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City of Pleasanton <br />Sewer Rate Study Report <br /> <br />Water Resources Economics <br />44 <br />Estimated annual wastewater flow is calculated by converting indoor water consumption in gpcd <br />to ccf per capita per year and multiplying consumption by household size and units (Table 2-3) for <br />each customer class. Accounts for each customer class are equal to units for all classes except <br />for Condo and Multi-Family whose accounts were provided by staff 11. <br /> <br />Non-Residential wastewater flow estimates are based on actual FY 2025 water consumption and <br />accounts provided by staff. Commercial classes are allocated to their most closely associated <br />DSRSD strength class based on review of FY 2025 billing data. <br /> <br />The applied percentage reflects the portion of estimated wastewater flow included in the cost-of- <br />service analysis. A 100% factor is applied to all customer classes served directly by the City’s <br />sewer collection system. For customers in the Castlewood Service Area, a 7.785% factor is <br />applied to reflect Castlewood’s proportionate use of the City’s system. The applied wastewater <br />flow, accounts, and units are calculated by multiplying wastewater flow, accounts and units by <br />the applied percentage for each customer class. <br /> <br /> <br />11 One Multi-Family or Condo meter may serve multiple units (For example, one apartment building has one account <br />and serves four units). <br />Page 196 of 923