Manatee County Water Presentation

WATER 101

MANATEE COUNTY UTILITIES DEPARTMENT

WATER SYSTEM OPERATIONS AND PLANNING

Presented at BCC Work Session

October 13, 2015


WATER SYSTEM OPERATIONS AND PLANNING

Service Area

Current Facilities

Demands

Future Potable Supply Plans

System Operations/ Regional Integration


SERVICE AREA

Retail Service Area - 113,000 accounts Unincorporated Manatee County west of Lake

Manatee

Island cities of Bradenton Beach, Holmes Beach, and Anna Maria

Wholesale Service Area Sole Supplier

City of Palmetto, Town of Longboat Key

Partial Supplier City of Bradenton, Sarasota County

Total Population Served 325,000

Lake Manatee

LAKE MANATEE WTP

Surface Water 2 treatment trains 54 MGD capacity

Conventional treatment coagulation, flocculation, granular media filtration

Ground Water 30 MGD capacity H2S stripping, lime softening, recarbonation,

granular media filtration

Treated filter effluents combined, stabilized, disinfected (chloramines), flouridated

Generalized Schematic of Manatee County Water System Capacity

E.C. Wellfield(5) X 3.6 MGD(2) X 3.4 MGD

Mosaic Wellfield

(1) X 2.0 MGD,(2) X 9.0 MGD

(emergency)

Lake Manatee 5.9 BG full,

4.7 BG available

Raw 2(3) X 15 MGD

Raw 1(4) X 11.2 MGD(1) X 14.2 MGD

10 MG Gr. Stor 1

Gr. Stor. HSPS(3) X 10.4 MGD

C HSPS(2) X 12.8 MGD

N. HSPS (5) X 5.8 MGD

S. HSPS(5) X 5.9 MGD

ASR Wellfield(5) X 2.0 MGD(1) X 1.4 MGD

WTP84

MGD

DISTRIBUTION

Elwood I BPS(4) x 7.9 MGD(2) X 4.1 MGD(1) X 8.3 MGD

Elwood II BPS(2) x 7.6 MGD

Cortez BPS(3) X 3.8 MGD

Hospital BPS(2) x2.9 MGD

Northwest BPS(3) X 1.48 MGD

Elev. Storage(5) X 1.0MG(1) X 0.5 MG

Ground Storage(3) X 1.5 MG(2) X 1.0 MG

10 MG Gr. Stor 2

MANATEE COUNTY WATER SYSTEM

PUMP & STORAGE FACILITIES

4 High Service Pump Stations 115 Total MGD, 15 pumps

5 Booster Pump Stations 92 MGD, 17 pumps

Total Storage 34.7 MG 7 Ground Storage Tanks 26.5 MG 6 Elevated Storage Tanks 5.5 MG 3 Clearwells @ WTP 2.7 MG

4 major transmission mains from WTP 42, (2) 36, 30 188 miles > 16

1,201 miles water mains 2 14

18,378 isolation valves, 6,722 hydrants


INTERCONNECTS

Those which can provide limited water to MC Sarasota County 3 on University Parkway (Seminole RR (10),

Lockwood Ridge (30), Lakewood Ranch Blvd. (10))

City of Bradenton 11 (across all of City)

Town of Longboat Key 1 (Gulf Drive)

Those with no other water source City of Palmetto 9 (across N. & E. part of City)

Projected Demands

35

40

45

50

55

60

65

70

2015 2017 2019 2021 2023 2025 2027 2029 2031 2033 2035

Dri

nki

ng

Wat

er

Dem

and

an

d S

up

ply

(M

GD

)

Planning Period

2014 Water Demand and Supply Update

Current Supply

2024 MARS II Wells 3.0 MGD

Regional Option 5.0 MGD

2014Projected Demandwith 4.55% added conservation

010

20

30

40

50

60

70

0

10

20

30

40

50

60

70

Dri

nki

ng

Wat

er

De

man

d (

MG

D)

Dri

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Wat

er

Sup

ply

(M

GD

)

December 2014 Water Supply UpdateWater Supply Development Plan (Average Day Basis)

Lake Manatee MOSAIC EC WELLS Mars II Regional Supply DEMAND

Treatment Facilities in 2012 WSFWP

Planned major investments Projected Cost

Lake Manatee WTP Filtration Upgrade $45M

Biological Treatment Unit $23M

Dam R&R $23M

Buffalo Creek WF and WTP $36M

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- Planned Major Infrastructure Reinvestment $127M

MANATEE COUNTY WATER CONSERVATION

Education/Outreach Bill inserts, website Festivals/events, schools

Indoor Program 10,110 low flow toilet rebates

Outdoor Program 1866 irrigation system evaluations 624 rain sensors 4209 rain barrels 86 shallow well rebates

