Exh 2Bz~
3-Z~ - 99
~nry Dean, Executive Qrector
John R Wehle, Assistant Executive Oirectoc
RIV
~~' f1%l ~AGE~IEIVT
DISTRICT
March 29, 1999
David Thompson, Interim City Manager
City of Atlantic Beach
800 Seminole Rd
Atlantic Beach,lZ 32233
POST OFFICE BOX 142° PALATKA, FLORIDA 32178-1428
TELEPHONE OOt329~4500 St1t~ICOM 9D<J60.4500
Too 9aaz9~45o TDO SUtJCOM eeo-<.tso
FAX (Executive) 529-4125 (LepaQ 329rtd8.5 (PertnitGrq) 928-1315 (AdminlstratlonlFinance) 32g.45pg
SERVICE CENTERS
618 E Sash SU ed T773 Bay;needo~-s IHsy PERMITTING: OPERATIONS
OrWdo. FlOftds 12601 SUte 102 105 East Oiftve 2t11 N.1Mddwn Road
407-697-1100 Jscfaomlle, Flxtds 12256 Uebour+e, Flortds 12904 McDanb. FfoAde 32915-6109
TDO t07-697-3960 904-710-6270 107-9844910 407-7523100
T00904+t8-7900 TD040T-T22S368 TD0407-732J102
Subject: Water S'uppljy~Presentation, May 24
Dear Mr. Th~~~-`'~Y ~
The St. Johns River Water Management District requesu an opportunity to address the City of Atlantic
Beach Council concerning the results to date of the District's Water 2020 project at your May 24 meeting.
Water 2020 is our District's response to a legislatively mandated water supply planning effort, which is
designed to ensure the availability of water for all existing and projected reasonable-beneficial uses and to
sustain the water resources and related natural systems through the year 2020. The District has worked
toward this goal through a cooperative process with your government and interested parties, government-
owned and privately owned water supply utilities, self-supplied water users such as agricultural irrigators,
regional and state governments, environmental and special interest groups, and the general public.
This cooperative process has been carried out through Work Group V, which has been meeting regularly
for more than a year. A draft water supply plan for the work group in your area is currently being
reviewed. This draft plan identifies alternative water supply sources and strategies adequate to meet the
water supply needs of the area through 2020. Work Group V's draft plan, when finalized, will become
elements of the District Water Supply Plan, which is scheduled for completion in October 1999.
The District recognizes that a water supply plan needs the support of local entities. Therefore, the District,
at the time of the presentation, will seek your Council's endorsement of the alternatives and
recommendations included in the plan as well as any input your Council might offer. Input offered by your
Council will be integrated into the final plan.
Copies of Work Group V's draft plan will be forwarded to you prior to the scheduled presentation. If you
have any questions or concerns, please call me at (904) 448-7904 or page meat 1-888-250-6107.
Sincerely,
~~j /
B. Kraig McLan AICP
INTERGOVERNMENTAL PROGRAM MANAGER
Jacksonville Service Center
cc: Margaret Spontak
Barbara Vergara
l
Dan Roach, cswaruw Duane Ottenstrcer, TREASURER Otis Mason, sECRETARY ~ William Kerr
FTJiNAtlOWA ~~ SY4Tit>3i<.Ai10 ST. AIK,USiW E
Jeff K. Jennings William M. Segal Ometrias D. Long Clay Albright ~~~ Reid Nughes
~T~'o MAfTLAt7D AroruA EA,sT LAKE WEIR OAttOrtA BEACN
Wafer 2020
Work Group Area V: Northern Sf. Johns and
Soufhern Duval Counfies
'Wafer Supply Plan
by
HDR, Inc.
edifed by
CH2M HILL
' Suite 300
5100 W.Kennedy Boulevard
Tampa, Florida
v
+~.r~cru~r~tLL
3011 S.W. Willisfon Road
Gainesville, Florida
April 1999
130581.RP.PA
Executive Summary
EXECUTIVE SUMMARY
INTRODUCTION
St. Johns River Water Management District (SJRWMD) in cooperation
with local government representatives, major water users, public supply
utilities, and concerned citizens, is developing adistrict-wide water-
supply plan that will identify water-supply options sufficient to meet
projected water needs through 2020 without harming the water resources
or ecology of SJRWMD. This planning process ~~cnown as Wafer 2020.
