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Estimated Future Potable Water Demand, City of Zephyrhills USATable 2 <br />Year <br />Water Service Area Population Served1 <br />Estimated gpcd1 <br />Projected Demand (MGD)1 <br />2020 2025 2030 <br />29,746 32,056 33,904 <br />98 98 98 <br />2.921 3.148 3.329 <br />2035 2040 <br />35,436 36,531 <br />98 98 <br />3.480 3.587 <br />Notes: 1 Growth rate in 2020 RWSP (addition of 6,788 persons by 2040). <br />The RWSP projects a 0.666-MGD increase in water demand within the USA over the <br />20-year planning period with projected water demands reaching 3.587 MGD by 2040 The <br />RWSP's projected demand assumes 98 gpcd for the USA, which is based on the average <br />2011 through 2015 gpcd. The 2020-projected demand is 2.921 MGD, which is 0.269 MGD <br />more than that reported on the PSAR (Table 1) and can be attributed to the lower <br />population (1,162 less) and a lower (83) gpcd. <br />2.4 AVERAGE WATER GPCD FROM 2011 TO 2015 REPORTED USE <br />2.4.1 FUNCTIONAL POPULATION PROJECTIONS <br />SWFWMD provides functional population projections on its website under Section C-2 - <br />Geographic Information System (GIS) Model Parcel-Level Population Projections. The <br />database provides parcel-level projections of seasonal, tourist, and net commuter <br />populations through 2045. Table 3 shows the total function population for the parcels within <br />the City's USA in the February 2022 GIS model parcel-level population database for Pasco <br />County. Projected water demand assumes 87 gpcd based on the compliance per capita limit <br />in the City's WUP. <br />SWFWMD Parcel-Level Population ProjectionsTable 3 <br />Year <br />USA Population1 <br />Estimated GPCD2 <br />Projected Demand <br />(MGD)2 <br />Notes: ^ Population projections in the database adjusted using the 2020 PSAR population. <br />2 Compliance per capita in 2020 WUP. <br />2020 <br />28,584 <br />87 <br />2.487 <br />2025 <br />30,446 <br />87 <br />2.649 <br />2030 <br />31,698 <br />87 <br />2.758 <br />2035 <br />32,668 <br />87 <br />2.842 <br />2040 <br />33,351 <br />87 <br />2.902 <br />2045 <br />33,841 <br />87 <br />2.944 <br />2.4.2 PLANNED RESIDENTIAL DEVELOPMENTS <br />The City Utilities and Planning Departments provided data regarding residential <br />developments. Table 4 identifies City-approved developments that will affect the number of <br />residents in the USA over the 2040 Work Plan period. These developments have approved <br />site plans and are already under construction or expected to begin construction within the <br />next year. Approved developments identified by the City include approximately <br />2,718 dwelling units. Historically, the City has assumed an average of 2.1 persons per unit; <br />however, many of the approved new developments are three- to five-bedroom dwelling <br />units and a higher number of persons per unit is expected. Table 4 assumes an average of 3 <br />persons per unit for three-to-five-bedroom dwelling units. <br />26110-046-01 <br />February 2023 <br />2-3 <br />Water Demand