Inland Empire Utilities Agency (IEUA) Recycled Water Program Martha Davis, IEUA

Inland Empire Utilities Agency (IEUA)
Recycled Water Program
Martha Davis, IEUA
March 4, 2009
State Water Board, California Public Utilities Commission and
the Water Energy Climate Action Team
Climate Change Scoping Plan Implementation Workshop
Measure W-2 Water Recycling
Inland Empire Utilities Agency (IEUA)
IEUA Profile
“Wholesale” Water and Wastewater Utility in Southern California serving
242 square miles of the Chino Basin in the western portion of San
Bernardino County (308 employees)
Regional wastewater service provider and distributor of wholesale
water and recycled water
Chino Groundwater Basin (one of the largest in So. Calif.)
3 Products: Recycled Water, Compost and Renewable Energy
Member of Metropolitan Water District of Southern California
High urban growth – Inland Empire one of the most rapidly
growing regions in the U.S.
Conversion of agricultural lands to urban use will increase municipal and
industrial demands for water
Tidal Wave of Water Challenges
Increasing
costs
Flooding
Economic
Recession
GHG
reductions
through water
management
Budget
Crisis
Less Snow –
More Rain
Climate
change
Rising
Energy
Costs
Delta
Pumping
Restrictions
20x2020
DWR/SWRCB
Green
Building
Codes
AB
32
No Delta
Fix
Drought
Water
Bond?
Decreased
water
reliability
Water
quality
regulations
Water Agencies Are in a Pivotal Position to
Implement GHG Mitigation Strategies
At 19% of California’s
total electricity demand
and 32% of natural gas
usage, provision of water
and wastewater services is
energy intensive!!!
A large amount of energy
is embedded in water
supplies (amount varies by
location of water source
and end use)
Local Distribution
9%
Groundwater Supply
6%
Waste Treatment
14%
Imported Water Supply
71%
Southern California
Energy Use Comparison
Based on the “energy intensity” of the water supplies
used within IEUA’s service area, the amount of
energy needed to provide water to meet our area’s
needs today is about 347,000 MWh
Energy Use by Source
4,400
4,500
4,000
3,200
3,500
3,000
KWH/AF
2,500
2,500
2,000
2,000
1,700
1,500
1,050
950
1,000
400
500
Recycling
Groundwater
Pumping
Ion Exchange
Chino
Desalter
Colorado
River
Aqueduct
West Branch
State Project
Water
East Branch
State Project
Water
Ocean
Desalter
2000 Profound Shift in
Chino Basin Water Supply Strategy
Meet future water needs
through increased local water
development, minimize need
for imported water
Recycled Water
Enhanced Groundwater
Recharge
Desalters
Dry Year Yield/Conjunctive
Management
Water Efficiency
Recycle Water Program Background
First pipeline constructed in 1995, with deliveries to El Prado
Park and Golf Course in Chino and Ontario
In the late 1990’s, IEUA began to implement groundwater
recharge with recycled water at Ely Basin
In 2002, IEUA completed the Recycled Water Feasibility
Study
In 2005, IEUA completed the Recycled Water Implementation
Plan to prioritize the installation process of the regional
recycle water distribution system
In December 2007, IEUA adopted the aggressive Three Year
Business Plan to increase the use of recycled water within the
Agency’s service area
Recycle Water Status Map
Recycle Water Deliveries
*Recycled Water Delivery Jul 08 – Dec 08: 9,648 AF
Recycled Water Connected Demand
Recycled Water Goals
Three Year Business Plan Goals:
50,000 AFY Connected Demand by June 2012 (originally
targeted for June 2010).
Total future recycled water: 100,000 AFY
Recycled Water Program to be ultimately self-funded through
sales and MWD local project rebates.
