texas water reuse...jan 29, 2015 · the following presentation is based upon ... • ~1.5 million...
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Texas Water ReuseGovernment Accountability Office
Municipal Water Technology WorkshopJanuary 29, 2015
Erika Mancha
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The following presentation is based upon professional research and analysis within the scope of the Texas Water Development Board’s statutory responsibilities and priorities but, unless specifically noted, does not necessarily reflect official Board positions or decisions.
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MissionTo provide • Leadership, • Information, • Education, and • Support for planning,
financial assistance, and outreach
for the conservation and responsible development of water for Texas.
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Texas Water Development
Board
Water Science &
Conservation
Water Supply &
Infrastructure
Operations & Administration
Finance
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Regional Water Planning Areas
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Projected Existing Water Supplies by 2060
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Volume (acre‐feet per year)
2012 State Water Plan
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Recommended Water Management Strategies by 2060
2012 State Water Plan
~915,000 acre‐feet per year
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• ~1.5 million acre‐feet of reuse water in 2060• Reuse as water management strategy
– 13 regional water planning groups (except A, J, and P)
• Recommended water management strategy– 12 regional water planning groups (except A,D, J, and P)
• Alternative water management strategy– 4 regional water planning groups (includes B,C,D, F)
Reuse ‐ Recommended Water Management Strategy
72012 State Water Plan
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Capital Costs
$5.15 Billion for ReuseWater Management Strategies
2012 State Water Plan
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2012 Water Usage in Texas
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2.0 % Reused~319,000 acre‐feet
16,012,545 acre‐feetTotal Water Use
4,470,999 acre‐feet Municipal Water Use
5.8 % is Reused~261,451 acre‐feet
2012 Water Use Survey
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Reuse in Texas
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0
20,000
40,000
60,000
80,000
100,000
120,000
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
Volume (M
illion Gallons)
Year2013 Water Use Survey
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Direct Potable Water ReuseExisting and Proposed Facilities
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• Raw Water Production Facility– Operating since May 2013
• Direct Potable Reuse Project– Operating since July 2014
(emergency project)
• Advanced Purified Water Treatment – Completed piloting protocol
• Direct potable reuse project– Awaiting city council approval
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Water Reuse Research
• Contaminants of Concern• Water quality performance targets• Water quality characterization• Source control • Treatment technologies• Environmental buffers• Quantitative relative risk assessment• Pilot protocols• Regulatory summary• Public awareness and outreach
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Evaluating the Potential for Direct Potable Reuse
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Testing Water Quality in a Municipal Wastewater Effluent Treated to Drinking Water Standards
Quarterly sampling Chemicals of Emerging Concern
Microbial pathogens
Develop correlations for surrogates compounds
Guidance document for monitoring at direct potable reuse facilities
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Brazos River Demonstration Wetland• Engineered wetland constructed in Waco, Texas to evaluate how endocrine disrupting compounds can be reduced from treated wastewater effluent.
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Erika [email protected]
Innovative Water Technologieshttp://www.twdb.texas.gov/innovativewater/reuse/index.asp
Texas Water Development Boardwww.twdb.texas.gov
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