Transcript PPT Presentation

Colorado River Basin Water Supply and
Demand Study: Moving Forward
Municipal and Industrial Water
Conservation and Reuse
Workgroup
Marc Waage, Manager of Water Resources Planning, Denver Water
Colorado River Water Users Association Conference December 11, 2014
Workgroup
Co-chairs
– Kathleen Ferris, Arizona Municipal Water Users Association
– Jack Safely, The Metropolitan Water District of Southern California
– Marc Waage, Denver Water
Lead Consultant: Armin Munévar, CH2M Hill
Workgroup participants:
John Stomp, Albuquerque-Bernalillo County W.U.A.
Jenny Hoffner, American Rivers
Carol Ward-Morris, Arizona Municipal Water
Users Association (alt chair)
Robert Lotts, Arizona Public Service
Scott Miller, Arizona Public Service
Ken Nowak, Bureau of Reclamation
Paula Silva, CH2M HILL (contractor team)
Brian Skeens, CH2M HILL (contractor team)
Clint Bassett, Cheyenne Board of Public Utilities
Brad Hill, City of Flagstaff
Rick Carpenter, City of Santa Fe
Angela Rashid, Colorado River Board of California
John Currier, Colorado River Water Conservation District
Scott Winter, Colorado Springs Utilities
Kevin Reidy, Colorado Water Conservation Board
Elizabeth Lovsted, Eastern Municipal Water District
Rich Atwater, Environmental Defense Fund
Ben Bracken, Green River-Rock Springs-Sweetwater
County Joint Powers Water Board
Bart Forsyth, Jordan Valley Water Conservancy District
Penny Falcon, Los Angeles Department of Water & Power
John Longworth, New Mexico Office of the State Engineer
Mike Greene, Public Service Company of New Mexico
Dan Denhan, San Diego County Water Authority
Thomas Maher, Southern Nevada Water Authority
Erin Young, City of Flagstaff
Michael Cohen, Independent Consultant
Tasks
1
Quantify water savings to date
2
Highlight successful, innovative water
savings programs
3
Compile projected future savings
4
Evaluate the impact of savings on Colorado
River use
5
Identify future opportunities and challenges
Metropolitan
Areas Receiving
Metropolitan
Colorado River
Receiving
Water
Areas
Colorado River
Water
1) Savings
Municipal use
• Per capita use decreased by 12 percent to 38 percent since 1990
• Uses ranges from 153 GPCD to 314 GPCD.
• At least 1.7 MAFY saved as compared to 1990 per capita levels
Municipal and industrial reuse
• 700 KAFY reuse in 2012.
• A significant portion of treated wastewater flows are used for nonmunicipals uses including groundwater recharge, agricultural uses,
and wetland habitats.
• In some metropolitan areas, greater than 90 percent of the reusable
supply is currently being reused
Accounting for both changes in per capita use and water reuse, M&I water
use could have been nearly 2.4 MAFY higher in 2010.
2) Innovative Conservation and Reuse
Programs
Over 400 conservation and reuse programs reviewed
Selected 34 programs as case studies
Categories
•
•
•
•
•
•
•
Metering and billing
Public education
System water loss characterization and reduction
Residential indoor water conservation
Commercial, industrial, and institutional conservation
Outdoor landscaping water conservation
Reuse
3) Projected Additional Savings by 2030
• Conservation: 700 KAFY*
• Reuse: 400 KAFY
* for the water providers for which numeric targets were identified
compared to 2010 per capita water use rates
4) Impact of savings on Colorado River use
Municipal providers in the metropolitan areas receiving
CR water manage their water supplies conjunctively
and many must use surface water supplies first to
protect groundwater or prevent groundwater mining and
its consequences. Additional M&I conservation and
reuse has the potential to reduce the amount of future
development of CR water. However, in many regions,
conservation and reuse may not result in substantial
reductions in diversions of CR water because
conservation is typically used to either meet future
growth or offset/delay the need for future water
supplies. Municipal water providers are planning to use
their full entitlements to CR water.
