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Anoka County Multi-Jurisdictional All Hazards Mitigation Plan 90 churches, manufacturing facilities, warehouses, and multiple-story buildings. Each of these locations is a prime target for urban fire events. 4.2.2.10 Utility Failure – Power – Water Contamination A major electrical power failure is defined as a failure of the electrical distribution system that will exceed twenty-four hours in duration and effect greater than 33% of the geographical area of the county. Electrical distribution systems can be interrupted for a number of reasons, but those that have historically been the main cause are high winds, severe thunderstorms and winter storms. A prolonged major electrical distribution system failure during the middle of winter, accompanied by very cold temperatures, can have dramatic effects on a population Drinking water comes from surface water and from ground water. Large-scale water supply systems tend to rely on surface water resources such as rivers, lakes, and reservoirs. Smaller water systems tend to use ground water pumped from wells that are drilled into aquifers, geologic formations that contain water. Microbiological and chemical contaminants can enter water supplies. Chemicals can each through soils from leaking underground storage tanks, feedlots and waste disposal sites. Human wastes and pesticides can also be carried to lakes and streams during heavy rains or snow melt. 4.3 Hazard Analysis The Hazard Analysis section focuses on those hazards initially identified in the Hazard Identification section and that are of particular concern and relevance to Anoka County. This section provides specific historical occurrences in Anoka County and identifies the future potential for a hazard event to occur. This includes identifying location and spatial extent of the event and best available data regarding the impact on the county. The table below is a comprehensive listing of specific hazards that are identified by the State of Minnesota Hazard Mitigation Plan to potentially threaten Minnesota communities. All of these hazards were initially considered for relevance in the hazard mitigation planning process. The table below indicates the specific hazard types identified by Anoka County for further study and analysis. 44 CFR Requirement 44 CFR Part 201.6(c)(2): The plan shall include a risk assessment that provides the factual basis for activities proposed in the strategy to reduce losses from identified hazards. Local risk assessments must provide sufficient information to enable the jurisdiction to identify and prioritize appropriate mitigation actions to reduce losses from identified hazards.