one water strategies - texas living waters project
TRANSCRIPT
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One Water StrategiesManaging Demand to Increase Sustainability and Resiliency
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New Braunfels Utilities
• Municipal Utility
• Water, Wastewater, Electric
• Fast growth corridor
• Growth’s Impact: Infrastructure, Facilities, Employees, Expectations
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Water Resource Plan
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One Water Approach
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Hallmarks of One Water
A mindset that all water has value
Focus on achieving multiple benefits
Systems Approach
Watershed-scale thinking and action
Right-sized solutions
Partnerships for progress
Inclusion and engagement for all
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One Water Strategies for NBU
• Reviewing systems and operations for opportunities.
• Sustainability and resilience are key management principles.
• Partner with leaders in the field for best practices and implementation
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Project partners
Deep dive into the Water Resource plan was conducted by a project team at Boston University’s Institute for Sustainable Energy, as part of a broad initiative on One Water opportunities in Texas funded by the Cynthia and George Mitchell Foundation
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NBU’s GPCD
New Braunfels (168)
0
50
100
150
200
250
300
Gallo
ns P
er C
apita
Per
Day
(2
009-
2014
)
Texas Cities GPCD
0
50
100
150
200
2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Gallo
ns P
er C
apita
Per
Day
New Braunfels GPCD from 2010 - 2018
GPCD
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Future demand projection
• Recent water demand growth has been approximately 4% per annum even as the population increases at 6% per annum.
• Modifying the demand projections accordingly indicate that NBU has adequate supplies for over a decade.
0
50000
100000
150000
200000
250000
0
5000
10000
15000
20000
25000
30000
35000
2009 2011 2013 2015 2017 2019 2021 2023 2025 2027 2029 2031 2033 2035 2037 2039 2041
Popu
latio
n
Acre
Fee
t (P
er Y
ear)
New Braunfels Water Supply & Demand with DOR Supply Thresholds and Population
Actual Usage Actual Pumped Firm Yield DOR
Median Yield DOR Average Year Supply Max Year Supply
Projected Demand Population
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Demand management opportunities
• Often One Water discussions focus on the supply side, yet demand management and water conservation also play a role
• Consideration of residential versus non-residential demand• Informs modified demand projections
• Consideration of distribution of demand across accounts• Ordinance modifications• Outreach to high-consumption users• Reviewing Rebates
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Residential versus non-residential consumption
• Although non-residential accounts are very small in number, they are significant in overall consumption
• Therefore the assumption that water demand would increase in proportion with the population increase is not necessarily valid
Usage By Source, All Accounts
Commercial General
Commercial Irrigation
Other
Public General
Public Irrigation
Residential General
Residential Irrigation
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Distribution of consumption by account
• The top 0.1% of accounts constitute 10% of total water demand and the top 1% of accounts constitute 27% of total water demand 0
100,000,000200,000,000300,000,000400,000,000500,000,000600,000,000700,000,000800,000,000900,000,000
9090
.691
.291
.892
.4 9393
.694
.294
.895
.4 9696
.697
.297
.898
.4 9999
.6
Gallo
ns o
f Wat
er C
onsu
med
(FY
2017
-FY
2019
)
Water Consumption Percentile
Water Usage by Percentile (Top 10%)
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Outreach to high consumers
• Identify high-percentile accounts
• Determine the end-uses of water
• Identify one-time change options
• Create and implement an action plan
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Ordinances
• Review and assess how fines are assessed by volume.
• Determine cap for scaled fines by customer type.
• Create fine structures created by customer groups.
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Current Internal Adjustments
• State of the Art Leak Detection program
• Wastewater management systems review
• Meter Replacement Program
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Future Internal Adjustments
• Neutral Output Discharge Elimination System
• E-Pulse
• WaterSmart Customer Service Portal
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Headwaters at the Comal
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Phase I focus on:• Restoration:
• Remove asphalt • Debris removal• Invasive species removal• biodiversity planting and seeding• Creation of habitat pools and ripples
• Storm Water Mitigation:• Check dams• Creating Berms & Bioswales• Bank Stabilization
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Phase II Buildings
• Comal Springs Environmental Education Center• Event & Meeting Space• Demonstration gardens• Smart building applications
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Phase II additional features• Rainwater harvesting • Black water reuse system • Permeable walkways and parking areas• Smart building applications• Low impact development – reuse of materials
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