n
To facilitate its planning efforts,
into six work group areas. These
water resource caution areas and
hydrologically and culturally ass
caution areas. Awater-supply p]
This plan details the planning _~
Group Area V, which enconip~ s
portion of Duval County soufih a
group plans will be:~incluaed in t)
address 2020 water=~upr~~lv~-ne.eds
is planning region
-include priority
>=considered
:at~d=with the priority water resource
.is~.deueloped for each work group.
ss ancl~'r~commendations for Work
m~ost~af~~5t. Johns County and that
~ast'of the St. Johns River. Work
District Water Supply Plan, which will
The central elemet:of.the pliaztningprocess is the work group.
Membership::in_,tFie_virtarkgroup is open to all interested parties including
local gs~vernmeiit.represeitatives, water-supply utility representatives,
environmental groups, and concerned citizens. The work group met
four times=iri-19~8 to discuss water-supply issues and needs, and to
identify and~=evaltate future water-supply options. Special topic
subgroups were formed, as necessary, to address specific issues.
The work group planning process included developing future water
demand projections, identifying future water-supply deficits,
developing and evaluating alternatives, and selecting a plan. To
develop water-supply plans, each work group applied the most
relevant planning methods and tools to its respective work group area.
DEMAND PROJECTIONS
SJRWMD developed future water-supply demand projections in
consultation with major water suppliers. Water-supply demands for
the year 2020 were estimated for the following use categories:
~!
• Public supply
Work Graup Area V: St. Johns and Duzial Counties Water-Supply Plan
111
Executive Summary ,
f
' Domestic self-supply and small public supply systems
• Commercial/industrial/institutional self-supply
• Thermoelectric power generation self-supply
• Agricultural self-supply .
• Recreational self-supply
In Work Group V, the greatest anticipated increase in water-supply
needs is in the public supply category. Public supply needs are
expected to increase from about 65.9 million gallons per day (mgd) in
1995, to approximately 108.3 mgd in 2020, or abut 42.4 mgd
(64 percent). The increase in public supply ~n._eed~ is a direct result of
increases in population. During the samesperf~d=:the total St. Johns and
Duval Counties population is expected=to uicreas~ ~Y about 300,900,
from 816,500 to 1,117,400. ~ ~~ F= _ ~.
By 2020, all other needs aze also ezp~c~ed~t~increase by about 11.2 mgd,
except for domestic self-suppJ:X which=is projected to decrease by 4.3 mgd
in 2020. Thus, the net change in~iese other'"use categories is an expected
:~ti~
increase of 7 mgd (11 percenfJ^by 2Q20:~T,~us increase means the total
water use in the area of ~!York`Giou,.p~V"is~expected to rise during the
planning period b~ ~bvt~~ 53 m=~d~#_o a total water use of about 180 mgd.
t 1 ~ ~~ t Y t~ L~'
The 2020 needs li~;ma~ jo~~ubli~~supply utilities are summarized in
Table ES-I. ~.iis_tall:~ includes`the actua11995 use, projected average
day 2020ne~ds;_ari~i pro, jetted 2020 needs including the effects of a I-in-
10 year-iiraught. ~'Tli~ Wader 2020 planning process also considers the
. impact of: d-~ught...~cotditions to ensure that water-supply needs will be
met even i?:d~.~ad~erse conditions. The methodology used for I in-10
year drought'glanning is described in the final report of the 1-in-10
Year Drought Subcommittee of the Water Planning Coordination
Group (1998). Public supply needs are projected to increase by 46.24
million gallons per day (mgd). The net change for all other users in this
area increases by 10.97 mgd. The change in public supply is more than
four times greater than the net change in all other categories. For this
reason, this Work Group Plan focuses on public supply.
2020 DEFICITS
Water-supply deficits are of two types: source deficit and facilities deficit.
A source deficit is the difference between projected 2020 needs and the
. quantity of water a source can supply. A facilities deficit is the difference
between 2020 needs and an existing water-supply facility's capacity.
