Empfohlen
Empfohlen
Weitere ähnliche Inhalte
Was ist angesagt?
Was ist angesagt? (20)
Ähnlich wie Dallas Water Utilities: One Water for a Sustainable Future
Ähnlich wie Dallas Water Utilities: One Water for a Sustainable Future (20)
Mehr von Texas Living Waters Project
Mehr von Texas Living Waters Project (20)
Kürzlich hochgeladen
Kürzlich hochgeladen (20)
Dallas Water Utilities: One Water for a Sustainable Future
- 1. Dallas Water Utilities One Water: A Water Efficient Future 8th Annual Gulf Coast Water Conservation Symposium Terry S. Lowery Director Dallas Water Utilities February 28, 2019 United Way Community Resource Center Houston, Texas
- 2. OUTLINE • Dallas Water Utilities Background • Long Range Water Supply Planning • Water Conservation • “One Water” 2
- 3. 3 DALLAS WATER UTILITIES FACT SHEET • Founded in 1881 • Funded from wholesale and retail water and wastewater revenues and stormwater fees (receives no tax dollars) • 699 square mile service area • Approximately 1,650 employees • 2.5 million treated water customers • 1.3 million – Retail (City of Dallas) • 1.2 million – Wholesale • 300,000+ retail customer accounts • 23 wholesale treated water • 4 Wholesale untreated water • 11 wholesale wastewater • FY19 Operating and Capital Budgets of $1.1B
- 5. CITY OF DALLAS WATER AND WASTEWATER ASSETS • 7 reservoirs, (6 connected) • 4,983 miles of water mains • 3 water treatment plants with a combined capacity of 900 MGD • 23 pump stations • 9 elevated and 12 ground storage tanks • Value of water assets $3.6B • Treated 142 BG of water in FY18 5 • 2 wastewater treatment plants with a combined capacity of 280 MGD • 15 wastewater pump stations • 4,040 miles of wastewater main • Value of wastewater assets $2.4B • Treated 62 BG of wastewater in FY18
- 6. CITY OF DALLAS STORM DRAINAGE SYSTEM 6 • 8 storm water pump stations with a combined capacity of 2.8 BGD • 1,963 miles of storm sewers • 30 miles of levees • 39,000 acres of floodplain
- 7. LONG RANGE WATER SUPPLY PLANNING FOR FUTURE SUSTAINABILITY 7 • Dallas’ 1959 Long Range Water Supply Plan was updated in 1975, 1989, 2000, 2005 and 2014 • The 1959 study recommended that Dallas supply water to surrounding cities • The passage of Senate Bill 1 of the 75th Legislative Session in 1997 changed water supply planning throughout the State • Regional water planning groups established • Regional and State water plans required every five years • Local plans to be provided to the Regional Water Planning Group for consideration in the Regional Water Plan
- 8. 2014 DALLAS LONG RANGE WATER SUPPLY PLAN 8 • Water Management Strategies • Additional Water Conservation • Indirect Reuse Implementation • NTMWD Swap Agreement • Main Stem Balancing Reservoir • Connect Lake Palestine • Neches Run-of-the-River • Lake Columbia
- 9. EFFECTS ON EXISTING SUPPLIES 9 Sedimentation Decreased Storage Volume Climate Change Increased Evaporation
- 11. CITY OF DALLAS WATER CONSERVATION PROGRAM 1 1
- 12. BRIEF HISTORY OF THE DALLAS WATER CONSERVATION PROGRAM • 1980 – 2000: Education and outreach • 2001: Irrigation Ordinance adopted; conservation rate tier added; Water Conservation Division established • 2002: Public Awareness Campaign • 2005: Five-Year Strategic Plan adopted; proactive leak detection and repair accelerated • 2006: Mascot DEW joins Conservation • 2010: Five-Year Plan updated • 2012: Irrigation Ordinance amended to include mandatory twice weekly maximum schedule • 2016: Five-Year Work Plan adopted 1 2
- 13. WATER CONSERVATION IRRIGATION ORDINANCE • Mandatory Irrigation Efficiency Scheduling • 2001 - Irrigation prohibited between 10 a.m. and 6 p.m. • 2012 - Maximum Twice Weekly Watering Schedule • Prohibited Reckless Irrigation Behaviors • Watering with broken, misaligned or missing heads • Watering causing excessive runoff • Watering impervious surfaces (sidewalks, streets, etc.) • Watering during precipitation or freezing temperatures • Rain/freeze sensors required on all automatic systems 1 3