5) Categories of Potential Opportunities
1. Outdoor use
2. Social norming with water customers
3. Integration of water/energy conservation
programs
4. Integration of land and water use planning
5. Goal setting for conservation and reuse programs
6. Funding and resources for conservation programs
7. Water system losses
8. Partnerships with commercial, institutional and
industrial users
9. Conservation oriented water rates and incentive
programs
10. Regulations and ordinances
The End
Use Trends: Front Range and Wasatch
2,500,000
1,000,000
500,000
2012
2010
2008
2006
2004
2002
2000
1998
1996
1994
224 (-15%)
100
50
2012
2010
2008
2006
2004
2002
2000
1998
1996
1994
1992
0
1990
2012
2010
2008
2006
2004
2002
2000
1998
1996
1994
1992
1990
1988
0
1986
0
150
1988
200,000
2010 Mean
262
1986
50,000
2000 Mean
200
1984
400,000
1990 Mean
250
1982
100,000
Actual
1980
600,000
Per Capita Water Use (GPCD)
150,000
1984
1980
2012
2010
2008
2006
2004
2002
2000
1998
1996
1994
1992
1990
1988
1986
1984
1982
800,000
1982
300
1,000,000
200,000
1980
Water Delivery (Acre Feet)
1,200,000
Population Served
Total Annual Water Production
250,000
50
Wasatch Front
Wasatch Front
300,000
178 (-22%,-18%)
100
0
0
1980
0
218 (-4%)
1990
100,000
2010 Mean
150
1988
200,000
227
1986
1,500,000
300,000
2000 Mean
200
1984
400,000
Population
2,000,000
1990 Mean
250
1982
500,000
Per Capita Water Use (GPCD)
Actual
Population
Water Delivery (Acre Feet)
Population Served
Total Annual Water Production
600,000
Front Range
300
3,000,000
1992
Front Range
700,000
Use Trends: Middle Rio Grande and
Southern Nevada
Middle Rio Grande
Middle Rio Grande
800,000
700,000
2,500,000
2012
2010
2008
2006
400
2,000,000
400,000
1,500,000
300,000
1,000,000
200,000
500,000
100,000
Per Capita Water Use (GPCD)
Population Served
Total Annual Water Production
500,000
1980
2012
2010
2008
2006
2002
2000
1998
1996
1994
1992
1990
1988
1986
1984
1982
2004
Southern Nevada
Southern Nevada
600,000
Actual
350
300
1990 Mean
2000 Mean
2010 Mean
338
309 (-9%)
250
200
228 (-33%,-26%)
150
100
50
2012
2010
2008
2006
2004
2002
2000
1998
1996
1994
1992
1990
1988
1986
1984
1982
0
1980
2012
2010
2008
2006
2004
2002
2000
1998
1996
1994
1992
1990
1988
1986
1984
0
1982
0
1980
Water Delivery (Acre Feet)
0
0
1980
0
50
2004
100,000
2002
20,000
2000
200,000
1998
40,000
152 (-37%,-24%)
100
1996
300,000
201 (-17%)
1994
60,000
2010 Mean
150
1992
400,000
2000 Mean
243
1990
80,000
200
1988
500,000
1986
100,000
1990 Mean
250
1984
600,000
Actual
1982
120,000
Population
140,000
300
Per Capita Water Use (GPCD)
Population Served
Total Annual Water Production
Population
Water Delivery (Acre Feet)
160,000
Use Trends: Central Arizona and Coastal
Southern California
228 (0.4%)
100
50
2012
2010
2008
2006
2004
2002
2000
1998
1996
1994
0
1990
2012
2010
2008
2006
2004
2002
2000
1998
1996
1994
1992
1990
1988
1986
0
1984
0
2010 Mean
195 (-14%,-15%)
1988
1,000,000
2000 Mean
150
1986
200,000
227
1984
2,000,000
200
1982
400,000
1990 Mean
250
1980
3,000,000
Population
600,000
Per Capita Water Use (GPCD)
Actual
4,000,000
1982
300
5,000,000
800,000
1980
Water Delivery (Acre Feet)
Population Served
Total Annual Water Production
1,000,000
Central Arizona
6,000,000
1992
Central Arizona
1,200,000
Use Trends: Salton Sea Basin
Salton Sea Basin
Salton Sea Basin
600,000
Population Served
Total Annual Water Production
Actual
500
500,000
160,000
140,000
120,000
100,000
300,000
80,000
200,000
60,000
40,000
100,000
Population
400,000
Per Capita Water Use (GPCD)
180,000
1990 Mean
2000 Mean
2010 Mean
400
414 (12%)
370
300
314 (-15%,-24%)
200
100
20,000
2012
2010
2008
2006
2004
2002
2000
1998
1996
1994
1992
1990
1988
1986
1984
1982
0
1980
2012
2010
2008
2006
2004
2002
2000
1998
1996
1994
1992
1990
1988
1986
1984
0
1982
0
1980
Water Delivery (Acre Feet)
200,000
Metropolitan Areas
Receiving
Colorado River
Water