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Category 1 (Clean Water):
This is defined as water that originates from a sanitary water source and does not pose substantial risk from dermal, ingestion, or inhalation exposure.
Sources of water: Supply lines, water heater bursts, falling rain water, ice maker lines, etc
Although the water does not pose a danger to the occupant, ESR always recommends a rapid clean up to prevent secondary damages from occurring.
Category 2 (Gray Water):
This is defined as water that contains significant contamination and has the potential to cause discomfort or sickness if contacted or consumed by humans. Category 2 losses can contain potentially unsafe levels of microorganisms, or nutrients for microorganisms.
Sources of water: Drain lines from washing machines or dishwashers, toilet overflows (before the trap), broken aquariums, waterbed leaks, etc.
Gray water losses can pose a hazardous situation to occupants. ESR recommends only trained, certified technicians handle this type of loss.
Category 3 (Black Water):
This is defined as water that is grossly contaminated and can contain pathogenic, toxigenic, or other harmful agents.
Sources of water: Sewage, toilet backflows that originate behind the trap, rising river water, etc.
Category 3 water can pose substantial heath risks to the occupant. ESR recommends using only technicians who have been certified and trained in how to perform this type of mitigation. In a sewage loss, there can up be to 120 different viruses and bacteria in the water.
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