~'
Work Group Arun V: St. Johns and Duaai Counties Watar-Supply Plan `
ITl
Executive Summary
~~
Deficits are determined for each public water supply demand center on a
case-by-case basis. Tn general, supply source limitations often determine
average day demand (ADD). deficits, and the production capacity of
existing water-supply facilities define maximum day demand (MDD)
deficits. The supply source must provide the total volume of water
needed for long-term operations, and the water-supply facilities
(wellfields, treatment plants, transport systems, etc) must be capable of
delivering peak demands. Therefore, ADD deficits are most often
source deficits and MDD deficits are often facilities deficits.
For Work Group Area V, the ultimate sustainab7e~source capacities are
largely unknown. Therefore, deficits forthe=mast part consist of facility
S: tom:. L,
deficits controlled by awater-supply systemrs ai~ilt=y to meet MDD.
=__
Table ES-1. Work Group V Publi~-Stipp~y Average~Day Water-
_.
~;.` _;:
Supply Needs `~
.~.~
1
' -~ .~' ~ 7„ s S i~ ~ ~L M Ras:+k.`~S~'+~iC:~~.+C~ ~ ..:.au; s~ N' ~.~=~
e; marid:C~enfer~(Utllity) "~ 995_,,, ~•~ ,~,,, 2~) ~x ~>~~?O:PIus;Diou„~c ht~'
GDU Julington Creek _ '_ ~_32`_;r =
c _ _ ~ 2.70 2.86
Intercoastal Utilities ~•~== '_ =1..08 6.09 6.46
North Beach Water _ t m t' ~'~ 0 ~' 120 1.27
"' ~ ~'^
City of St. Augustine =_
-
` ==x.24 3.91 4.14
__
z_
":. ~=
St. Johns ~;ouPty=tJ;ilit~es
3.26
13.50
14.31
SL Johri§ Service Cori~a~y
a. 4 1.96 3.53 3.74
F
United Water Fiorida.(St.~9ohns)
~
"
1.40
3.45
3.66
_~
T ~
Subtotal St. Johns Gounty
.10.40,
34.38
36.44
City of Atlantic Beach ~ 3.15 '' 4.35 4.61
Florida Water Services 1.83 326 3.46
City of Jacksonville Beach 290 3.80 4.03
City of Jacksonville' 33.1 43.3 45.90
City of Neptune Beach 1.21 2.16 2.29
Regency Utilities . 0.94 123 1.30
United Water Florida (Duval) 12.30 15.83 16.78
Subtotal Duval County 55.43 73.93 78.37
Total 65.91 108.31 114.81
'Supply needs for only the portion of Jacksonville Electric Authority service area within Work
Group V. Percent of utility needs within Work Group V adapted from demand projection
information presented in the Jacksonville Electric Authority Water Faalities Plan August 1998.
Work Group Arca V: St. johres and Duval Countus Water-Supply Plan
a
Executive Summary
For some utilities, existing withdrawal and treatment facilities maybe
adequate to meet future public-supply demands. In other cases,
meeting future demands could involve developing additional facilities
and possibly alternative water-supply sources.
The public supply utilities in the work group currently withdraw fresh
ground water, mainly from the Floridan aquifer. Wellfield operational
experience suggests that these fresh ground water sources maybe
further developed on a limited basis. Therefore, this report considers
increased withdrawal from the aquifer as an option in the work group
area. However, the fresh ground water source~~:~iot unlimited and the
further development of this source within 3~ork~-!Group V must be
carefully evaluated and monitored on arase by.sa's~ basis.
Brackish (slightly saline) ground w
County area of Work Group V, bud
therefore brackish ground water is
source in the St. Johns County~oi-f
River is an abundant water souz`+`e,
the water quality of the river is ~.iig
r F s. r
require substantial treatn~tent. ~t w
~.
costly to utilize th~~S~ Johns;River
Work Group V. ~:io~.ever•tliewat
_ z_ _
River is
tota120:
po
abunclazi~ in the Duval
lant in St. johns County;
able alternative water
~k Group V. The St. Johns
area of Work Group V
e, and this source would
uld be difficult and relatively
> an alternative water source in
quality in the lower Ocklawaha
water-supply yield far exceeds
Table E~~=summes the estimated MDD facility deficits by major
water-supply.~ztilify` These deficit estimates represent the difference
between the~p~ro~ected MDD needs for 2020 and the current facility's
capacity. The i-~ported deficits include the effects of a 1-in-10 year
drought.
