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Texas Water Reuse Government Accountability Office Municipal Water Technology Workshop January 29, 2015 Erika Mancha

Texas Water Reuse...Jan 29, 2015  · The following presentation is based upon ... • ~1.5 million acre‐feet of reuse water in 2060 • Reuse as water management strategy – 13

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Page 1: Texas Water Reuse...Jan 29, 2015  · The following presentation is based upon ... • ~1.5 million acre‐feet of reuse water in 2060 • Reuse as water management strategy – 13

Texas Water ReuseGovernment Accountability Office 

Municipal Water Technology WorkshopJanuary 29, 2015

Erika Mancha

Page 2: Texas Water Reuse...Jan 29, 2015  · The following presentation is based upon ... • ~1.5 million acre‐feet of reuse water in 2060 • Reuse as water management strategy – 13

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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Page 3: Texas Water Reuse...Jan 29, 2015  · The following presentation is based upon ... • ~1.5 million acre‐feet of reuse water in 2060 • Reuse as water management strategy – 13

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

Page 4: Texas Water Reuse...Jan 29, 2015  · The following presentation is based upon ... • ~1.5 million acre‐feet of reuse water in 2060 • Reuse as water management strategy – 13

Regional Water Planning Areas

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Page 5: Texas Water Reuse...Jan 29, 2015  · The following presentation is based upon ... • ~1.5 million acre‐feet of reuse water in 2060 • Reuse as water management strategy – 13

Projected Existing Water Supplies by 2060

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Volume (acre‐feet per year)

2012 State Water Plan

Page 6: Texas Water Reuse...Jan 29, 2015  · The following presentation is based upon ... • ~1.5 million acre‐feet of reuse water in 2060 • Reuse as water management strategy – 13

Recommended Water Management Strategies by 2060

2012 State Water Plan

~915,000 acre‐feet per year

Page 7: Texas Water Reuse...Jan 29, 2015  · The following presentation is based upon ... • ~1.5 million acre‐feet of reuse water in 2060 • Reuse as water management strategy – 13

• ~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

Page 8: Texas Water Reuse...Jan 29, 2015  · The following presentation is based upon ... • ~1.5 million acre‐feet of reuse water in 2060 • Reuse as water management strategy – 13

Capital Costs

$5.15 Billion for ReuseWater Management Strategies 

2012 State Water Plan

Page 9: Texas Water Reuse...Jan 29, 2015  · The following presentation is based upon ... • ~1.5 million acre‐feet of reuse water in 2060 • Reuse as water management strategy – 13

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

Page 10: Texas Water Reuse...Jan 29, 2015  · The following presentation is based upon ... • ~1.5 million acre‐feet of reuse water in 2060 • Reuse as water management strategy – 13

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

Page 11: Texas Water Reuse...Jan 29, 2015  · The following presentation is based upon ... • ~1.5 million acre‐feet of reuse water in 2060 • Reuse as water management strategy – 13

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

Page 12: Texas Water Reuse...Jan 29, 2015  · The following presentation is based upon ... • ~1.5 million acre‐feet of reuse water in 2060 • Reuse as water management strategy – 13

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

Page 13: Texas Water Reuse...Jan 29, 2015  · The following presentation is based upon ... • ~1.5 million acre‐feet of reuse water in 2060 • Reuse as water management strategy – 13

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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Page 14: Texas Water Reuse...Jan 29, 2015  · The following presentation is based upon ... • ~1.5 million acre‐feet of reuse water in 2060 • Reuse as water management strategy – 13

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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Page 15: Texas Water Reuse...Jan 29, 2015  · The following presentation is based upon ... • ~1.5 million acre‐feet of reuse water in 2060 • Reuse as water management strategy – 13

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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