Res 2016-137/approving a Water Master Plan to guide the future maintenance and extension of the City’s Water Infrastructure

Home Browse Search

Alan Plummer Associates, Inc. Water Master Plan Update 2016 5 The Water Mater Plan scope was limited to evaluating the ability of the system to distribute water from its source to the points of demand. As part of this scope, the water supply source capacities were compared to the TCEQ requirements based on a peak delivery scenario. The existing water sources have the capacity to meet the alternative demand requirements approved by TCEQ throughout the study period. However, another consideration is the overall volume of water needed on an annual basis. Wells are typically not operated 24 hours per day, seven days a week due to aquifer conditions. 5.1 CURRENT WATER SOURCES The majority of the water in the distribution system is surface water treated at the SWTP by the Guadalupe-Blanco River Authority (GBRA). The surface water comes from the Guadalupe River via a raw water pipeline from the intake on a canal extending from Lake Dunlap. Groundwater extracted at each of the five well sites provides additional supply as needed. In 2014, groundwater made up less than 10 percent of the total water production. The City operates and maintains six wells as follows: 1. Two wells at the Spring Lake Pump Station 2. One well each at the Comanche, McCarty, Soyars, and Kingswood facilities In addition, two wells at the Oakridge Pump Station have been recently decommissioned. At least one of them may be able to be restarted in an emergency situation. 5.2 FUTURE NEEDS The City has completed separate studies to evaluate the overall volumes of water needed to meet the demands of their customers into the future. As a result of these studies, the City is a participant in the Hays-Caldwell Public Utility Authority (HCPUA). The HCPUA is currently planning for the implementation of a large project to bring groundwater into the area from Gonzalez County. For modeling purposes, any HCPUA water obtained by the City during the planning horizon will be assumed to be delivered as treated water to the SWTP clearwells. No raw water transmission facilities have been included in the distribution system model. 5-1 m:\projects\0600\022-01\doc\report\draft\draftmasterplan-v15_hef.docx