MANATEE COUNTY WATER CONSERVATION

50

100

150

200

19

77

19

82

19

87

19

92

19

97

20

02

20

07

20

12

GA

LLO

NS/

CA

PIT

A/D

AY

Per Capita Water Use

SWFWMD Compliance Level = 150 g/p/d

Per Capita was reduced from 200 g/p/d in 1977 to 91 g/p/d in 2014

FUTURE LOCAL SOURCES FOR

WATER SUPPLY (43-58 MGD)

Increased conservation efforts(5 MGD)

Western wells from GW credits(5 MGD)

East County Well Field from GW credits (8 MGD)

Manatee River Storage (10 MGD) Gilley Creek Reservoir

North and East Fork Reservoir

Dredging of Lake Manatee

Local Sources for Regional Development Flatford Swamp Upper Myakka Basin (10 MGD)

Desalination (5 - 20 MGD)

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GENERAL STATUS

Based on current population projections, supply will likely be good through 2034

Eventually new supplies will be needed and potential sources for development have been

identified

New supplies will have an increased cost

Need for continued investment in infrastructure

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FUTURE SUPPLY OPTIONS

Stretch current supply

Conservation

Use of reclaimed water

Use Ground Water Replacement Credits to increase supply

East County Well Field

New Brackish RO Facility North County (3-6 MGD)

Permitted through groundwater credits earned by use of reclaimed water instead of groundwater

Timing is key variable TBD in next two years

Local Sources for Possible Regional Development

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NEW SUPPLY OPTION ISSUES

Developing New Supplies so that there is Sufficient Quantities of Sufficient Quality Will

Increase Water Costs

Cheap water is no longer available

Stretching Current Supplies through Water Conservation and Reclaimed Offsets is Much

Cheaper than Developing New Supplies

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OPERATION / REGIONAL INTEGRATION

MC currently provides all of the water needed for MC customers (112,500 connections)

MC currently provides 6 MGD to Sarasota County

Scheduled to end by 2025

Most effective use of installed assets would continue contract at 4-5 MGD for foreseeable future

Latest projections show need for 5 MG from the PRMRWSA in 2034

PEACE RIVER MANASOTA REGIONAL

WATER SUPPLY AUTHORITY

An independent special district createdpursuant to Chapter 373 in 1982 by interlocalagreement between Charlotte, DeSoto,Hardee, Manatee and Sarasota Counties

Hardee withdrew in 1983

New interlocal agreement in 1984 betweenremaining four counties

Amended interlocal agreement in 1991(acquisition of PRMRWSA facility)

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PRMRWSA STATUTORY

PURPOSE & RESPONSIBILITY

Develop, recover, store and supply water forcounty or municipal purposes

Design, construct, operate and maintainfacilities in locations and at the times

necessary to ensure adequate water supply

will be available to all citizens within the

Authority

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CONTROLLING RULES /

DOCUMENTS

Chapter 373, 163 Florida Statutes

Chapter 40D, 62, FAC

Second Amended Interlocal Agreement- 2005 Simplified agreement by removal of obsolete

provisions, and transfer of other provisions to the Master Water Supply Contract

Master Water Supply Contract 2005 Regional Expansion Program

Amended twice (Second Amendment -2015)

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PRMRWSA Facility

CURRENT FACILITIES/LOCATIONS

Reservoirs 6.5 BG total storage

Plant

51 MGD treatment capacity

34.9 MGD permitted production

ASR 21 ASR Wells, 14.2 MGD

Transmission Lines 65 miles of 24-48

(6) 2MG GS tanks

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PRMRWSA Transmission Mains

ALLOCATIONS FROM 34.9 MGD

PRMRWSA FACILITY

Sarasota County 15.1 MGD

Charlotte County 16.1 MGD

City of North Port 2.8 MGD

DeSoto County 0.7 MGD

Manatee County 0.0 MGD

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FINANCIAL

Pay as you go

Debt based on allocation

3 different facility debt costs (1991, PRO, REP)

Various Pipeline debt costs who it serves

All pay same volumetric rate, but fixed charge is different based on allocation and debt

Volumetric rate is based only on power and chemicals, other costs are assigned to fixed (base) rates

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IDENTIFIED FUTURE SUPPLIES

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FUTURE

Manatee County existing supply sufficient for next 15-25 years

Increase supply through transfer of groundwater credits

Eventual supplies from the PRMRWSA

Have to develop new supply

What is best option

Have to figure out transmission cost component

What is cost recovery mechanism for transmission lines from source to Manatee County

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Questions?

Documents

Manatee County Water Presentation