Direct Nonpotable Water Reuse Feasibility Study Public Meeting October 2011
What is “Direct Nonpotable Water Reuse” (and why are we talking about it)? Municipal wastewater treated to standards that allow for its safe reuse. A “drought-proof” water resource The only source of water that automatically increases with economic and population growth
“Currently, 190 utilities in 115 Texas counties report some form of water reuse. The total amount of municipal wastewater reuse reported for 1998 was approximately 160 MGD (Million gallons per day), and golf course irrigation, manufacturing, and cooling towers are the primary users.” Water Reuse in Texas Texas Water Development Board Counties with the highest amounts of municipal reuse in Texas CountyMunicipal Reuse (MGD) Bexar37.8 Collin29.0 Potter13.9 Midland10.5 Travis9.4
Regional Water Planning Groups
2060 Recommended Water Management Strategies ‐ Relative Volumes Water for Texas: Summary of the 2011 Regional Water Plans
South Central Texas Regional Water Planning Group Municipal water conservation water management strategy was based on water conservation Best Management Practices (BMPs) for municipal water users, as included in the Water Conservation Implementation Task Force November 2004 Report to the 79th Texas Legislature. The list of Municipal Water Conservation BMPs included: 9. Landscape Irrigation Conservation and Incentives; 10. Water-Wise Landscape Design and Conversion Programs; 11. Athletic Field Conservation; 12. Golf Course Conservation; 16. Reuse of Reclaimed Water; 20. Park Conservation; 2006 South Central Texas Regional Water Plan Volume I — January 2006 Section 6 - Water Conservation and Drought Management Recommendations Management Recommendations
South Central Texas Regional Water Planning Group 2011 South Central Texas Regional Water Plan Volume II - September 2010
Population Water for Texas: Summary of the 2011 Regional Water Plans
Population 2011 South Central Texas Regional Water Plan City of Kyle
Population 2011 South Central Texas Regional Water Plan (adjusted for 2010 Census results) City of Kyle
Population 2010 Kyle Comprehensive Plan
Texas Reclaimed Water Regulations Texas Commission on Environmental Quality Chapter Use of Reclaimed Water QUALITY CRITERIA AND SPECIFIC USES FOR RECLAIMED WATER Type I Potential Uses Irrigation of landscaping, public parks, golf courses, and athletic fields Fire protection Irrigation of food crops and pastures for milking animals Toilet or urinal flush water Type II Potential Uses Irrigation of sod farms, silviculture, limited access rights-of-way Irrigation of animal feed crops and food crops without contact with edible part or with pasteurization Soil compaction or dust control Cooling tower makeup water
Texas Reclaimed Water Regulations Texas Commission on Environmental Quality Chapter Use of Reclaimed Water QUALITY CRITERIA AND SPECIFIC USES FOR RECLAIMED WATER Type IType II (pond system) Quality Standards (30 day avg.) BOD 5 /CBOD 5 = 5 mg/l Turbidity = 3 NTU Fecal coliform <20 or <75 CFU/100 mL (single grab sample) BOD 5 = 20 mg/l CBOD 5 = 15 mg/l Fecal coliform <200 or <800 CFU/100 mL (single grab sample) BOD 5 = 30 mg/l Fecal coliform <200 or <800 CFU/100 mL (single grab sample) Sampling/Analysis Frequency 2 X per week1 X per week
Study Objectives How much water is available for reuse? How much water is needed for Plum Creek GC? How much water could be used to sustain city parks and medians? Are there other potential users and uses? What are the environmental considerations? What are the options for delivering reclaimed water? What will it cost to build the infrastructure? What will the water cost? Is it affordable?
How much is available for reuse?
Delivery Options Kyle Wastewater Treatment Plant 10/15/3 10/15/3 Pipeline routes Pipeline routes Storage options Storage options Additional Treatment for Additional Treatment for Type 1 Type 1 Satellite (Scalping) Plants Interceptors Flow
What’s Next? Public Meeting Draft Report SubmittalProject Completion
Contact Stephen M. Jenkins, P.E. (830)