These categories designate the TYPE of water that is involved in the loss!!!

Category 1:
Often referred to as “clean” water
A “clean” water source is one that does not pose substantial harm to humans. Examples of clean water sources may include, but are not limited to: broken water supply lines, tub or sink overflows with no contaminants, appliance malfunctions involving water supply lines, melting ice or falling rainwater – not that which flows over the soil or through multiple structural components- broken toilet tanks, and even toilet bowls that do not contain contaminants or additives. Once a clean water source contacts other surfaces and materials, its condition may change as it dissolves or mixes with soils and other contaminants, and as time elapses.

Category 2:
Often referred to as “gray” water
Unsanitary or “gray” water contains some degree of contamination. Potentially, it could cause substantial discomfort or sickness if consumed by humans, and it carries microorganisms or nutrients for microorganisms. Category 2 (gray) water examples may include, but are not limited to: discharge from dishwashers or washing machines, overflows from washing machines, overflows of toilet bowls with some urine (no feces), broken aquariums, and punctured water beds. All of these may contain chemicals or biocontaminants (fungal, bacterial, viral, algae), or other forms of contamination. Time and temperature aggravate Category 2 (gray) water contamination significantly. Water in flooded structures that remains untreated longer than 48 hours can change from Category 2 (gray) to Category 3 (black).

Category 3:
Often referred to as “black” water
Category 3 “black” water always contains pathogenic agents. Grossly unsanitary, “black” water sources are those that arise from sewage or other contaminated water entering a structure. Sewage contains the expected urine and feces; but it could also contain dangerous chemicals or medical wastes. Toilet backflows that originate from beyond the toilet trap are considered to be Category 3 (black) water situations, regardless of visible content or color. This category includes all forms of sea water, ground surface water, and rising water from, rivers or streams. They carry silt and organic matter into structures and create Category 3 ”black” water situations. In situations where structural materials and / or contents have been heavily contaminated with such materials as pesticides, heavy metals, or toxic organic substances; the water damage is considered to be Category 3 (black) water.

The categories Of Water Damages inform you of the precautions that must be taken BEFORE you place airflow on the drying job.

                                                                                                                                                                                                                                                       IICRC Standard S500: Standard and Reference Guide for Professional Water Damage Restoration.