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2 WATER DEMAND <br />2.1 ZEPHYRHILLS UTILITY SERVICE AREA <br />Figure 1 shows the City's USA. The USA covers approximately 19.7 square miles and <br />encompasses most of the City's incorporated area and parts of unincorporated Pasco <br />County. Pasco County Utilities serves the portion of the City's incorporated area outside the <br />USA. <br />2.2 USA HISTORICAL WATER DEMAND -ZEPHYRHILLS USA <br />In 2020, the City renewed Water Use Permit (WUP) Number 6040. The WUP allows an <br />annual average withdrawal of 3.3084 million gallons per day (MGD) and a peak month <br />withdrawal of 3.6723 MGD. The WUP quantities were based on a per-capita rate of <br />87 gallons per capita daily (gpcd) and a peak factor of 1.11. The calculated per-capita rate <br />of 87 gpcd is based on 2014 through 2018 water use and is less than the per-capita rate of <br />103 gpcd used in the previous WUP. <br />Table 1 presents the historical water demands from the City's Public Supply Annual Reports <br />(PSARs). The recent 2021 average annual daily demand (AADD) was 2.383 MGD. The <br />corresponding average per capita use was 83 gallons per day (gpd). <br />Table 1 <br />PSARs <br />2016 <br />2017 <br />2018 <br />2019 <br />2020 <br />2021 <br />Historical Water Demands <br />Population <br />27,880 <br />27,456 <br />27,734 <br />27,824 <br />28,584 <br />29,117 <br />Dwelling <br />Units <br />13,304 <br />13,199 <br />13,346 <br />13,394 <br />13,768 <br />14,062 <br />Total <br />Water Use <br />(MGD) <br />2.341 <br />2.416 <br />2.340 <br />2.294 <br />2.383 <br />2.406 <br />gpcd <br />84 <br />88 <br />84 <br />82 <br />83 <br />83 <br />gpd/ <br />Dwelling <br />Unit <br />176 <br />183 <br />175 <br />171 <br />173 <br />171 <br />Persons/ <br />Dwelling <br />Unit <br />2.1 <br />2.1 <br />2.1 <br />2.1 <br />2.1 <br />2.1 <br />2.3 2020 REGIONAL WATER SUPPLY PROJECTIONS <br />Table 2 shows the 2020 RWSP estimated Public Supply Water Demand Projections for the <br />City of Zephyrhills. The RWSP's 2020 projected population of 29,746 is 1,162 persons more <br />than the City's reported existing served population. The USA service population is expected <br />to reach 36,534 persons by 2040. The increase (6,788 persons) is expected over the 20- <br />year planning period (2020 through 2040) through infill/redevelopment, rehabilitation of <br />vacant dwellings, and extension/connection of City utilities to presently unserved properties <br />(i.e., well users and new dwelling units). <br />26110-046-01 <br />February 2023 <br />2-1 <br />Water Demand