Cool Water - Preventing Water Crises in Central Texas
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Transcript of Cool Water - Preventing Water Crises in Central Texas
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Cool Water:Blue Is The New Green
JERRY YUDELSON • YUDELSON ASSOCIATES • TUCSON, ARIZONA
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Learning Objectives
Learn about water scarcity issues in Central Texas region, water conservation strategies for buildings, factories, cities and homes
Understand how to incorporate water conservation concerns into design process such as rainwater harvesting
Review successful approaches to water conservation in Central Texas through local case studies
Be able to articulate options for new water re-use and supply technologies, including water efficient technology, retrofits and existing buildings.
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Key Take-Aways
Water is the next big (green) thing
International experience and technology can be adapted here
Major new opportunities: owners, designers, facility managers, entrepreneurs and contractors
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Why Water?
Water: 21st Century oil
Freshwater supply limited
Population/urban growth: large water footprint
Global warming hits water
Major droughts since 2006
Water efficiency leads to conservation outcomes
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Water Is the Oil of the 21st Century
Resource conflicts
Existing water sources fully allocated
Next urban/rural battleground
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Water is the Oil of the 21st Century
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Freshwater is inherently limited
No more water since Adam & Eve
Usable freshwater a tiny fraction
Much is too polluted to drink
Aquifer depletion reduces water supply
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Freshwater
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Water Footprint
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Global Warming
Much of world’s summer water supply from snowmelt
Changes in climate = smaller snowpack, larger spring runoff, greater flooding, reduced summer stream flows
Water pricing for conservation will be huge issue
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Water Conservation vs. Water Efficiency
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Water/Energy Nexus
Hydropower still important
Water supply <=> energy use
Energy supply <=> water use
By 2020s: Not enough water for energy, or energy for water!
Lake Lanier, Atlanta, GA
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Major Droughts Since 2006
In the U.S.
Atlanta
South Texas (Austin/San Antonio)
California
Murray-Darling, Australia’s Largest River
In Australia
Every major city
• Murray-Darling basin
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Water Conservation vs. Water Efficiency
Conservation means less total use
But efficiency does not guarantee conservation
Behavioral change is equally important
Water conservation: some unintended consequences
San Francisco: $14 million for bleach
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Australia
20 million people
Most live near the coasts
Except for tropics, country is quite dry
Global warming has moved storm tracks south
Biggest drought in 117-year recorded history since 2005
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Australia
Coordinated response by national/state governments
$13 billion plan ($650 per person)
Water restrictions in all urban areas
Product innovations
WELS rating mandatory for products since
2006
Product innovations come out of labeling
Rainforest in Tasmania, Australia
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Australia
Plumbing industry front and center
Large water utilities recycle water, even for domestic use
Public cooperation vital
Desalination - viable option
Falcon water-free urinals
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Australia: Lessons Learned
In a crisis, everything’s on the table
Easier to do big things politically
System favors (big) long-term solutions
Don’t neglect public participation
New technology can be mandated in crisis
Exotic solutions can be tried and evaluated
Murray-Darling — Australia’s Largest River
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Germany
80 million people
Leader in adapting to global warming
Focus on rainwater harvesting codes
New technologies emerging for gray water reuse
Top: Heidelberg, GermanyBottom: Water House, Pforzheim,
Germany
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Pontos AquaCycle Gray Water System
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Driving Forces
Water shortages/droughts in many states
Financial/regulatory incentive programs
Green certification programs such as LEED
Rising costs for water supply and sewage treatment
Stakeholder concerns; political and regulatory changes
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Inhibiting Forces
Water is still cheap in most areas
High-water-use lifestyles still preferred
Unintended consequences
Agency revenues drop
Sewers and drain lines don’t flush
Codes hard to change
Lack of whole systems thinking
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Where Does This Leave Us?
A very dynamic future: much opportunity
New technologies, systems, approaches
New products coming to market constantly
Larger questions?
What about water for the environment?
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Some Opportunities?
“Green plumbing” jobs
Building fixture retrofits
NEWater reuse/recycling systems
New specialties
Whole systems engineer
Using less-than-potable sources
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The Future is Green (and Blue), But…
If we want to score, we run to where the ball is headed, not to where it is.
Ask yourself: how green (and blue) will the built environment be in 2015? What will be the Next Normal?
How can I participate in the water revolution?
Spain Wins FIFA World Cup 2010
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Water: Dry Run
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Thank you!
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