Total construction estimated at $250 million
Recycled Water Funding
Water/Energy Assets of the Chino Basin
Groundwater
Continue to expand groundwater “conjunctive use” storage with MWD
Recycled Water
Over 100,000 Acre-feet of water available for reuse----25-30 percent of all
water use in Chino Basin
Storm Water Capture
Region now loses over 40,000 acre-feet per year on average of water that
historically recharged the Chino Groundwater Basin
Opportunities for Water/Energy Efficiency
Water conservation and improvements in water use efficiency
Local supplies and conservation save an equivalent
of over 50 MW of generating capacity
Example Of “Lost” Water-Energy Nexus
500,000
450,000
Imported water supplies have
been purchased, in part, to
replace lost stormwater
Cum Dep from Mean Precip
60
400,000
50
350,000
40
300,000
30
250,000
20
200,000
10
150,000
0
100,000
-10
50,000
-20
0
-30
70
Annual Storm Water Discharge
What is the energy value of
the lost storm water supply?
On average: 2250 kWh per
acre-foot
Cumulative Departure from Mean Precipitation (in/yr)
Over 40,000 acre-feet per year
on average is lost that
historically recharged the
groundwater basin
Figure 2-6 Storm Water Discharge Time History for the Santa Ana River Below Prado Dam
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
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1940
1941
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1944
1945
1946
1947
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1949
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1951
1952
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1955
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1958
1959
1960
1961
1962
1963
1964
1965
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1975
1976
1977
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1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
Hard surfacing and flood
control have changed the storm
water runoff pattern within the
Chino Basin
Annual Storm Water Discharge (acre-ft/yr)
Key Water/Energy Strategies
Maximize local supply development to increase locally
controlled “drought proof” supplies and balance less
reliable, more costly imported supplies
Implement “green” development standards for new
housing in the most rapidly growing region in
California
Develop Santa Ana River Watershed “comprehensive”
water quality/supply management strategies
Maximize integration of water supply investments to
reduce CO2 “Footprint” under AB 32
IEUA Innovations to Address Energy Needs
Constructed the nation’s first
platinum LEED-rated
headquarters by a public
agency (2003). With
installation of cogeneration
in 2009, it will become a
Zero Energy facility.
Constructed the nation’s first and
largest centralized anaerobic
digester to convert dairy manure and
food waste to methane gas (2003).
With planned expansions, it will
generate 3 MW.
IEUA’s Expanding Energy Project Portfolio
Of current energy needs of 11 MW, IEUA is self-generating about 7 MW –
recognized in July 2006 by the U.S. Environmental Protection Agency as one of
the nation’s top ten local government “purchasers” of renewable energy from its
own facilities
Core Projects:
“Cow Power” Anaerobic Digester Program: 3 MW by 2009 (Partners include California
Energy Commission, USDA Natural Resources Conservation Service and the Milk
Producers Council)
Solar Power 3.5 MW installed in 2008
Renewable Energy Efficiency Project: achieve minimum 65% generation efficiency by
combining innovative processes including a Stirling Engine, Organic Rankine Cycle
Unit, thermal energy storage and a fuel cell (Partners included the U.S. Department of
Energy)
Biogas Innovation Program
Three-Phase Thermophilic Digestion
Food Waste Additions
Flared Biogas Recovery (fuel cells)
Gassifier with or without production of liquefied biofuel
Conclusions
There are significant opportunities for wastewater and water agencies to save
energy, self-generate and reduce the need for additional electricity from the
state’s electric grid and thereby reduce significantly GHG emissions
Key strategies include:
Increase on-site energy production
Reduce water-related energy end-use
Energy efficiency design standards, partnering with electric and gas utilities to
increase efficiency of operations
Increase drought benefits from local groundwater storage
Biogas, solar, wind, hydro recovery, combined heat and power systems
RAND report on Global Climate Change
Save Energy by saving water
Reduce dependence on imported water supplies
Integrate water and energy conservation programs
For more information …
Contact:
Martha Davis
Inland Empire Utilities Agency
6075 Kimball Avenue
Chino, CA 91710
Direct Line: (909) 993-1742
E-Mail: [email protected]
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