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Section 6 2025 Urban Water Management Plan <br />Water Supply Characterization City of Pleasanton <br /> Public Draft | May 2026 <br /> 6-19 EKI Environment & Water, Inc. <br />• Disinfection using ultraviolet (UV) light prior to disposal <br />The disinfected tertiary-treated effluent satisfies California Title 22 requirements for unrestricted water <br />reuse and is used by the City for landscape irrigation. The LWRP treats an average of 2.2 MGD to tertiary <br />standards. While the tertiary filtration capacity of the LWRP is approximately 10 MGD, the overall recycled <br />water production capacity is limited by the UV disinfection capacity to 6 MGD. <br />6.5.2.3 Wastewater Collection, Treatment, and Discharge Within Service Area <br />The volume of wastewater collected and treated from Pleasanton’s service area is shown in Table 6-3. <br />The reported volumes sent to DSRSD’s RWTF derive from DSRSD’s influent meters, and the volumes sent <br />to the LWRP are based on estimates from the City of Livermore. Table 6-4 summarizes the service area <br />wastewater treatment and discharge volumes. <br />Table 6-3 Wastewater Collected Within Service Area in 2025 (DWR Table 6-2) <br />Wastewater Collection Recipient of Collected <br />Wastewater <br />Name of Wastewater <br />Collection Agency <br />Wastewater <br />Volume <br />Metered or <br />Estimated? <br />(OPTIONAL) <br />Volume of Wastewater <br />Collected from UWMP <br />Service Area 2025 <br />Name of <br />Wastewater <br />Treatment Plant <br />(WWTP) and <br />Place ID Number <br />Is WWTP <br />Located <br />Within <br />UWMP <br />Area? (AF) <br />City of Pleasanton Metered 6,442 DSRSD RWTF, <br />Place ID 220792 Yes <br />City of Pleasanton (Ruby <br />Hills Development) Estimated 280 LWRP, Place ID <br />237195 No <br />Total Wastewater Received from UWMP <br />Service Area in 2025: 6,722 <br />Wastewater treated at DSRSD’s RWTF, which is located in Pleasanton’s service area, includes wastewater <br />that originated in Pleasanton and DSRSD’s wastewater service area (Dublin and south San Ramon). <br />Table 6-4 identifies these volumes for 2025, along with the amount of recycled water from DSRSD’s RWTF <br />used in the Pleasanton’s service area. This includes recycled water delivered to Pleasanton’s distribution <br />system and recycled water used for landscape irrigation at DSRSD’s RWTF. <br />Though Pleasanton received approximately 90 AF of recycled water supplies from the LWRP in 2025, this <br />value is not included in Table 6-4 because the LWRP is not located in Pleasanton’s service area. <br />