Res 2021-134/approving the submittal of the amended 2019 revised Water Conservation and Drought Response Plan to the Texas Water Development Board

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acre-feet of Edwards Aquifer groundwater per year. These groundwater withdrawals may be reduced by up to 44% when aquifer levels fall below certain triggers, resulting in a firm groundwater supply of 3,043 acre-feet per year. The agencies that govern these resources require preparation and implementation of effective water conservation plans. In addition to providing for the needs of a rapidly growing population, this Plan fulfills the requirements of the agencies that govern use of state waters. Section 13.146 of the Texas Water Code requires retail public utilities that provides potable water service to 3,300 connection or more to submit a water conservation plan to the Texas Water Development Board (TWDB). Texas Administrative Code (TAC) 31, Chapter 363 requires that entities applying for or receiving financial assistance of more than $500,000 develop, submit and implement a water conservation plan. TAC 30, Chapter 288, enforced by the Texas Commission on Environmental Quality (TCEQ), requires surface water right holders to develop, submit and implement water conservation plans. The Edwards Aquifer Authority (EAA) requires groundwater permit holders to implement water conservation plans and to document their conservation efforts. This Plan is applicable to all persons, customers, and properties located within the City of San Marcos Water/Wastewater Utility service area and to all persons, customers and properties using water provided by the City of San Marcos Water/Wastewater Utility. The Plan is also applicable to wholesale water customers. Every wholesale water supply contract that the City enters into requires that the wholesale customer adopt and implement a Water Conservation Plan that conforms to the TWDBs requirements, and submit it to the TWDB. 2.0 System Profile The City of San Marcos Water/Wastewater Utility is comprised of several components including groundwater pumping stations, a surface water production and treatment system, a water distribution system, a wastewater collection system, and a wastewater treatment facility. Over 75 City employees and contractors work to maintain these systems. The groundwater system is comprised of six active Edwards Aquifer wells, which produce an average of 1.75 MGD, providing about twenty percent of the City's annual water usage.