- 14. * Estimated Water Savings Since FY2001 – 316 Billion Gallons WATER CONSERVATION PROGRAM CHRONOLOGY AND TRENDS •Five-Year Work Plan Updated Target GPCD 1% 1.5%
- 15. DWU WATER CONSERVATION TODAY • Public Awareness Campaign • Regional Campaign with TRWD- ‘Water Is Awesome’ www.WaterIsAwesome.com • Local Campaign- ‘Save Water. Nothing Can Replace It’ www.SaveDallasWater.com • Environmental Education Initiative K-12 • 26,914 children reached • Water-Wise Landscape Tour • Currently in its 25th year • Water-Wise Seminars Year-Round 1 5
- 16. City of Dallas Water Conservation Today
- 19. WHERE DO WE GO MOVING FORWARD • Industrial, Commercial, Institutional Rebate Program • An effort to help small businesses and companies defray the cost of new equipment and processes that conserve water • Residential Irrigation/ Landscape System Incentive Program • Incentives to Single and/ Multi Family residents that retrofit their existing irrigation systems with water-conserving equipment • City of Dallas demonstration garden • As part of City re-organization for 2019 Water Conservation will be consolidated into Office of Environmental Quality and Sustainability 1 9
- 20. ONE WATER 20
- 21. ONE WATER DEFINED One Water is an integrated planning and implementation approach to managing finite water resources for long-term resilience and reliability, meeting both community and ecosystem needs 2 1
- 22. BENEFITS OF A ONE WATER APPROACH • Greater resilience and reliability; • Opportunities to optimize regional infrastructure; • Sustainable community development; • New regulatory flexibility or opportunity; • Economic growth opportunity; and • Increased coordination among agencies/departments 22
- 23. Source: American Research Foundation, Blueprint for One Water, Project #4660
- 24. “Dallas’ One Water system will allow the City to manage watersheds, water resources, and water facilities in a more environmentally, economically and socially beneficial manner.” T.C. Broadnax, Dallas City Manager 24
- 25. FRAMEWORK OF ONE WATER DALLAS • Regional Systems • Regulatory Oversight • Infrastructure • System Operation • Water Quality Monitoring • Emergency Services • Long Range Planning Needs 25
- 26. Actions Taken • Established functional work groups among programs, provided support structure for programs to continue operations • Finalizing logistical moves for consolidated work groups • Established work processes to keep water, wastewater and stormwater revenues separate • Coordinated five year funding and rate projections for each of the three utilities • Developing scope for Comprehensive Stormwater System Assessment 26
- 27. FUNDAMENTALS OF ONE WATER 27 Environmental Stewardship Social Equity Economic Prosperity
- 28. QUESTIONS? Terry S. Lowery Director Dallas Water Utilities terry.lowery@dallascityhall.com 28 @DallasWaterUtilities
Hinweis der Redaktion
- . Good morning, my name is Terry Lowery and I am the Director of Dallas Water Utilities. I have been with the utility for 28 years working mostly in the planning, business and financial program areas. Today I want to tell you about some of the strategies employed by DWU in managing water resources, as well as our exciting transition to a “One Water” concept……..
- I am going to start by discussing the background of the utility, including the current water, wastewater and storm drainage systems. Then discuss the “extremes” encountered by the utility over the years, and our planning and water conservation efforts to address long term needs. I will then finish the presentation by discussing our transition to a “One Water” concept and how that will help the utility better manage our finite water resources.
- So for those that don’t know a lot about Dallas Water Utilities. We were founded in 1881……..
