Urban Water Conservation
Under 2009 Legislation
Ryan S. Bezerra
February 8, 2013
2009 Water
Legislation
Feb. 28, 2008 Governor
Schwarzenegger’s letter to
Legislature identifies
conservation as part of
comprehensive Delta
package
On November 4, 2009, the
Legislature passes a
conservation bill – SB 7 – as
part of package of water bills
that include Delta reforms and
water bond
Option 1
(Water Code 10608.20(b)(1))
20% reduction
from base gpcd
• Flat 20% reduction in per
capita water use from
baseline
Option 2
(Water Code 10608.20(b)(2))
Total of specific efficiency
measures:
55 gpcd
indoor
+
(a) 55 gpcd indoor use
(b) Implementation of model
landscape ordinance
(c) 10% reduction in CII water
use
Model
ordinance
outdoor
+
10% CII
reduction
Option 3
(Water Code
10608.20(b)(3))
• Option 3
agencies must
achieve 5%
reduction except
• No reduction if
use below 100
gpcd
DWR
regional
target
from
draft
20x2020
plan
(April
2009)
Supplier
base
gpcd
Option 4
(Water Code
10608.20(b)(4))
Previous
conservation
Climatic
differences
DWR report
to Legislature
by 12/31/10
Density
differences
Regional
flexibility
Different
levels of
CII
Regional
plant
needs
Option 4
• Developed by
Dept. of Water
Resources (DWR)
• Targeted for 20%
statewide if
everyone used
• Outdoor used as
gap-filling factor
• Final report:
http://www.water.ca
.gov/wateruseeffici
ency/sb7/docs/U4LegReport2011.pdf
2015 and 2020 Targets
(Water Code 10608.12(j), 10608.24(a)-(b))
Baseline
gpcd
2015 gpcd
2020 gpcd
Achieved
Achieved
2015
Midpoint
2020
target
Planned
2020
target
Baseline – Gross Water Use
(Water Code 10608.12(g))
Water in distribution system
Base gross water use
Recycled
water
Longterm
storage
Delivery
to other
suppliers
Ag use
Can exclude process water from gross water use if a
“substantial percentage of industrial water use” to
avoid “disproportionate burden on another customer
sector” (Water Code 10608.24(e))
Baseline – Time Periods
(Water Code 10608.12(b))
2004
1994
Default
2000
2010
1989
10%
recycled
in 2008
2004
1995
2010
2002
2007
5%
Option 3
2005
2010
Target vs. Compliance
SBX7 7 contains
detailed rules only for
setting conservation
targets
SBX 7 says that a
supplier can meet its
conservation target
through combination
of measures, but no
“disproportionate
burden” on any
sector (Water Code
10608.26(b))
Indoor
target
Outdoor
target
CII
target
Indoor
compliance
Outdoor
compliance
CII
compliance
Results – 2010 Plan
Targets
• April 2012 report
by DWR
identifies how
many agencies
chose various
options and how
much
conservation
urban water
suppliers have
targeted for 2020
www.water.ca.gov/urbanwatermanagement/docs/Report%20to%20Leg%20on2010%20UWMPs-6-25-2012.pdf
Future – DWR 2016 20x2020 Report
(Water Code 10608.42)
• By Dec. 31,
2016, DWR
report on
overall state
progress
toward 20%
gpcd
reduction and
recommend
next steps
Option 1
Option 2
Option 3
DWR 2016 report
Where is Cal. on
20x2020?
Option 4