What are the categories of water loss?

Per IICRC

Category 1- Category 1 water originates from a sanitary source water source and does not pose substantial risk from dermal, ingestion or inhalation exposure. Examples of category 1 water sources can include, but are not limited to: broken eater supply lines; tub or sink overflows with no contaminants; appliance malfunctions involving water supply lines; melting ice or snow; falling rainwater; broken toilet tanks, and toilet bowls that do not contain contaminants or additives. However, once clean water leaves the exit point, it may not remain clean once it contacts other surfaces or materials.

The cleanliness of Category 1 water may deteriorate to Category 2 or 3 for many reasons, including but not limited to: contact with building materials, systems and contents; mixing with soils and other contaminates. Some factors which influence the potential organic and inorganic load in a structure include the age and history of the structure, previous water losses, general housekeeping, the type of use of the structure (e.g/ nursing home, hospital, day care, warehouse, veterinary clinic), and elapsed time or elevated temperature. Odors can indicate that Category 1 has deteriorated.

Next;   Category 2   or Class 1 water