- As of September 15th, Dallas Water Utilities and Trinity Watershed Management merged into a “One Water” utility, which will be discussed later in this presentation. The pictures are from the newly constructed Able Pump Station which has a capacity of 1.2 billion gallons per day………
- Texas Water Code 16.051 – State Water Plan: Drought, Conservation, Development, and Management; Effect of Plan “The state water plan shall provide for the orderly development, management, and conservation of water resources and preparation for and response to drought conditions, in order that sufficient water will be available at a reasonable cost to ensure public health, safety, and welfare; further economic development; and protect the agricultural and natural resources of the entire state.” State Water Plan every 5 years not later than January 5, 2002 Texas Water Code 16.053 – Regional Water Plans Establishes Regional Water Planning Areas and Regional Water Planning Groups Regional Water Plan every 5 years Texas Water Code 16.054 – Local Water Planning Plans that address “drought or the development , management, or conservation of water resources” to be submitted to appropriate Regional Water Planning Groups 31 TAC §357.22 General Considerations for Development of Regional Water Plans “RWPGs [Regional Water Planning Groups] shall consider existing local, regional, and state water planning efforts, including water plans, information and relevant local, regional, state and federal programs and goals when developing the regional water plan” 31 TAC §357.32 – Water Supply Analysis RWPGs shall evaluate “source water availability” and existing water supplies that are legally and physically available” during the “drought of record” Lake Grapevine (1952) Lake Lewisville (1955) Lake Tawakoni (1964) Lake Palestine (1971) Lake Ray Hubbard (1973) Lake Ray Roberts (1989)
- Water Supply deficit (i.e. loss of reserve) begins in 2027 By 2070 the DWU Regional System needs an additional 258 MGD Because of the success of Dallas Water Conservation programs, To date DWU’s average day water demand projection is approximately 23% lower in our 2014 LRWSP than the project in our 2005 LRWSP Strategy Capital Cost Annual O&M (millions) (Millions) Additional Conservation* $ 373.825 $ 31.4886 Main Stem Pump Station (NTMWD Swap Agreement $ 75.486 $ 1.392 Main Stem Balancing Reservoir $ 674.463 $ 19.8 IPL Connection to Palestine $ 938.95 $ 21.295 IPL Connection to Bachman $ 874.0 $ 3.0 Neches Run-of-River $ 226.79 $ 13.052 Lake Columbia $ 270.974 $ 12.689 TOTAL $3,434.49 $102.72 *Water conservation costs are based on the TWDB Unified Cost Model – It is developed as a cost per acre foot and multiplied by the number of acre feet saved by conservation this gives the Annual O&M cost which is then amortized for 30 years to give the Capital cost. It is basically a cost of a project if you had to develop water versus conserving water. Supply Buffer Percent 2020 – 16.0% 2030 – 28.4% 2040 – 16.1% 2050 – 17.4% 2060 – 14.6% 2070 – 16.0%
- Alternate Strategies Strategy ID Planned Supplies (MGD) D-1 Direct Reuse Alternative 1 2 E-1 Carrizo Wilcox Groundwater 2 27 H Sabine Conjunctive SysOp (Off Channel Reservoir and 93 Groundwater) J-2 Red River Off Channel Reservoir -1 102 + L-1 Wright Patman / Marvin Nichols 102 O-2 Toledo Bend to West System 179 Q Lake Texoma Desalinization 130
- Today, I want to give an overview of the development, progress and path forward for our water conservation program ….
- In 2012 Dallas stepped out front, to be the first City in Texas to adopt a mandatory twice weekly watering schedule.
- In 2001 Dallas Council passed the Water Conservation Ordinance unanimously. 2010-2012 Drought By Dec. 2011, all of North Texas was in drought response. Most allowing outdoor irrigation no more than twice per week, NTMWD could only allow irrigation once a week Area Mayors led the way Dallas, Arlington, Irving and Fort Worth mayors held a press conference April 4, 2012 supporting a permanent no more than twice-weekly watering schedule Twice Weekly Watering was adopted by Dallas City Council on April 18, 2012 and went into effect on April 23.
- to maximize resources and minimize overlap while achieving water conservation and zero waste goals.
- Now, I would like to talk about our “One Water” concept and how it will assist DWU in better managing its finite water resources……..
- The Water Research Foundation definition of “One Water” reads as follows: For Dallas Water Utilities, One Water will allow the City to link together all aspects of the water cycle allowing us to better manage watersheds, water resources and water facilities in an environmentally, economically, and socially beneficial manner.
- By integrating stormwater management into water and wastewater management, we can - Increase reliability and resiliency by using stormwater as a resource, instead of a waste product. Can better plan, design and construct infrastructure improvements in a “dig once” approach. Increase sustainability through innovative ideas such as decentralized stormwater storage that can be used for local irrigation, groundwater replenishment, etc. Better protect our water resource through integrated source water protection and watershed protection. Better promote economic development by ensuring a diverse, and stable water supply, treatment and drainage system.
