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<br />the plant to operate at 21 MGD in order to accommodate additional users north of San Marcos. <br />The facility currently produces about 4.5 million gallons of potable water per day for San <br />Marcos, supplying about seventy percent of the City's water needs. <br />The City maintains about 233 miles of water pipelines, ranging in size from 1.5 inch <br />diameter water lines to 24 inch diameter mains. Seven storage tanl(s provide a combined storage <br />capacity of 3.9 million gallons. <br />The City maintains approximately 185 miles of wastewater collection mains, with 46 lift <br />stations. The mains deliver wastewater to a 9 MGD wastewater treatment plant. Because much <br />of the treated wastewater is discharged into the San Marcos River, the City is required to meet <br />one of the most rigorous discharge permits in Texas. The wastewater receives advanced tertiary <br />treatment in order to meet the 5-5-6-2-1 treatment quality standard. The plant is currently <br />operated by Operation Management International, Inc (OMI). <br /> <br />3.0 Customer Profile <br /> <br />The City of San Marcos Water/Wastewater Utility currently provides water service to a <br />population of 51,459 residents. The population is projected to more than double by 2030, and to <br />reach almost 165,000 by 2050 (Figure 2). <br /> <br /> 200000 <br /> 180000 <br /> 160000 <br /> 140000 <br />I: 120000 <br />0 <br />; <br />co 100000 <br />~ <br />c. <br />0 80000 <br />c.. <br /> 60000 <br /> 40000 ~ <br /> <br />20000 <br /> <br />o <br />2000 2005 2010 2015 2020 2025 2030 2035 2040 2045 2050 2055 2060 <br />Year <br /> <br />Figure 2: City of San Marcos population projections. <br /> <br />3 <br />