Treating Our Water…Right!Treating Our Water…Right!Winnipeg’sWinnipeg’s

Water Treatment ProgramWater Treatment Program

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AgendaAgenda

Introduction History of Winnipeg’s Water Supply Council’s Decision to Treat Winnipeg’s Water Why treat our water? What have we done so far? What will the new water treatment plant be

like? What challenges remain?

Environmental Issues Organizational Issues Market Conditions Schedule Finances Risk Management

Questions

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HistoryHistory

Red River

MainAqueduct

McPhillips Reservoirand Pumping Station

Wilkes Reservoir andHurst Pumping Station

MacLean Reservoir and Pumping Station

TacheBoosterStation

Branch II

Deacon Reservoirand Booster Station

Winnipeg

Deacon Reservoir

SHOAL LAKE(Indian Bay)

Falcon Lake

Winnipeg River

MANITOBA

ONTARIO

MINNESOTA

Kenora

Ross

Pinawa

AssiniboineRiver

Main Aqueduct

Intake

exsys2bw0512_cgs

Natalie Lake

Shoal LakeWatershedBoundary

Existing Water Supply SystemFigure 3-1

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HistoryHistory

0 10 20 30 40 50 60 70 80 90 100

DISTANCE (STATION) IN MILES

700

800

900

1000

1100

Ele

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on A

bov

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ea L

evel

in F

eet

700

800

900

1000

1100

RE

D R

IVE

RS

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IVE

R BR

OK

EN

HE

AD

RIV

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WH

ITE

MO

UTH

RIV

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BIR

CH

RIV

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BO

GG

Y R

IVE

R

BO

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Y R

IVE

R

IND

IAN

BAY

SH

OA

L LA

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INVERT OF AQUEDUCT

GROUNDLINE

WINNIPEG

SHOALLAKE

FALC

ON

RIV

ER

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HistoryHistory

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HistoryHistory

Dugald

Trans Canada Highway

WINNIPEG

1

City Limits

15R

edR

iver

Assiniboine River

100

Perimeter Highway

Perimeter H

ighway

207

Red Rive

r Floodway

206

101

Shoal Lake Aqueduct

Branch II

Branch IMacLean

Res.Wilkes Res.

McPhillips Res.

Shoal Lake96 km to

Cell 1

Cell 4Cell 3

(1919)

(1972)Cell 2

(1978)

(1997)

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HistoryHistory

The GWWD Railway was constructed between 1913 and 1915Aqueduct construction was completed in March, 1919 – 2500 workers at peakSince 1919, Winnipeg has enjoyed a high quality reliable water supply from Shoal Lake- minimal treatment (chlorine for disinfection prior to 1937, and fluoride for dental protection since 1956)Recently, fluoride was relocated to Deacon, and orthophosphate was added for lead control

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Council’s DecisionCouncil’s Decision

In 1993 Council - Accepted the recommendation to undertake water treatment within a ten year time frame - And established a Water Treatment Reserve

Between 1995 and 1999 a comprehensive program of monitoring, pilot testing and engineering studies was undertakenIn 2000, Council adopted a recommendation that Winnipeg proceed with a water treatment programThis decision was supported by public consultation, public health officials and the opinion of an “expert panel” (low risk – high consequence)

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Why Treat Our Water?Why Treat Our Water?

Water treatment is about protecting Public Health

“The rationale for construction of a water treatment plant is based primarily on health concerns” …. Dr. Margaret Fast

“Providing water that is safe and healthy to drink” received the highest priority …. March 1999 Customer Survey

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Specific ObjectivesSpecific Objectives

Reduce the risk of a waterborne disease outbreak caused by chlorine-resistant microorganisms

Reduce chlorine disinfection by-products

Meet the Canadian Drinking Water Quality Guidelines

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Waterborne Pathogens - “Da Waterborne Pathogens - “Da Bugs…”Bugs…”

Chlorine is effective against bacteria and viruses

Chlorine is relatively ineffective against Giardia and requires high doses and long contact times

Chlorine is not effective against Cryptosporiduim

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Our New Water Treatment Our New Water Treatment PlantPlant

A new Water Treatment Plant is being built at the Deacon Reservoir Site.The plant will be a state-of-the-art, modern facility designed for performance, safety, and environmental sustainability.

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AERIAL VIEW FROM SOUTH WESTAERIAL VIEW FROM SOUTH WEST

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VIEW FROM SOUTH EASTVIEW FROM SOUTH EAST

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Plant Design Life and CapacityPlant Design Life and Capacity

Water Treatment Plant Design Life projected to be 2040Maximum Finished Water Production – 400 ML/dAverage Finished Water Production – 254 ML/dMinimum Finished Water Production – 100 ML/d

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Location of the Water Treatment Location of the Water Treatment PlantPlant

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What’s New at Deacon?What’s New at Deacon?

