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CMP Part 4C. Water Supply <br /> 11 Analysis of pressures throughout the water system. <br /> • Analysis of available fire flows throughout the system. <br /> 12 system. <br /> Analysis of Existing Water System <br /> Existing Water Pressure. Average Day(AD)pressures in the existing system range <br /> from 50 to 78 psi. These pressures are within acceptable standards. <br /> According to Ten States Standards for Water Works (2012), an industry standard <br /> that the Minnesota Department of Health has adopted, pressures in the system <br /> should meet the following: <br /> "The minimum working pressure in the distribution system should be 35 psi (240 <br /> kPa) and the normal working pressure should be approximately 60 to 80 psi (410 - <br /> 550 kPa). When static pressures exceed 100 psi (690 kPa), pressure reducing <br /> devices shall be provided on mains or as part of the meter setting on individual <br /> service lines in the distribution system." <br /> Peak Hour (PH) pressures, which represent some of the highest non-emergency <br /> demands that a system will require, range from 44 to 73 psi, which is again within <br /> acceptable standards. Therefore, no deficiencies were identified during computer <br /> system analysis. <br /> City of Orono Community Management Plan 2020-2040 Part 4C, Page 15 <br />