- Historically, cities have had a linear approach to water resources. First they look to secure water supplies, then construct sewer facilities to deal with sanitation issues, and more recently determine methods for coping with storm drainage and flooding. Dallas’ history coincides with that approach until recently, when we linked the water and wastewater process together through the use of wastewater effluent for various purposes. And with this transition to a “One Water” concept, we are completing the urban water cycle. Management of Stormwater: instead of stormwater being something to be conveyed away, the One Water Approach values it as a resource that can be harvested as a water supply source. Management of Waste: can be a resource used productively to generate energy. Southside WWTP uses a cogeneration facility to provide almost half the power at that plant. Management of Water Demand: instead of traditionally meeting new demand with new supplies and infrastructure, prioritize options to reduce demands such as recycling and increased conservation. Choice of technological solutions: instead of individual solutions look for diverse solutions to encourage coordinated solutions. An example is Bachman Lake, a small lake near Love Field. The lake has competing needs: DWU some dam improvements; Aviation and former TWM (now DWU SDM) drainage issues for the airport and neighborhood, Parks amenities and dredging for recreation. Departments are working together to find best solution for all competing needs and have a stakeholders’ task force engaged in the process for community engagement.
- I started with Dallas 27 years ago in the Water Planning Division, Dallas has a long history of looking ahead to meet the future needs of our customers. In 2000 with record demands, we started changing our business model from “selling water” to “providing water and wastewater service” with a seriously revamped water conservation program designed to extend our resources and use our water supply system more efficiently and effectively. Now is the time to move forward again taking a wholistic approach to managing our finite water resources and expanding our definition to include stormwater.
- We are very early in the process of developing One Water Dallas. We have been discussing the possibility for several years with serious planning beginning in June. Some of the obvious reasons for this decision are: Regional systems Area reservoirs serve as both regional flood control and water supply in partnership with the US Army Corps of Engineers, State of Texas, and City of Dallas. Funding requirements and regulatory requirement can be addressed holistically with this approach. Regulatory oversight Regional, state and federal regulatory actions for floodplain, flooding, stormwater and water within similar committees and legislative initiatives. Infrastructure Planning, design, construction, operations and maintenance activities (assuming funding availability) can begin to be approached in a more streamlined manner maximizing future needs. Systems Operation Technology for current systems co-exist today and future technology needs can be addressed to create needed redundancies and maximize the benefits from annual operations and capital budget efforts. Water Quality Monitoring Regulatory requirements for stormwater runoff and water quality from discharges overlap providing the opportunity to lead the region and state in surface water runoff monitoring and management. Emergency Services Synergies between existing 24/7 services enhanced through shared resources. Long Range Planning Needs Water supply and delivery over time will require additional sources for recapturing, storage and supply. Conversations regarding Floodway storage, detention of stormwater and tunnel storage/releases can be better studied and implemented under a one water system.
- Funding for scheduled and unscheduled maintenance FY20 Budget includes $5M for Neighborhood Drainage Services and includes some maintenance work Evaluate staffing, fleet and equipment needs for Stormwater Utility Re-alignments Work shared with Public Works Recreational amenities Currently budgeted reimbursements Policy decisions Creek erosion – public vs private property Residential vs commercial properties Bond issuance vs Storm Drainage Management debt Award Comprehensive Stormwater System Assessment project Capital Program Development Preliminary estimates for a starting Capital Improvement Program using model developed with rate consultant Using Comprehensive Assessment to develop Capital Program and update needs inventory
- Environmental Stewardship with healthier watersheds and resilience against climate change. Social Equity through affordable projects that provide multiple benefits to all communities Economic Prosperity through increased efficiency through more reliable water, wastewater and stormwater systems and also increased efficiency in operations of our utilities Texas is a state with a high degree of variability in weather from extremes of drought to periods of very heavy rainfall. Climate change models indicate even more extremes in the future adding additional complexity to the already challenging job for water service providers. Dependability, sustainability and reliability are critically important in planning for the future needs of our communities. The One Water concept requires flexibility and an openness to diverse solutions instead of linear thinking. These skillsets will better equip us to meet the future needs of our communities.