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Housing Constraints City of Pleasanton | C-43 the existing groundwater supply by 30 years. This project would rehabilitate existing well facilities, construct a new well facility, and construct a Centralized Treatment Facility for disinfection and PFAS treatment of groundwater before distribution. The preliminary cost estimate of the project is $46 million. Given project cost and other considerations, in September 2022, the City Council authorized staff to proceed with performing a Water Supply Alternatives Study and put the PFAS and Groundwater Wells Rehabilitation Project on hold. The City is also exploring additional alternatives such as: • Drilling of new City wells with or without PFAS treatment, depending on the location of the wells. This would require test drilling and groundwater sampling; • Zone 7 providing 100 percent of all water supply, both in the near term and in the future; and, • Consideration of purchasing water supply from outside Zone 7. This Housing Element contains Program 4.5 to adequately address water supply concerns to support the development of the City’s sites inventory described in Appendix B (Sites Inventory & Methodology). Sewer The City of Pleasanton owns and maintains the pipelines, manholes, force mains, pump stations, and siphons in the local sewer collection system within the City’s limits. Most of the City’s existing collection system is in satisfactory condition and operates in accordance with acceptable industry standards for conveyance of average dry weather flows, peak hourly dry weather flows, and peak wet weather flows during a generally acceptable storm event. The Pleasanton General Plan adopted in 2009 identified the need for future improvements to the existing local collection and pumping system. These improvements included the construction of new or parallel sewers; diversion structures; and modifications, improvements, or complete reconstruction of various pump stations. The General Plan also provides that maintaining and enhancing the existing local sewer collection system will be funded as part of the City’s Capital Improvement Program (CIP), and new sewer lines will be funded and constructed by new development as it occurs. The City’s sewer capacity is sufficient to serve the housing sites identified in Appendix B (Sites Inventory & Methodology); however, under Program 4.4 the City will ensure future sewer infrastructure remains adequate. Dublin-San Ramon Services District (DSRSD) provides Pleasanton’s sewage treatment services. Disposal of treated effluent from DSRSD’s plant to the San Francisco Bay is provided by means of disposal lines managed by LAVWMA (Livermore Amador Valley Water Management Agency), a Joint Powers Authority (JPA) between the City of Pleasanton, the City of Livermore, and DSRSD. A 2017 capacity evaluation of the DSRSD showed that the DSRSD Wastewater Treatment Plant had spare capacity. Recent recycled water projects and conservation efforts for reuse of wastewater within the Tri-Valley service area have helped to reduce impacts on treatment capacity.