Strategic Water Supply Plan February 2013 Strategic Water Supply Plan February 2013 Prepared by: City Council Water Advisory Commission Glen C. Robertson, Mayor James Collins, Chairperson Karen Gibson, District 5 (Mayor Pro Tem) Suzanne Baker Victor Hernandez, District 1 Zachary Brady Floyd Price, District 2 James Conkwright Todd Klein, District 3 Bruce Maunder Jim Gerlt, District 4 Ken Rainwater Latrelle Joy, District 6 George Sell Maggie Trejo Table of Contents Section Page ES Executive Summary ................................................................................................ ES-1 1.0 Introduction ................................................................................................................ 1-1 1.1 History ............................................................................................................ 1-1 1.2 Purpose ........................................................................................................... 1-2 1.3 Description ..................................................................................................... 1-3 2.0 Water Demand Projections ........................................................................................ 2-1 2.1 Population ..................................................................................................... 2-1 2.2 Per Capita Consumption ................................................................................ 2-3 2.3 Annual Water Demand ................................................................................... 2-4 2.4 Peak Day Water Demand ............................................................................... 2-5 3.0 Decommissioned Water Supplies .............................................................................. 3-1 3.1 City of Lubbock Well Field ........................................................................... 3-2 3.2 Shallowater Well Field ................................................................................... 3-3 4.0 Current Water Supplies .............................................................................................. 4-1 4.1 Canadian River Municipal Water Authority (CRMWA) ............................... 4-5 4.2 Bailey County (Sandhills) Well Field ......................................................... 4-10 4.3 Lake Alan Henry ......................................................................................... 4-11 4.4 Current Water System Capacity ................................................................... 4-13 4.5 Water Demand vs. Current Water Supply.................................................... 4-15 5.0 Water Conservation Strategies ................................................................................... 5-1 5.1 Overall Water Conservation Trends............................................................... 5-1 5.2 Indoor Water Conservation Trends ................................................................ 5-3 5.3 Current Conservation Rate Structure ............................................................. 5-5 5.4 Unaccounted for Water Loss .......................................................................... 5-7 5.5 Public Education Effort .................................................................................. 5-8 5.6 Existing Water Conservation Ordinances .................................................... 5-11 5.7 Potential Water Conservation Strategies ...................................................... 5-11 Strategic Water Supply Plan February 2013 -i- Table of Contents Section Page 6.0 Reclaimed Water Strategies ....................................................................................... 6-1 6.1 Types of Reclaimed Water Uses .................................................................... 6-1 6.2 Existing Reclaimed Water Infrastructure ....................................................... 6-3 6.3 Available Reclaimed Water ........................................................................... 6-6 6.4 North Fork Diversion at County Road 7300 Strategy .................................. 6-10 6.5 Direct Potable Reuse to NWTP Strategy ..................................................... 6-15 6.6 Direct Potable Reuse to SWTP Strategy ...................................................... 6-20 6.7 South Fork Discharge Strategy .................................................................... 6-25 6.8 North Fork Diversion to Lake Alan Henry Pump Station Strategy ............. 6-30 6.9 Reclaimed Water Aquifer Storage and Recovery Strategy .......................... 6-35 7.0 Groundwater Strategies .............................................................................................. 7-1 7.1 Groundwater Sources ..................................................................................... 7-1 7.2 Groundwater Usage Regulations ................................................................. 7-12 7.3 Roberts County Well Field Capacity Maintenance Strategy ....................... 7-14 7.4 Bailey County Well Field Capacity Maintenance Strategy ......................... 7-19 7.5 Roberts County Well Field – New Transmission Line Strategy .................. 7-24 7.6 CRMWA to Aquifer Storage and Recovery Strategy .................................. 7-29 7.7 South Lubbock Well Field Strategy ............................................................. 7-35 7.8 Brackish Well Field Strategy ....................................................................... 7-41 8.0 Surface Water Strategies ............................................................................................ 8-1 8.1 Developed Water – Supplements to Brazos River Basin ............................... 8-2 8.2 Lake Alan Henry – Infrastructure Expansion Strategy .................................. 8-7 8.3 Jim Bertram Lake 7 ..................................................................................... 8-12 8.4 Post Reservoir .............................................................................................. 8-18 8.5 North Fork Scalping Operation ................................................................... 8-23 Strategic Water Supply Plan February 2013 -ii- Table of Contents Section Page 9.0 Other Strategies Considered ....................................................................................... 9-1 9.1 Jim Bertram Lake 8 ........................................................................................ 9-1 9.2 Jim Bertram Lakes Well Field ....................................................................... 9-3 9.3 Linear Well Field – CRMWA Aqueduct ....................................................... 9-4 9.4 CRMWA Aqueduct Expansion ...................................................................... 9-6 10.0 Supply Strategy Evaluation ...................................................................................... 10-1 10.1 Strategy Scoring Criteria .............................................................................. 10-1 10.2 Individual Strategy Scoring ......................................................................... 10-1 10.3 Strategy Rankings ...................................................................................... 10-19 11.0 Water Supply Packages ............................................................................................ 11-1 11.1 Supply Package 1 – Baseline ...................................................................... 11-2 11.2 Supply Package 2 – LAH Phase 2 Delayed ................................................. 11-6 11.3 Supply Package 3 – RCWF Transmission Delayed ................................... 11-10 11.4 Supply Package 4 – Aggressive Conservation ........................................... 11-14 11.5 Supply Package 5 – Accelerated Growth ................................................... 11-18 11.6 Recommended Package of Strategies ........................................................ 11-23 12.0 Financial Impact ....................................................................................................... 12-1 12.1 Net Present Value Analysis .......................................................................... 12-1 12.2 12-Year Financial Model ............................................................................. 12-5 Strategic Water Supply Plan February 2013 -iii- List of Appendices Appendix A-1 Historic Data for the City of Lubbock A-2 Population and Growth Rate Projections A-3 Per Capita Consumption and Water Demand Projections A-4 Peaking Factor, Average Annual Day, and Peak Day Demand B-1 Current Annual and Peak Day Water Supply Projections B-2 Current Annual Water Demand, Supply, and Net B-3 Current Peak Day Demand, Supply, and Net C-1 Lubbock Water Rate Structure, 1980-2012 C-2 Residential Water Bill Comparison for Major Texas Cities during January 2012 C-3 Public-School Program Lessons C-4 Conservation Calculations: More Stringent Seasonal Water Restrictions Strategy C-5 Conservation Calculations: Increase Non-Essential Water Volume Rates Strategy C-6 Conservation Calculations: Toilet Replacement Rebate for Schools and Universities C-7 Conservation Calculations: Washing Machine Rebate C-8 Conservation Calculations: Residential Showerhead Rebate C-9 Conservation Calculations: Landscape Rebate D-1 Gross Reclaimed Water Projections D-2 Net Reclaimed Water Projections E-1 Present Value Analysis (HDR Engineering, Inc. Memo) F-1 12 Year Financial Water Rate Model: Rate Structure Comparison – Package 1 Strategic