Municipal and Industrial
Conservation and Water
Reuse Workgroup
Elizabeth Lovsted
Sr. Civil Engineer
Urban Water Institute
Annual Water Policy Conference
August 14, 2014
www.emwd.org 1
Presentation
• Background Information
• Municipal and Industrial Conservation and Water Reuse
Workgroup
o Scope of Work
o Preliminary Observations
• EMWD Case Studies
www.emwd.org 2
Background Information
www.emwd.org 3
Overview of EMWD
• Established in
1950
• Agency serving:
o Water / wastewater /
recycled
o Wholesale and retail
• Population:
768,000
• Member Agency:
Metropolitan Water
District of Southern
California (MWD)
www.emwd.org 4
EMWD Services
• Potable (drinking water): Approx. 137,000
accounts
• Imported water from the Bay Delta and Colorado
River
• Groundwater wells
• Menifee and Perris desalters
• Wastewater: Approx. 229,000 accounts
• 4 regional reclamation facilities
• Capacity: 63 million gallons/day (MGD)
• Recycled water: Approx. 300 accounts
• 35,850 AF sold in FY 2012/2013
• One of the largest in California!
o Agricultural/Irrigation: Approx. 120 accounts
www.emwd.org 5
EMWD 2013 Water Supply Portfolio
Imported
81,631 AF
58%
Local
58,359 AF
42%
www.emwd.org 6
M and I Conservation
Workgroup
www.emwd.org 7
Scope of Work
• Task 1: Review Basin Study to understand data and assumptions for
demand, M&I conservation, and reuse
• Task 2: Discuss Next Steps process, workgroup objectives, roles,
ground rules, draft scope of work, schedule
• Task 3: Quantify conservation and reuse savings to date within the
Study Area
a) Historical savings data from existing reports, studies, planning
documents and other readily available information
b) Data collection to focus on major metropolitan areas and large cities
c) Data to be reported by region
d) Estimate investments made in water use efficiency and reuse
e) Verify assumptions for water use efficiency and reuse in Study
www.emwd.org 8
Scope of Work, cont.
• Task 4: Document successful conservation programs
a) Provide supplemental qualitative and quantitative performance
information on successful conservation and reuse programs that have been
implemented within the Study Area and have potential to be expanded into
other areas within Study Area
b) Provide list of reports documenting successful conservation and reuse
programs that have been implemented outside the
Study Area and may have potential for
implementation within Study Area
www.emwd.org 9
Scope of Work, cont.
• Task 5: Provide information on projected future water
a) Quantitative data from existing and planned programs identified in
current planning documents
b) Evaluate future reuse opportunities, yield and costs
c) Evaluate future conservation opportunities, yield and costs
• Task 6: Report on assessments of the impact of historical and future
water savings on Colorado River demands
• Task 7: Identify Phase 2 activities, including any feasible and
appropriate action steps
www.emwd.org 10
Preliminary Observations
• M and I water conservation and reuse are an important part of
reducing the projected long-term imbalances between supply and
demand in the Basin Study Area
• Growth in demand can be met through a combination of
increased conservation and reuse and new supplies
• The magnitude of savings will depend on level of adoption
• Water providers have demonstrated the ability to reduce
demand since 1990
• The direct impact of M and I water conservation is uncertain
and depends on economic, policy, legal, and environmental
consideration
www.emwd.org 11
EMWD Case Studies
www.emwd.org 12
Highlighted Water Conservation
and Reuse Programs
• Over 30 programs
o
o
o
o
o
5 metering/billing
8 public education
2 water loss
6 residential indoor
8 commercial,
industrial and
institutional
o 8 outdoor landscaping
o 6 reuse
www.emwd.org 13
Case Studies
• Highlight in moderate detail
innovative programs
• Cover breadth of programs and
implementation
• 2-page fact sheets to serve as
appendix
• Highlighted programs to be
referenced in main body of
report
www.emwd.org 14
EMWD Case Studies
• Budget Based Tiered Rates
o Metering and Billing
• High Efficiency Clothes Washer
(Water/Energy Partnership)
o Residential Indoor
• Public School Retrofit Program
o Commercial, Industrial and
Institutional
www.emwd.org 15
Budget Based Tiered Rated
• Water pricing structure designed to:
o Provide each customer with an individualized allocation of water
o Reduce excess water use by sending a strong price signal
o Incentivize customers to stop wasteful water use
• Those who use water at the same level of efficiency pay the
same rate per unit
• Those who waste water pay more than those who use
resources efficiently
• Communicates the cost of “excessive and
wasteful” use of water
www.emwd.org 16
Budget Based Tiered Rated, cont.
Tier 1: Indoor Use
$1.73/unit*
o Budget = Number of Persons x 60 Gallons Per Day
Within
Allocation
Tier 2: Outdoor Use
$3.16/unit
o Budget = Landscaped Area and Evapotranspiration
Tier 3: Excessive
$5.66/unit
o Up to 50% use in excess of Indoor and Outdoor budgets
Over-allocation
Tier 4: Wasteful
$10.36/unit
— Over 50% in excess of Indoor and Outdoor budgets
* One billing unit equals 100 cubic feet
www.emwd.org 17
Budget Based Tiered Rated, cont.
• Cost to implement varies
o $0.8 to $3 million
o Includes agencies billing software,
budget development, consultant
support, and customer support.
o Cost per meter range from $20-$35
each
• 5-15% reduction in demand for
implementing agencies
www.emwd.org 18
High Efficiency Clothes Washer Direct Install
• Partnership with Southern California Gas and Electric
• Installs high efficiency clothes washers for low income
residential customers
• Grant funding through USBR
• Water And Energy Savings
• 1,700 washers installed
• $1.24 million cost
o
o
o
o
USBR
MWD
So Cal Gas
EMWD
• 57.8 Acre feet of water saved per year
www.emwd.org 19
Public School Retrofit Program
• Provides direct installation of water saving devices to school
• Goal of the program:
o Save water
o Encourage efficiency
o Remove barriers for school participation
• $670,000 Project Cost
o USBR
o MWD
o EMWD
• 206 Acre Feet of water per year
saved
www.emwd.org 20
Conclusion
• Water conservation and reuse
are an important part of meeting
growing demand
• Future water saving will depend
on a variety of future conditions
• Innovative and successful
conservation depend on many
elements, but can be used as
model moving forward
www.emwd.org 21
EASTERN MUNICIPAL WATER DISTRICT
Contact Information
Elizabeth Lovsted
Sr. Civil Engineer
(951) 928-3777 ext. 4307
lovstede@emwd.org
www.emwd.org 22