2020 Water Conservation Plan
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WATER CONSERVATION PLAN LAKE HAVASU CITY, ARIZONA 2020 UPDATE Approved by Lake Havasu City Council on December 10, 2019 LAKE HAVASU CITY WATER CONSERVATION PLAN TABLE OF CONTENTS 1.0 DESCRIPTION OF DISTRICT ....................................................................................... 1-1 1.1 LOCATION ............................................................................................................... 1-1 1.2 HISTORY .................................................................................................................. 1-1 1.3 SIZE OF POPULATION ............................................................................................... 1-1 1.3.1 Population Projections ................................................................................. 1-3 1.4 NATURAL SETTING................................................................................................... 1-5 1.4.1 Climate/Weather ........................................................................................ 1-5 1.4.2 Topography/Soils ......................................................................................... 1-5 1.5 CULTURAL RESOURCES ............................................................................................ 1-6 1.6 ZONING ................................................................................................................... 1-7 1.6.1 Classifications .............................................................................................. 1-7 1.6.2 Existing Land Uses ........................................................................................ 1-8 1.6.3 Future Land Uses .......................................................................................... 1-8 2.0 WATER SUPPLY ....................................................................................................... 2-1 2.1 WATER SOURCE ...................................................................................................... 2-1 2.1.1 Colorado River Water Diversion Points ......................................................... 2-2 2.1.2 Effluent ........................................................................................................ 2-4 2.2 WATER UTILITY ....................................................................................................... 2-4 2.2.1 Water Production and Treatment ................................................................. 2-4 2.2.2 Distribution .................................................................................................. 2-5 2.2.3 Storage ........................................................................................................ 2-7 2.2.4 Water Measurement/Accounting ................................................................. 2-8 2.2.5 Water Pricing/Billing .................................................................................... 2-8 2.2.6 Operation and Maintenance Program ............................................................ 2-8 2.3 QUALITY OF WATER SOURCES ............................................................................... 2-14 2.3.1 Groundwater ............................................................................................. 2-14 2.3.2 Surface Water ............................................................................................ 2-16 2.3.2.1 Inorganic Constituents .................................................................... 2-17 2.3.2.2 Organic Constituents ....................................................................... 2-17 2.3.2.3 Microbiological Parameters ............................................................. 2-17 3.0 HISTORIC AND PROJECTED WATER DEMANDS AND WATER SYSTEM DEFICIENCIES ............................................................................................................. 3-1 3.1 WATER DEMAND ..................................................................................................... 3-1 3.1.1 Overall 2019-20 Water Budget Summary ...................................................... 3-7 3.1.2. Water Use Classifications ............................................................................. 3-7 3.2 DEFICIENCIES ........................................................................................................... 3-7 3.2.1 Supply and Treatment .................................................................................. 3-8 3.2.2 Storage ........................................................................................................ 3-8 3.2.3 Distribution and Metering ............................................................................ 3-8 i LAKE HAVASU CITY WATER CONSERVATION PLAN TABLE OF CONTENTS (Continued) 4.0 COLORADO RIVER SHORTAGES ................................................................................ 4-1 5.0 EFFLUENT REUSE ........................................................................................................... 5-1 5.1 EFFLUENT REUSE ........................................................................................................... 5-1 5.2 EXCESS EFFLUENT STORAGE – REUSE ISSUES ................................................................. 5-6 6.0 EXISTING LAKE HAVASU CITY WATER CONSERVATION ORDINANCES AND RESOLUTIONS ....................................................................................................... 6-1 6.1 GENERAL ...................................................................................................................... 6-1 6.2 WATER CONSERVATION ORDINANCES .......................................................................... 6-1 6.3 CITY RESOLUTIONS ....................................................................................................... 6-3 6.3.1 Modifications to the City Code .......................................................................... 6-4 7.0 CURRENT WATER CONSERVATION ACTIVITIES INCLUDING CRITICAL MEASURES .............................................................................................................. 7-1 7.1 WATER CONSERVATION SPECIALIST ......................................................................... 7-1 7.2 EFFLUENT IRRIGATION TO SUPPLANT POTABLE WATER IRRIGATION ........................ 7-3 7.3 DISTRIBUTION SYSTEM AUDIT, LEAK DETECTION AND SYSTEM UPGRADES PROGRAM ............................................................................................................... 7-3 7.4 CLOSELY MONITOR UNMETERED WATER USE .......................................................... 7-4 7.5 GOVERNMENT ROLE MODEL ................................................................................... 7-4 7.6 MEASUREMENT AND ACCOUNTING ......................................................................... 7-4 7.7 WATER PRICING STRUCTURE ................................................................................... 7-5 8.0 WATER SUPPLY STAGES AND WATER SHORTAGE RESPONSE PLAN ........................... 8-1 8.1 INTRODUCTION ....................................................................................................... 8-1 8.1.1 Strategies to Ameliorate Water Shortages .................................................... 8-1 8.1.2 About Implementing Water Rationing Allocations ........................................ 8-5 8.1.3 Water Rationing Allocation Caveats .............................................................. 8-7 8.2 SHORTAGE RESPONSE STRATEGIES IMPLEMENTATION EXAMPLES ........................... 8-8 8.2.1 Paper Shortage Conditions ........................................................................... 8-9 8.3 PROJECTED WATER SAVINGS ................................................................................... 8-9 8.4 NON-SHORTAGE EMERGENCY SITUATIONS ............................................................ 8-12 9.0 2020 – 2025 WATER CONSERVATION ACTIVITIES ..................................................... 9-1 9.1 MEASURES THAT WILL BE IMPLEMENTED WITHIN THE 5 YEAR PERIOD .................... 9-1 9.1.1 Water Conservation Specialist Proposed Programs ....................................... 9-1 9.1.2 Conversion of Potable Water Irrigation to Effluent ....................................... 9-2 9.1.3 Other Measures Scheduled to Implement Over the Next 5 Years .................. 9-3 ii LAKE HAVASU CITY WATER CONSERVATION PLAN TABLE OF CONTENTS (Continued) 9.2 WATER CONSERVATION MEASURES UNDER CONSIDERATION ...................................... 9-6 9.2.1 Future Wastewater Recycling ....................................................................... 9-6 9.2.2 Water Meter Technological Upgrades ........................................................... 9-7 9.2.3 Incentivizing Graywater Systems in New Developments ............................... 9-8 9.2.4 Rainwater Harvesting ................................................................................... 9-8 9.2.5 Green Infrastructure and Native Plant Community Demonstration Park........ 9-9 10.0 PROJECTED RESULTS OF SELECTED MEASURES ....................................................... 10-1 10.1 PLAN SUMMARY AND MONITORING ..................................................................... 10-1 10.2 PROJECTED RESULTS .............................................................................................. 10-4 11.0 ENVIRONMENTAL REVIEW..................................................................................... 11-1 12.0 IMPLEMENTATION SCHEDULE AND BUDGET .........................................................