Water Resources Management Contra Costa County Contra Costa

Water Resources Management Contra Costa County Contra Costa Water District East Bay Municipal Utility District Contra Costa County Climate Leaders Workshop October 3, 2013 Maureen Martin (CCWD) Paul Gilbert-Snyder (EBMUD) Contra Costa County Climate Leaders Workshop October 2013

Presentation Overview • CCWD & EBMUD supplies and service areas • Anticipated future changes in supply & demand • Water management strategies • Additional resources Contra Costa County Climate Leaders Workshop October 2013

EBMUD & CCWD Service Areas in Contra Costa County Climate Leaders Workshop October 2013

Average Annual Bay Area Water Demands Note: 1 acre-foot of water serves 2 -3 families in one year CCWD 120, 00 acre-feet 500, 000 people EBMUD 200, 000 acre-feet 1. 3 M people Zone 7 SFPUC 300, 000 acre-feet 2. 4 M people 48, 000 acre-feet 200, 000 people 330, 000 acre-feet 1. 8 M people SCVWD Contra Costa County Climate Leaders Workshop October 2013

EBMUD’s Existing Water Supply System EBMUD’s Dry Year Supplemental Supply (FRWP) EBMUD’s Pardee and Camanche Reservoirs EBMUD’s Mokelumne Aqueducts EBMUD’s Local Storage Reservoirs Contra Costa County Climate Leaders Workshop October 2013

Contra Costa Water District Supply System Contra Costa County Climate Leaders Workshop October 2013

‘Normal Year’ Water Supply Portfolio of CCWD Service Area Surface Water Diversions from Delta Recycled Water Groundwater Passive Conservation ECCID Supply Contra Costa County Climate Leaders Workshop October 2013

Potential Changes due to Climate Change Supply Demand • Changes in timing and quantity of precipitation in the Sierras • Sea level rise could increase sea water intrusion into the Delta, decreasing amount of time surface diversions are suitable quality • Increased air temperatures could increase outdoor demands • Changes in local precipitation could change water demands • Changes in development could change water demands Contra Costa County Climate Leaders Workshop October 2013

Water Management Strategies • • Increase Conservation Increase Water Recycling/Reuse Diversify Supply Portfolio Acquire New Supplies Contra Costa County Climate Leaders Workshop October 2013

Water Conservation Act of 2009 (SBX 7 -7) v v 20% reduction in per capita water use by the year 2020 Each urban retail water supplier must develop water use targets by July 1, 2011 and the following must be included in the UWMP: • Baseline daily per capita water use • 2015 interim water use target • 2020 water use target Contra Costa County Climate Leaders Workshop October 2013

CCWD SBX 7 -7 Interim and Compliance Water Use • Additional plumbing code savings • Continued conservation programs • New conservation programs • CII • Fixtures • Landscape • Recycled water Contra Costa County Climate Leaders Workshop October 2013

EBMUD SBX 7 -7 Interim and Compliance Per Capita Water Use Baseline = 165 GPCD 10 -year (1995 -2004) • Baseline = 165 GPCD • Min. 5% 2020 Target = 150 GPCD • Calc. 2020 Target = 175 GPCD • UWMP Target = 150 GPCD • 2015 Target = 158 GPCD • Suppressed demand during drought recovery will help achieve 2020 water use target. • Projected demand goal in 2020 lower than 2020 water use target. Projected 2020 Conservation And Recycling 144 GPCD

Use Less, Conserve More CCWD Conservation Program • • Water use evaluations Rebates Water budget Educational materials EBMUD Conservation Program • • • Water use evaluations Rebates Water budget Grey water/Rain water Landscape ordinances Contra Costa County Climate Leaders Workshop October 2013

CCWD Conservation Services • Indoor Water Use Evaluations – Review all indoor water use – Identify inefficient fixtures – Provide recommendations for replacement or repair • Landscape System Evaluation – – • Rebate Program – – • Review existing watering schedule Inspect sprinkler system Provide site-specific watering schedule and set controller with customer Provide site specific recommendations for improving long term water use efficiency Lawn to garden conversion High efficiency toilets and clothes washers Smart Irrigation Timers Commercial devices and fixtures Water Budgets – – Site specific estimate of landscape water demand Compare weekly meter readings to ensure use is on budget Contra Costa County Climate Leaders Workshop October 2013

EBMUD Conservation Program • Indoor Water Use Evaluations – Indoor water use surveys – Commercial/Industrial water use surveys – Provide recommendations for equipment upgrades • Landscape System Evaluation – – – • Landscape water surveys Landscape water budgets Leak detection Landscape irrigation upgrades Landscape ordinances Graywater/Rainwater harvest Rebate Program – High efficiency toilets, clothes washers, dish washers – Smart Irrigation Timers – Commercial devices and fixtures Contra Costa County Climate Leaders Workshop October 2013

Recycle and Reuse CCWD Service Area EBMUD Service Area • Central Contra Costa Sanitary District • North Richmond Water Reclamation Plant & Richmond Advanced Recycled Expansion – Concord/Pleasant Hill landscape irrigation – Future Concord Naval Weapons Station development • Delta Diablo Sanitation District – Pittsburg/Antioch irrigation – Dow wetlands – Power plants • Current Use: ~ 9 mgd • Future Use: ~ 14 mgd – Industrial boilers & cooling towers at Chevron refinery • San Ramon Valley Recycled Water Project – Irrigation • Current Use: ~ 7. 6 mgd • Future Use: ~ 20 mgd (by 2040) Contra Costa County Climate Leaders Workshop October 2013

Diversify Supply Portfolio CCWD Multi-year Drought Scenario Surface Water Diversions from Delta Recycled Water Groundwater Passive Conservation Drought Conservation ECCID Supply LV Supply Contra Costa County Climate Leaders Workshop October 2013

EBMUD Future Drought Supply Portfolio Note: Customer rationing limited to 15%

Acquire New Supplies • Purchase imported water from other parties – Sept 2013 EBMUD & CCWD successfully completed a one time transfer from Woodbridge Irrigation District • Pump more groundwater – Cities of Brentwood, Pittsburg pump their own groundwater – Bay Point receives groundwater from Golden State Water Company – Oakley receives groundwater from Diablo Valley Water District • Develop groundwater banking conjunctive use programs • Obtain/increase water rights for local streams • Desalinate surface or groundwater – Bay Area Regional Desalination Project has completed site specific analyses of a possible facility at Mallard Slough Intake Contra Costa County Climate Leaders Workshop October 2013

Additional Information & References CCWD References EBMUD References • CCWD Water Conservation Office • Conservation Contact http: //www. ebmud. com/water-andwastewater/watersmart-center • Water Supply Publications http: //www. ebmud. com/water-andwastewater/water-supply • Climate Change http: //www. ebmud. com/climate-change Chris Dundon (925) 688 -8136 cdundon@ccwater. com • CCWD Water Supply Publications http: //www. ccwater. com/publications /index. asp? sec=ws Bay Area Regional Desalination Project http: //www. regionaldesal. com/ Contra Costa County Climate Leaders Workshop October 2013

Questions • CCWD Maureen Martin mmartin@ccwater. com (925) 688 -8323 • EBMUD Paul Gilbert-Snyder pgilbert@ebmud. com (510) 287 -0432 Contra Costa County Climate Leaders Workshop October 2013