TACOMA WATER RESILIENCY
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TACOMA WATER RESILIENCY Providing Clean, Reliable Water Now And In The Future.
description
TACOMA WATER RESILIENCY. Providing Clean, Reliable Water Now And In The Future. Built-in Resiliency. Resiliency in Sources and System Reliable, high-performing system Protected watershed Redundant pipelines feeding City by gravity - PowerPoint PPT Presentation
Transcript of TACOMA WATER RESILIENCY
TACOMA WATER RESILIENCY
Providing Clean, Reliable Water Now And In The Future.
Built-in Resiliency
RESILIENCY IN SOURCES AND SYSTEM• Reliable, high-performing system• Protected watershed• Redundant pipelines feeding City by gravity• Large groundwater source with actively managed groundwater protection• Extensive interties with other utilities
Tacoma Water’s Supply System
Source Resiliency
• Surplus capacity• First and Second Diversion Water Rights, North Fork Wells• In-town groundwater sources
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HISTORICAL FORECAST
Mill
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of g
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ns p
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day
Climate Change Resiliency
Infrastructure Resiliency
• Large, redundant storage reservoirs
• High quality, long lasting materials for water mains
• Looped distribution mains (where possible)
• Buried, welded steel pump stations
• Substantial portable power generation capacity
Business Resiliency
Strategic Asset Management PlansASSET MANAGEMENT• 18 Strategic Asset Categories• Using new maintenance strategies to focus
work on critical, risk prone assets.• Starting a Strategic Maintenance
Management Program.• Conducting Business Case Evaluations to
determine which assets to rehabilitate (and when).• Reliability Centered Maintenance for some
highly critical assets
Work Force Changes
Past performance is not a predictor of future resultsForecasted and Actual Demands (1954-2060)
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1954 1964 1974 1984 1994 2004 2014 2024 2034 2044 2054
Mill
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Gallo
ns p
er D
ay, A
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ay D
eman
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Actual Historical Demand with Losses 1985 Water Demand Forecast (EES) 1991 Water Demand Forecast (TPU)
1993 Water Demand Forecast (EES) 1995 Water Demand Forecast (EES and CH2MHill) - HIGH 1995 Water Demand Forecast (EES and CH2MHill) - LOW
1999 Water Demand Forecast (October 1999) (RW Beck) HIGH 1999 Water Demand Forecast (October 1999) (RW Beck) LOW 2003 Demand Forecast Draft Report (August 2003) (IUG) EXPECTED
2009 Demand Forecast (Fiske) EXPECTED 2012 Demand Forecast (Fiske) MEDIUM 2012 Demand Forecast (Fiske) LOW
Resiliency - Next Steps
