LADWP WATER CONSERVATION IEPR Workshop

August 28 2015

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SB x7-7 Water Conservation Act (2009)

Mayor’s Directive #5 – GPCD – October 2014

Governor’s Executive Order B29-15 - GPCD - April 2015

Mandate Reduce by 20% by 2020

Reduce water usage 20% by 2017

Reduce total mnthly water usage by 16% through 2016

Baseline 152 GPCD 131 GPCD Total monthly water usage in baseline yr 2013

GOAL 138 GPCD by 2020

104 GPCD by 2017

16% reduction in monthly water use: June 2015 through Feb 2016

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• Behavioral changes through Education and Awareness

• Codes and Standards• Hardware programs – rebates and

incentives

Break-down of drought actions

Water Waste

Water Conservation Response Unit– hired more people – able to address

complaints more quickly – canvasing high usage areas

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Water conservation LA OrdinancesHigh Efficiency Plumbing Fixtures Ordinance 180822, effective 12/1/2009 mandating 1.28 GPF WC, 1 pint urinals, 2 gpm shower heads, reduced flow lavatory faucets, 5.5 cycles of concentration for cooling towers, prohibited single pass cooling systems and mandated energy star listed residential dishwashers.

Codes and Standards

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Construction techniques to be mandated for new construction on or before the next adopted edition of California Plumbing Code. • Specify hot water delivery time, • Tightening landscape irrigation allowances• Mandates for dual waste water collection of

Gray W• increasing use municipally distributed

Reclaimed/Recycled Water, • Mandating water submeters for outdoor use

and for 3 story or less multi-family residential buildings,

• mandate of residential swimming pool covers.

Codes and Standards

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Landscape Guidelines effective 4/1/2011, implemented State Model Water Efficiency Landscape Ordinance further reducing irrigation demand.Low Impact Development Ordinance 181899 reduces storm water runoff to ocean through on site infiltration where possible.New model landscape ordinance – in effect by December 2015

Codes and Standards

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SoCal WaterSmart Commercial Highlights:

• Multifamily HETs and Premium HETs: • FY 12/13 49,705 rebates• FY 13/14 87,906 rebates• FY 14/15 86,890 rebates

Break-down of drought actions

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SoCal WaterSmart Commercial Program Highlights:

• Commercial Turf Replacement: • FY12/13 398,090 sq ft• FY13/14 145,766 sq ft• FY14/15 1,551,882 sq. ft.

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SoCal WaterSmart Residential Program Highlights:

• Residential HET Toilet Replacements: • FY12/13 1,840 rebates• FY13/14 2,757 rebates• FY14/15 55,290 rebates

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SoCal WaterSmart Residential Program Highlights:

• Residential Turf Replacement: • FY12/13 140,401 sq ft• FY13/14 1,765,704 sq ft• FY14/15 7,606,840 sq. ft.

Break-down of drought actions

Customized Water Conservation Projects

Rebate pays $1.75 per 1,000 gallons of water conserved during first 2 yearsPopular Projects: • Cooling Tower Efficiency Upgrades• Recirculation projects• Recycling projects

Application and Pre-Inspection Required

Technical Assistance Program (TAP) – next frontier of water

conservation?

LADWP Business Customer • 55 facilities• Fully Automated Water Treatment

LADWP Water Conservation Staff• Approved a $140,000 incentive based on

the installation for all 55 facilities for equipment which enables acid treatment • Rebated $3,000/store from SoCal Water

Smart for pH/Conductivity controller• So far have also seen energy savings

(in 6 original pilot facilities)

TAP Customer Success! Cooling Tower Project

Example

Total Project Cost $305,000

Total LADWP Rebate$140,000

Total MWD Rebate$165,000

Estimated AnnualWater Savings2.4 million gallons

Estimated AnnualLADWP Water Bill Savings$238,500 Energy Savings – seen about a 4% decrease/store in energy usage for 6 test stores

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Evaporative condenser

Evaporative Condenser

Water Evaporates

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Industrial Launderer:$800,000 - $30,000 (LADWP rebate) - $20,000/yr. (Gas Company rebate - $130,000/yr from water, sewage, and gas costs.

Payback is 5.8 years

TAP Customer Success! Reusing wastewater in industrial laundry

Total Project Cost $800,000LADWP Rebate$30,000Gas Company rebate$20,000Savings by decreasing water usage and sewage: $130,000/yr

18Ceramic Filtration

19Ceramic Filtration

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THE END!