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5.0 Meetings The Metropolitan Council and Ban- staff met with representatives of the six cities at the kickoff of this project and to review the draft report. City staff and Metropolitan Council staff were given the opportunity to review and comment on the draft report in September 2014 before the final report was completed. 3.2 Assumptions To analyze the data and prepare feasibility study recommendations, several assumptions had to be made as part of the process. Below is a list of assumptions made in the creation of this report. These assumptions are based on the 2012 Great Lakes Upper Mississippi River Board Recommended Standards for Water Works (Ten States Standards'), and our engineering judgment and experience working with municipal water supply systems. Assumptions made in this report are as follows: 1.0 The existing system is assumed to be the year 2013 water system, and the future system is assumed to be the year 2030 water system. 2.0 Population estimates were taken from the existing city comprehensive plans, which detailed infrastructure needs through 2030, and from the Metropolitan Council's "Thrive NiSP 2040". Comprehensive Plan population projections for 2030 were adjusted to match the Metropolitan Council's 2030 estimate if there was a large discrepancy between the two projections. 3.0 Future development boundaries, land use, and infrastructure locations were taken from the existing city 2030 Comprehensive Plans. 4.0 Per capita water use (average and peak) for each city was estimated based on the average per capita use for the most recent 5 years (2009-2013) of data available. For cities where all five years of data was not available, an average was computed from what data was available from 2009-2013. 5.0 There is no upward or downward trend in per capita water use. Future per capita water use is assumed to reflect current historical per capita water use. Future studies may want to look at the emerging trends that show some reduction in per capita use for many cities across the region. 6.0 There is no upward or downward trend in percent of water unaccounted for. The percent of water unaccounted for is calculated as the average of the most recent five years of data reported in Minnesota Department of Natural Resources (DNR) water use reports. 7.0 The population served by cities' water supply systems is based on city reported data and historical patterns. No future assumptions are made for increased or decreased service areas beyond what cities have projected in their comprehensive plans. 8.0 The City of Columbus's existing water demand is generated primarily by industrial and commercial users. Therefore, per capita water use is much higher than the other cities, and is unlikely to reflect demand added by future residential customers. Future demand for the City of Great Lakes - Upper Mississippi River Board of State and Provincial Public Health and Environmental Managers. 2012. Recommended Standards for Water Works. Albany: Health Research Inc., 2012. Joint Water utility Feasibility Study 11