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))

• Flat 20% reduction in per capita water use from baseline

20% reduction from base gpcd

Option 2(Water Code 10608.20(b)(2))

55 gpcd indoor

Model ordinance outdoor

10% CII reduction

+

+

Total of specific efficiency measures:

(a) 55 gpcd indoor use

(b) Implementation of model landscape ordinance

(c) 10% reduction in CII water use

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))

DWR report to Legislature by 12/31/10

Climatic differences

Density differences

Regional flexibility

Regional plant

needs

Different levels of

CII

Previous conservation

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/wateruseefficiency/sb7/docs/U4-LegReport-2011.pdf

2015 and 2020 Targets(Water Code 10608.12(j), 10608.24(a)-(b))

Baseline gpcd

2015 gpcd

2020 target

2015 Mid-point

2020 target

2020 gpcd

Achieved

Planned

Achieved

Baseline – Gross Water Use(Water Code 10608.12(g))

Base gross water use Recycled water

Long-term

storage

Delivery to other

suppliers

Ag use

Water in distribution system

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))

Default

10% recycled in 2008

5% Option 3

1989

1994

2000

2004

2010

2002

2005

1995

2007

2004

2010

2010

Target vs. ComplianceSBX7 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 CII

compliance

Outdoor compliance

Indoor 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 Option 4

DWR 2016 report

Where is Cal. on 20x2020?