Table ES-2. Water-Supply Facility Deficits for Major
Public Supply Utilities
n
~. ~ mart ~ n e . Iitjf MDD~De cit.T mgd-for ~
'f ear= rougtit~Year. ~~-.
GDU Julington Creek 4.50
Intercoastal Utiiities 7.40
North Beach Water System 1.52
Ciry of St. Augustine 0.38
St. Johns County Utiiities 15.59
Work Group Area V: St. johns and Ihc~l Countus Watcr-Supply Plan ,.
vi
Executive Summary
Table ES-2. Water-Supply Faciiities Deficits for
Major Public Supply Utilities (continued)
~
;~ ,em~ri~~„~,nfe~;(Utllity`~'- DD~d~or
-n~- O,~Y~Rar~brought~Year,~,~
St. Johns Service Company 0.73
United Wafer Florida (St. Johns) 6.21
City of Atlantic Beach 0.00
Florida Water Services 3.52 ~ ~.
City of Jacksonville Beach 5.36r ~~-
~
_
Jacksonville Electric Authority' _
~~7~9'2 ==_ 't=_
r =. -~ -
«
City of Neptune Beach T.
~~ ---~ ~~1.12 .~ ~. ' _
RegencyUtitities z: ~=. ="0,:65
~~ =.~=: -
United Water Florida (Duval)
r. ' ~' ~~ =7.67
= ?::
_~.. ~..
t..
z E- -_.
'For the Jacksonville Electric Authoritys}tsterris.ttte deficit consists of
2020 needs minus 1995 actual demand:. ~ ._ ~-
~ 'VITATER-SUPPLY PLANI~N~O LTATIONS
Water supply plai~.in~ for Vl~~ar~c Group Area V is characterized by
uncertainty:~__T£_ze=areais=growing, and water supply needs will increase
significantly. Fi~llYy=adequate planning tools, including expanded
region~l_gound water and water quality models, are not available to
evaluate4~afer resource management alternatives, such as the long-
'.' ~ _• rr
term consegt~eriCes of increasing fresh ground water withdrawals.
S)RWMD is developing the information and tools needed for future
water supply planning. These include unproved ground water flow and
solute transport models; additional wellfield monitoring and
operational data; and continued wetland monitoring. This information
will help narrow the existing level of uncertainty, and aid future water-
supply decision-making. Adaptive management will likely play a
major role in future water-supply development, so the planning process
should build in some flexibility. For this report, the Work Group Area
V water-supply plan is developed based largely on the collective
judgement of the work group. Results and recommendations reported
- here may change as more information is developed.
. .,Future demand projections are also uncertain, especially for Work
n Group .Area V, where increased population growth is both recent and
.. rapid. Therefore, the exact rate and pattern of growth for this work
Work Group Aria V: St. johns and Dutnl Counties Water-Supply Plan
X12
Executive Summary
f
group is subject to greater uncertainty than in areas with established
growth patterns. If demand growth is faster than projected, then the
water supply facilities discussed in this report will be needed sooner
than presently expected. If growth is slower, then more time maybe
available to implement water-supply plans.
Currently, there are no known regional adverse ground water
withdrawal impacts within Work Group Area V. Some local problems,
including salt water upconing and wetlands dehydration currently
occur or are suspected, but these adverse impacts^are not widespread.
However, additional adverse impacts will mosE likely increase without
careful planning. _ r _`" _.
r s
The key word, for this initial water
probable that Work Group Area V.
withdrawals beyond current levels,
locations of the allowable increase
monitoring and model
accurately estimate the
and locations. .