Ultraviolet light disinfectionNew treatment facility, clearwell and ancillary buildings (Stand-by power, chemical storage and on-site sodium hypochlorite generation)Settling ponds and a new pipe to transport wastewater from the plant to the City’s sewer system24-hour monitoring and security

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What We Have Done So FarWhat We Have Done So Far

Tested a number of water treatment technologies and found the combination that works best for Winnipeg’s water

Completed Concept and Preliminary design for the water treatment plant

Detailed Design is underway, concurrent with construction

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Early Ultraviolet Light DisinfectionEarly Ultraviolet Light Disinfection

The water will pass through large pipes containing ultraviolet lamps.

The ultraviolet light will make water- borne parasites, such as Cryptosporidium, harmless

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Ultraviolet Light DisinfectionUltraviolet Light Disinfection

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Ultraviolet Light DisinfectionUltraviolet Light Disinfection

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Need for Multiple BarriersNeed for Multiple Barriers

“What the experts and the industry recommend with respect to the treatment of all surface water is a multi-barrier approach. The first barrier is watershed protection to ensure the best possible raw water source. The next barrier is optimization of the plant processes designed to achieve settlement of particulates and sediment in the raw water. The third barrier is maximization of the efficiency and monitoring of the filtration process which follows sedimentation. The final barrier is to ensure the water is adequately disinfected.”[1]

[1] Justice Robert D. Laing, Commissioner, Report of the Commission of the Inquiry into matters relating to the safety of the public drinking water in the City of North Battleford, Saskatchewan. March 28, 2002

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The Water Treatment ProcessThe Water Treatment Process

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Settling PondsSettling Ponds

Algae and other solid material will be removed from the water and put in the ponds.The water will be separated from the solid material.The solids will be removed from the ponds every year and hauled to Brady Road Landfill.We do not expect any odour from the ponds.

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Location of Settling PondsLocation of Settling Ponds

New Water Treatment Plant

1 2

3 4

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What are the Challenges?What are the Challenges?

Environmental Issues Organizational Issues Market Conditions Schedule Finances Risk Management

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Environmental Effects Environmental Effects AssessmentAssessment

An Environmental Effects Assessment study of the effects the water treatment plant on the environment and surrounding community identified no adverse effects.The study was voluntary – it is not required by our regulators.The results were shared with stakeholders and Manitoba Conservation.The facility will be a zero discharge operation - it will not discharge to the environment.Two Public Open Houses have been held in Springfield;All substantive issues have been addressed.

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Organizational IssuesOrganizational Issues

This is a large complex project with four major consulting firms working from geographically diverse locationsCoordination/communication through “ERoom”Construction Management and “Fast Tracking” leads to risks and cultural issues for City and ConsultantsHiring and training of certified operators in time for commissioning and start-up (2008 by Council mandate) will be challenging

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Market ConditionsMarket Conditions

Many large new projects will be going to market over the scheduled construction periodA period of high inflation within the construction industry is forecast (time = money)A shortage of qualified contractors and personnel is anticipatedWe must make this an attractive project for contractors

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ScheduleSchedule

April 2005 Finish preliminary designand environmental

effectsstudy

Spring 2005 Started building the water treatment plant

Fall 2008 Start testing the plant

End of 2008 Begin operating the plant

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Construction ActivitiesConstruction Activities

Progress to date:

• Long Delivery Valves and process equipment have been prepurchased

• Some piling has been prepurchased• Bulk Excavation for the WTP and the Clearwell has been completed• Construction of Yard piping, Clearwell and Raw Water Pumping

Station are underway.• About $40 Million in work awarded• Overall, we have committed about $78 Million to date

Upcoming Work:

• WTP Concrete and Piling (Construction) - $55.9M• Freeze Thaw Ponds and related infrastructure - $6.9M• Mechanical and Electrical - $38.5 Million• Miscellaneous equipment, piping and infrastructure - $10

M

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FinancesFinances

The original water treatment program budget was $214 million to build the WTP and $12.75 million/yr to operateCouncil has approved an additional $13.3 million for risk mitigation initiatives and $2.8 million for shops/staff consolidationThe current rate model will provide about of $117 Million in cash financingOnce the plant is up and operating, revenues from water sales are sufficient to cover operating and debt servicing without extraordinary increases to water rates

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Risk ManagementRisk Management

This project conforms to new civic policies on Risk ManagementA two-day Risk Management Workshop was undertaken, using a specialist consultant120 risk items were identified by workshop attendeesThese were synthesized into 44 project issues and 33 design issues by the Risk Consultant. Some of the risks are “Serious” to “Critical”Further refinement; mitigation and monitoring protocols have been developed; risks are monitored on an ongoing basis and reviewed at monthly meetings

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Questions?Questions?