Recently Zone 7 sent you, members of the City Council and principal staff
personnel copies of a report on water supply and demand projections.
I feel that mutual understanding and good communication between Zone 7 and the
cities within its district will be extremely important to the orderly, high
quality development of the Livermore Valley area. I would, therefore, like to
request the opportunity to appear before one of your council meetings to make a
brief oral presentation of the water supply report and to answer any questions.
If you have a particular time that would be convenient, please contact me
(422-8159 days) or the Zone 7 staff (484-2600); I am asking our staff to
coordinate the schedule.
Sincerely,
2
R ert W. Buddemeier, Chairman
Board of Directors
RWB:bkm
P.S. We are pleased to have initiated informal meetings between Zone 7 and
Dublin officials and look forward to continuing this channel of
communication.