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Water damage categories
Water damage categories
Category 1 - Clean Water
Category 1 - Clean Water
Refers to clean water from a sanitary source. It is in effect “fresh water” and does not pose a substantial risk from ingestion, inhalation, or dermal exposure, e.g., broken water supply lines, tub/sink overflows
Category 2 - Grey Water
Category 2 - Grey Water
Grey water and contains significant contaminants that are unsanitary and can cause discomfort or sickness if contacted by humans. It includes water discharge from dishwashers and washing machines, toilet bowls with urine but not with faeces. This water is likely to contain diluted urine, detergents, or seepage from water storage tanks.
Category 3 - Black Water
Category 3 - Black Water
Black water that is highly contaminated with pathogenic and toxic agents that are harmful to humans, e.g., sewage, flood, ground surface or standing water and toilet backflows that originate from beyond the toilet trap.
Water damage classifications
Water damage classifications
Class 1
Class 1
Water damage refers to a low amount of water discharge onto material that has the least amount of water absorption, generally less than 5%. Once the water is removed there is a low level of moisture left and this simply means that there is a low level of drying needed to remove the remaining moisture. This classification is often relevant to low porosity materials like concrete or tiled floors.
Class 2
Class 2
Water damage refers to a greater amount of water being discharged onto material that has a medium to high rate of porosity. In this instance there is a higher absorption rate of water (up to 40%) into the affected material and the amount of time to extract and dry the material is longer.
Class 3
Class 3
Water damage refers to an even larger amount of water being discharged onto highly porous material. In this instance there is an even higher absorption rate of water (greater than 40%) into the affected material and the amount of time to extract and dry the material is even longer. An example could be excessive water damage from a storm that fills the roof cavity with water, and this results in a soaked interior of walls, floors, and carpets.
Class 4
Class 4
Water damage refers water that is trapped or embedded in building structure and materials. It refers to the most complicated restoration program that will require the most time to make safe, mitigate and restore.
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