Presentation on theme: "Treating Our Water…Right! Winnipegs Water Treatment Program."— Presentation transcript:
Treating Our Water…Right! Winnipegs Water Treatment Program
2 Agenda Introduction History of Winnipegs Water Supply Councils Decision to Treat Winnipegs 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
7 History The GWWD Railway was constructed between 1913 and 1915 Aqueduct construction was completed in March, 1919 – 2500 workers at peak Since 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
8 Councils 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 undertaken In 2000, Council adopted a recommendation that Winnipeg proceed with a water treatment program This decision was supported by public consultation, public health officials and the opinion of an expert panel (low risk – high consequence)
9 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
10 Specific 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
11 Waterborne Pathogens - Da 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
12 Our New Water Treatment Plant 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.
15 Plant Design Life and Capacity Water Treatment Plant Design Life projected to be 2040 Maximum Finished Water Production – 400 ML/d Average Finished Water Production – 254 ML/d Minimum Finished Water Production – 100 ML/d
17 Whats New at Deacon? Ultraviolet light disinfection New 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 Citys sewer system 24-hour monitoring and security
18 What We Have Done So Far Tested a number of water treatment technologies and found the combination that works best for Winnipegs water Completed Concept and Preliminary design for the water treatment plant Detailed Design is underway, concurrent with construction
19 Early 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
22 Need 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.  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
24 Settling 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.
25 Location of Settling Ponds New Water Treatment Plant 12 3 4
26 What are the Challenges? Environmental Issues Organizational Issues Market Conditions Schedule Finances Risk Management
27 Environmental Effects Assessment 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.
28 Organizational Issues This is a large complex project with four major consulting firms working from geographically diverse locations Coordination/communication through ERoom Construction Management and Fast Tracking leads to risks and cultural issues for City and Consultants Hiring and training of certified operators in time for commissioning and start-up (2008 by Council mandate) will be challenging
29 Market Conditions Many large new projects will be going to market over the scheduled construction period A period of high inflation within the construction industry is forecast (time = money) A shortage of qualified contractors and personnel is anticipated We must make this an attractive project for contractors
30 Schedule April 2005Finish preliminary design and environmental effects study Spring 2005Started building the water treatment plant Fall 2008Start testing the plant End of 2008Begin operating the plant
31 Construction 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
32 Finances The original water treatment program budget was $214 million to build the WTP and $12.75 million/yr to operate Council has approved an additional $13.3 million for risk mitigation initiatives and $2.8 million for shops/staff consolidation The current rate model will provide about of $117 Million in cash financing Once the plant is up and operating, revenues from water sales are sufficient to cover operating and debt servicing without extraordinary increases to water rates
33 Risk Management This project conforms to new civic policies on Risk Management A two-day Risk Management Workshop was undertaken, using a specialist consultant 120 risk items were identified by workshop attendees These 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