The initial water
ground water w3
with small 2020 ~
included .iri~the ~~
water
WATER-SUPPLY O
app-Iy~plans_caution. It is
n:sncrease fresh ground water
i
'r`tzte=magnitude and optimal
uncertain. Ground water
is un~errway and will help
=~qun~ water withdrawal rates
Y~lan assumes utilities can increase fresh .
nrals,~.especially some of the smaller service areas
~sand'ii~iited alternatives. Future analysis, to be
e=-year update of this water-supply plan, will be
>iate the magnitude of acceptable fresh ground
decrease current planning uncertainty.
S AND ALTERNATIVES
Awater-supply option applies to an individual utility and its demand
center. An option is any action that will meet a demand center's Water
2020 deficit and thereby meet future water-supply needs. A water-
supply alternative is a group of water-supply options which, when fully
implemented, will meet the work group area's water-supply needs.
Table FS-3 presents a matrix of the utility specific options identified by
the work group. Organized by demand center/utility, nearly every
. listed option meets the anticipated 2020 water needs for its respective
demand center. To evaluate these options, this report compares the
total production cost per 1,000 gallons of the various supply and
treatment options, in addition to discussing the advantages and
. disadvantages of each.
Work Group Area V: St. Joluss and Duval Counties Water-Supply Plan
x111
Executive Summary
l
Table ES-3. Utility-Specific Water-Supply Options Identified by Work
Group
' + ,~ • ~'~.Jf -~
~~~~emarid' 'Hier " ~Fr~esh
mound
G .~-- w~~
urtace''s~' ~B~cklsh=
~Grocin ~' ''c
~ i ~.~`:` t'r:`,
st
c
U ~
~ ~` N
e
~r . ~
em~
~~~.
1~~
.~~ Y
1M1~/ater _
_ Ia r~ to
~
1 ~esaliaation ante co
nnects'
GDU Julington Creek 'k
Intercoastal Utilities '~`
North Beach Water System * _'~ z
='w
City of St. Augustine
'ti ~" ~•
~ t=
.
~'
St. Johns County Utilities 4r *• ~
~ s ~
=~•
. __ = ~
St. Johns Service Company
'r ~:
~ ~ ~
z
a
z:..
= ~=
_ - _
United Water Florida '~` ~= _T ~.
City of Atlantic Beach ~` ~''-
• _~ _ _
_ _
~ __
_
Florida Water Services -_ ~ ~` L
~ ' ~ ~~
'
~ . z
_
.~
~N li:' ..
City of Jacksonville Beach-'
t~ c: _
~ •l.
~: ~_*
a• - ~
`-
''Y
City of Jacksonville ^i= _ -r.•
r"
isF - " 'F ==" ~ ~ '~
City of Neptune each ~•-= _~ -
- = -
"
' _ ~~ ~`
-_
ti •_:.
~
Regency Utilities ~ s
•z. ,., r
Un'ried Water f=lvrida = ` ~
~
~
Tz,. •r'
In additiori to the utility-specific options, this report discusses and
evaluates selected work group areawide options. These include
additional water conservation and reuse strategies to reduce future
demands, and seawater desalting to meet increased demands.
ALTERNATIVES DISCUSSION
All options listed in Table ES-3 of this report are available to each
utility. That is, all of the 2020 water-supply options in Table ES-3 are
technically and financially feasible, and each utility is free to investigate
and pursue development of any of these options. All listed options
comprise the Work Group Area Vwater-supply plan. There are,
worx croup Area v: st. jokns acrd Duval counties Water-Supply Plan
1X
Executive Summary ~ ' ~...
however, some clear differences among the options evaluated,
including a wide range of projected costs.
Water-Supply Utilities in St.~Johns County
Seven major water-supply utilities serve St. Johns County. However,
as illustrated in Table ES-2, only one utility, St. Johns County Utilities,
accounts for over half the 2020 ADD deficit. The deficit for the
remaining individual service areas is relatively small, and in many
cases expanding existing facilities appears to be most feasible
alternative likely to meet 2020 needs. ~~~
= r
GDU Julington Creek
The recent permit-renewal quantities
Upgrading and expanding the existir
ground water is the only logical optic
Intercoastal'Utilities
Intercoastal Utilities has exis
needs. Its deficit is based_on
facilities needs to
.adequate to meet
demand ratio, po
activities, cou~cl"~l+
NorthBeach Wai
close ~r~,the 2020 needs.
