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CMP Part 4B. Sanitary Sewer Plan <br /> <br /> <br />City of Orono Community Management Plan 2020-2040 Part 4B, Page 7 <br />Population <br />The Metropolitan Council publishes population and sewer usage forecasts for each city in the <br />Metropolitan Area. MCES use these growth and wastewater flow forecasts to plan future <br />interceptor and treatment works to serve communities. The forecast data in the table below is from <br />the Metropolitan Council’s Local Planning Handbook Community Page for Orono and includes <br />both total and sewered population, households, and employment. <br /> <br />Table 4B-4: Orono Population and Households 1970 - 2040 <br />(Sewered and Unsewered Forecasts) <br />Population <br />Year 1970 1980 1990 2000 2010 2016 2020 2030 2040 <br />Sewered -- -- -- -- 4,429 -- 5,150 6,170 6,740 <br />Unsewered -- -- -- -- 3,008 -- 2,950 2,630 2,760 <br />Total City 6,787 6,845 7,285 7,538 7,437 7,691 8,100 8,800 9,500 <br />Household <br />Year 1970 1980 1990 2000 2010 2016 2020 2030 2040 <br />Sewered -- -- -- -- 1,780 <br />2,253 <br />2,105 2,455 2,785 <br />Unsewered -- -- -- -- 1046 784 1,095 1,105 1,115 <br />Total City 2,146 2,291 2,613 2,766 2,826 3,037 3,200 3,560 3,900 <br />Persons/HH 3.16 2.99 2.79 2.73 2.63 2.53 2.53 2.47 2.44 <br />Employment <br /> 500 809 980 951 1562 1579 1700 1780 1800 <br />Source: Metropolitan Council <br /> <br />Wastewater Flows <br />All of the existing and anticipated sewage flow from the City of Orono is treated at the Blue Lake <br />WWTP. The treatment plan currently processes 26 Million Gallons Per day and has a planned <br />capacity of 40 million gallons per day by 2040 (Council, 2016). The 1980 CMP indicated an <br />ultimate interceptor design capacity assigned to Orono of 3,025 units based on a flow of 368 GPD <br />per unit (115 gal/person/day x 3.2 persons/household) totaling 1.14 mgd or 416 million gallons <br />per year (MGY). Under current projections which include land use changes proposed in the Land <br />Use Plan of this 2018-2040 CMP, potential Orono flow rates will slightly exceed the annual flows <br />forecasted by Met Council through 2040 but remain below the ultimate design capacity. The <br />paragraphs and tables below depict the MCES and Orono projections. <br /> <br />MCES Projections <br />Table 4B-5 below lists projected total average wastewater flow for Orono. <br />