The Drought’s Affect on Dallas Water UtilitiesTexas Water Conservation Association 68th Annual Convention Dallas, Texas March 8, 2012 Jo M. (Jody) Puckett, P.E.
Dallas Water Utilities • The Water Department was founded in 1881 • The Water Department is funded from water and wastewater revenues, and does not receive tax dollars • Approximately 1,500 employees todayConstruction of White Rock Dam 1911 Record Crossing Elm Fork of the Trinity River 1896 2
DWU Utility Services• Treated Water Service ~1.2 million - Dallas (retail) ~1.0 million – 23 wholesale customer cities• Untreated Water Service ~207,000 – 4 wholesale DENTON COLLIN customer cities TARRANT ROCKWALL• Total Population served for Water 2.4 million LEG EN D DALLASRETAIL DALLAS KAUFMAN SERVIC E AREA WHOLESALE• Wastewater Service CUS MERS TO ~1.16 Million Dallas (retail) TREAT WAT ED ER C USTOMER ~104,500 – 11 customer cities UNTREAT WAT ED C USTOMER ER ~1.26 million – Total population TREATED & UNTREATED WATER CUST OMER DALLAS ELLIS 21a p ril10• 699 square mile service area 4
Dallas Water Utilities Assets Water Assets Wastewater Assets• 7 surface reservoirs, (6 • 2 Wastewater treatment connected and 1 currently plants with a combined not connected) capacity of 260 MGD• 5166 miles of water mains • 15 wastewater pump stations• 3 Surface Water Treatment • 4,364 miles of wastewater Plants with a combined main capacity of 900 MGD with an • Value of wastewater assets additional 100 MGD by 2015 $1.883 Billion• 22 water pump stations• 9 elevated and 12 ground storage tanks• Value of water assets $2.454 Billion Combined water and wastewater system outstanding debt $2.923 Billion
How Dallas’ System Water is Used 10.5% 3.4% 48.8% 37.3% Retail Wholesale Unbilled Authorized Water LossRepresents Total Water Use for FY04 – FY08; Dallas serves a total population of 2.3M people 6Source: City of Dallas Water Conservation Five-Year Strategic Plan Updated June 2010
DWU Water Conservation Program Timeline City Council adopted first Five-Year Water Council adopted Conservation Strategic an updated Five- City of Dallas water Plan including incentives Year Strategic conservation program Plan consisted primarily of public education and outreach1980 2001 2005 2007 2010 GPCD Comparisons* Time of dayCouncil passed an ordinance watering restrictionsprohibiting lawn and Not the Whole Story expanded to Aprillandscape water waste; through October City 2008 Gallons 2008 annuallyadding time of day watering; per Capita Residentialand added additional rate tiers per Day GPCD (GPCD) Rain sensor rebate Houston 134 65 program established San Antonio 149 92 *Source: Texas Water Development Board Dallas 213 95 2012 Water Plan Austin 171 102 7 Fort Worth 192 75
Conservation Strategic Plan ProgramsCity Leadership & Commitment Reduce water loss through additional leak detection Reduce water loss through improved metering accuracy Voluntary twice weekly watering Industrial, Commercial and Institutional (ICI) Water-efficient Equipment Rule Water-wise landscape design requirements Texas High Efficiency Toilet (HET) LawEducation and Outreach Initiatives ICI Hospitality Program ICI Customer Water Audits ICI Training Programs ICI Business Partnership/StakeholdersRebates and Incentives Enhanced residential toilet incentives ICI Financial Incentive Program Residential Irrigation Incentive Program Residential clothes washer rebate 8 Source: City of Dallas Water Conservation Five-Year Strategic Plan June 2010
10Water Supply Benchmarks – 75% capacity remaining after 18 months and 50% remaining after 3 ½ years
Water Use and 2012 Water System Restriction Water Consumption FY10 and FY11 750 650 MGD 550 450 350 250 11/12 11/26 10/1 1/21 2/18 3/17 3/31 4/14 4/28 5/12 5/26 6/23 7/21 8/18 9/15 9/29 10/15 10/29 12/10 12/24 1/7 2/4 3/3 6/9 7/7 8/4 9/1 FY10 FY11 85% Available Treatment Capacity Treatment Capacity During ConstructionNote: Graph shows that water restrictions would be needed in FY10 and FY11. 11 11FY10 was a relatively wet year; FY11 was hot and dry.
Drought Measure Implementation• June 2010 - Dallas’ Drought Contingency Plan adopted by the Council and submitted to the State• August 2011 - Dallas called for customers to voluntarily restrict outside watering 1950s Drought• December 12, 2011 - Dallas entered Stage 1 of its Drought Contingency Plan• February 8, 2012 – Dallas extended Stage 1 of its Drought Contingency Plan 12
Current Drought Conditions - Drought Monitor February 28, 2012 Jan 18, 2011 April 5, 2011 June 28, 2011 Sept 13, 2011 Nov 22, 2011 13 6Source: National Drought Mitigation Center