. to use: additional fresh
time.
twill meet the 2020 ADD
permitted wellfield capacity and
. ~~'he existing system should be
needs. A decrease in the system
additional water conversation or reuse
need.
Compared_to ~he.~otal work group area 2020 needs, the North Beach
Water Systems needs are small. Upgrading and expanding the existing
system to use additional brackish ground water is the only logical
option at this time.
City of St. Augustine
The City of St. Augustine currently has existing facility capacities to
• meet the 2020 needs. The existing source of supply has currently .
permitted withdrawal limits that are lower than 2020 needs. However,
if further evaluation of the current source indicates fresh ground water
availability (i.e. if wetland impacts associated with wellfield pumping
are less than projected or can be mitigated), then the existing system
should be adequate to meet future needs. In addition, an
interconnection with St. Johns County Utilities could provide the City
and County additional water supply flexibility while other options are
• studied or implemented.
Work Group Area Y: St. johns and Duval Counties Water-Supply Plan
x
Executive Summary
St. Johns County Utility
The largest percentage of the 2020 needs and deficits in St. Johns
County occurs within this utility's service area. The projected needs are
large enough to make developing alternative sources potentially
attractive, both technically and financially. The options include
developing additional fresh ground water, developing a new wellfield
with membrane softening in the northern portion of the County,
processing a brackish water source with reverse osmosis water
treatment in the southern portion of the County~b_uilding an
interconnectionwith the City of St. Augustine;``arr~ securing fresh
surface water from the lower Ocklawaha Ri~ver.~=_
St. Johns Service Company
St. johns Service Company has
adequate to meet 2020 needs. ]
wellfield capacity. Upgrading--
use additional fresh Ground ~w~
time. A decrease in the
additional water conv~;
MDD needs and more c
United Water FI
~~ faeil_zties thaf~appear to be
:~estirnates are based on permitted
~cgancling the existing system to
:the only' logical option at this
~ncliratio, possibly through
se activities, could lessen the
the existing facility's capacity.
Compared~t~=tbe~fotalz~voz~k group area 2020 needs, the United Water
~~
Florida.~ieecis are~rnall. =rtJpgrading and expanding the existing
;:.
systemfia Ltise add{tional fresh ground water is the only logical option
r.
at this time.._ '__ .«r
Water-Supply Utilities in D
As with St. Johns County, approximately 50 percent of the 2020 ADD
increase in need will occur within one major service area. This area is
the portion of the City of Jacksonville's system, south and east of the St.
Johns River. The deficit for the remaining service areas individually are
relatively small, and inmost cases the current facilities are likely to
meet 2020 needs using fresh ground water. All alternative water-
supplysources will be more costly than the fresh ground water option.
City of Atlantic Beach
- The City of Atlantic Beach has existing facilities that will meet the 2020
needs. Its deficit is based on wellfield permitted capacity. If future
~^~ inland ground water withdrawals can be optimized to avoid impacting
Atlantic Beach water quality, then the existing system will meet future
Work Group Area V• St. johns and Du~aI Counties Water-Supply Plan
xt
Executive Summary
needs. It may be appropriate to interconnect the beach communities to
provide redundancy and flexibility for the water-supply systems.
Florida Water Services
Compared to the total work group 2020 needs, the Florida Water
Services area needs are small. Upgrading and expanding the existing
system to use additional fresh ground water is the only logical option
at this time.
City of Jacksonville Beach
~'
The City of Jacksonville Beach has e;
2020 needs. Its deficit is based on cu
The City has submitted a consumpti
quantities to meet the needs througl
City's existing wells. The main ar`~a
if future inland ground waterlwithd.
impact to the water quality.~f ~e-~i
proposed system upgrade sl~ou'lti b
may also be appropriate to in~ercon~
facilities that will meet all
r_evfierd_permitted capacity.
penrit~application for
with the'relocation of the
amity is almost built out, and
are optimized to avoid
`cksonville Beach, then the
:ate to meet future needs. It
;beach communities to
provide redundancy end ~Iexilility for the water-supply systems.
