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Water Supply Plans, as required by the Department of Natural Resources and the Metropolitan Council, must include procedures to address emergencies and the sudden loss of water due to line breaks, power failures, sabotage, etc. During periods of limited water supply, public water suppliers are required to allocate water based on the priorities established in Minnesota Statutes 103G.261. These priorities are defined as follows: • The first priority water use category includes domestic water supply only and excludes industrial and commercial uses of municipal water supply. The first priority also includes uses for power production that meet contingency requirements. Domestic use is defined by MN Rules 6115.0630, Subp. 9, as use for general household purposes for human needs such as cooking, cleaning, drinking, washing, and waste disposal, and uses for onfarm livestock watering excluding commercial livestock operations which use more than 10,000 gallons per day or one million gallons per year. • The second priority water use category includes uses involving consumption of less than 10,000 gallons per day. • The third priority water use category includes uses for agricultural irrigation and processing of agricultural products. • The fourth priority water use category includes uses for power production in excess of the use provided for in the contingency plan under first priority. • The fifth priority water use category includes uses, other than agricultural irrigation, processing of agricultural products, and power production. • The sixth priority water use category includes nonessential uses. These uses are defined by Minnesota Statutes 103G.291 as lawn sprinkling, vehicle washing, golf course and park irrigation, and other nonessential uses. Triggers for Allocation and Demand Reduction J-!�;GO 2040 COMPREHENSIVE PLAN UPDATE Water used for human needs at hospitals, nursing homes and similar types of facilities are designated as a high priority to be maintained in an emergency. Local allocation priorities will address water used for human needs at other types of facilities such as hotels, office buildings, and manufacturing plants. The volume of water and other types of water uses at these facilities will be carefully considered. After reviewing the data, common sense will dictate local allocation priorities to protect domestic requirements over certain types of economic needs. Table 9-10 lists the priority ranking, average day demand and demand reduction potential for each customer category in the City. Table 9-10 Water Use Priorities Residential 1 720,000 - Institutional 2 0 Commercial 3 36,600 Industrial 4 22,200 Agricultural/Irrigation 5 219,000 Wholesale 7 0 Non -Essential 6 N/A Total NA N/A 245,000* GPD — Gallons per Day *It is estimated that the City's use increases by approximately 490,000 gallons per day in the summer. Therefore, on average, the short-term reduction potential is 245,000 gallons per day (half of the increased summer use). It should be noted that this reduction potential will be significantly lower in the winter months. DRAFT Dec14-17 for review only COMPREHENSIVE WATER SUPPLY 232 AND DISTRIBUITION PLAN