Inland Empire Utilities Agency (IEUA)

Recycled Water Program

Martha Davis, IEUAMarch 4, 2009

State Water Board, California Public Utilities Commission and the Water Energy Climate Action Team

Climate Change Scoping Plan Implementation WorkshopMeasure 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

Climate change

AB 32 Green

Building Codes

Rising Energy Costs

GHG reductions through water management

No Delta Fix

Drought

Decreased water reliability

Flooding

Delta PumpingRestrictions

Water qualityregulations

Water Bond?

Increasing costs

Less Snow –More Rain

Economic Recession

20x2020DWR/SWRCB

Budget Crisis

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%

Imported Water Supply

71%

Waste Treatment

14%

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

400

9501,050

1,700

2,000

2,500

3,200

4,400

-

500

1,000

1,500

2,000

2,500

3,000

3,500

4,000

4,500

KW

H/A

F

Recycling Groundwater

Pumping

Ion Exchange Chino

Desalter

Colorado

River

Aqueduct

West Branch

State Project

Water

East Branch

State Project

Water

Ocean

Desalter

Energy Use by Source

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

� 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 Program Background

Recycle Water Status Map

Recycle Water Deliveries

*Recycled Water Delivery Jul 08 – Dec 08: 9,648 AF

Recycled Water Connected Demand

Three Year Business Plan 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 Goals

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 Local supplies and conservation save an equivalent of over 50 MW of generating capacityof over 50 MW of generating capacity

Example Of “Lost” Water-Energy Nexus

� Hard surfacing and flood control have changed the storm water runoff pattern within the Chino Basin

� Over 40,000 acre-feet per year on average is lost that historically recharged the groundwater basin

� Imported water supplies have been purchased, in part, to replace lost stormwater

� What is the energy value of the lost storm water supply? On average: 2250 kWh per acre-foot

Figure 2-6 Storm Water Discharge Time History for the Santa Ana River Below Prado Dam

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nual S

torm

Wate

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arg

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acre

-ft/yr)

-30

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lati

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m M

ean P

recip

itatio

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/yr)

Annual Storm Water Discharge

Cum Dep from Mean Precip

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 thestate’s electric grid and thereby reduce significantly GHG emissions

� Key strategies include:

� Increase on-site energy production

� Biogas, solar, wind, hydro recovery, combined heat and power systems

� 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

� 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: mdavis@ieua.org

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