L. G L
~~ ~ S: 'L
X.' ~ ~' L
Jacksonville Electrc.A~uthor%i;y.~~r
•__
The largest:~perc~itage bf the 2020 needs and deficits in Duval County
porEion:ri~f ~iVor-1r~:G~oup-V_~ccurs within the City's service area.
Jacksoivi~e Electric *A.uthority is developing a plan to meet this need
and issued a=phase ~ Water Facilities Plan in August 1998. This plan
recommenc~s,t~ie~hase out of certain facilities and the improvement or
expansion of others. Jacksonville Electric Authority appears to have
most of the facilities required to meet the projected 2020 needs.
However, the projected needs are large enough to make developing
alternative sources potentially attractive, both technically and
financially. Options include new wellfields in the north grid portion of
the Jacksonville Electric Authority system, an interconnect to the south
grid to convey the new supply, surface water supply from the lower
Ocklawaha River, and sea water desalting.
n
Desalting seawater at the Jacksonville Electric Authority electric power
plants may have future potential if the projected lower desalination
costs are realized in similar plants proposed in other areas of Florida.
The Jacksonville Electric Authority Water Facilities Plan Phase 1 also
discusses, in its demand projections, the potential of acquiring the
private utilities within the south grid service area around the year 2005.
Work Group Arca V: St. johns and Duval Counties Water-Supply Plan
XIZ
Executive Summary
This purchase would impact the potential water-supply options to be
considered for those utilities and Jacksonville Electric Authority.
City of Neptune Beach
The City of Neptune Beach has existing facilities that will meet all 2020
needs. Its deficit is based on its current wellfield permitted capacity.
The main area of the City is almost built out, and compared to the total
work group area 2020 needs, the City of Neptune Beach needs are
small. If future inland ground water withdrawals are optimized to
avoid impact to the water quality of the City of-Neptune Beach, then
the existing system can meet future needs. It~may be appropriate to
interconnect the beach communities to prvvide~zedundancy and
flexibility for the water-supply systems~~_ -- =-.
-~.
Regency Utilities t_s t ~ .~"'~. "~"'
Compared to the total countywide 2010 needs, the Regency Utilities
z.
needs are small. Upgrading=an`~`t~i~ -`-ex~ariding^the existing.system to use
additional fresh ground water ~s the onl:~r logical option at this,time.
t _
c ~_` r_ .
United Water Florida~Duval ~Cdur-ty)
_' r -c- c c ~
United Water Florida has a~elatvely large current demand within the
Duval County area of=~Vork~rssizp V. Its future needs will increase
approxima.tel~flper~.ent by 2020. If future inland ground water
withdraSwa~ a ~~optinii~eci to avoid impacting the water quality of
United =`V~a#er Florida, then upgrading and expanding the existing
system should be;roiisidered. If not, alternative sources, such as system
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interconnectori=iu:~th adjacent water systems, should be considered. A
decrease in the~~ystem demand ratio, possibly through additional water
conservation or reuse activities, could lessen the MDD need.
FUTURE OUTLOOK
The needs of Work Group Area V are currently met by fresh ground
water. This use will continue in :the future, and some additional fresh
ground water resources will be available to meet these future needs.
• However, fresh ground water is limited. The exact limits are currently
unknown, and inmost parts of Work Group Area V, fresh ground water
- resource limits may be reached by 2020. As the fresh ground water
resource limits approach, each new wellfield or wellfield expansion
strains resources and incurs financial risk. Utilities should evaluate
these risks before planning to further develop fresh ground water.
Work Group Area V: St. jofuu and F3uvaI Countus Water-Supply Plan -
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Executive Summary
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Although in some cases existing wellfield and treatment facilities can
meet the future needs, installation of additional pumping, treatment,
and transmission infrastructure will be needed to meet the 2020
demands. Additional research is necessary to evaluate what portion of
the new infrastructure should tap alternative supplies available to
meet future needs, in order to diversify and reduce risks. When the
Water 2020 Plan is revised in five years, more information will be
available to guide this decision and reduce the current level of
uncertainty.
Work Group Area V• St. johns and Duval Counties Water-Supply Plan
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