Category 1 water is considered "clean" as it does not pose an immediate health risk. It typically originates from broken pipes, leaking faucets, or melting snow. It may cause discoloration or mold growth if left untreated.
Category 2 water is "gray" water, which contains bacteria or other contaminants. It originates from dishwashers, washing machines, or sewage backup. It can cause health problems if ingested and may require special cleaning and disinfection.
Category 3 water is "black" water, which is heavily contaminated with sewage, bacteria, and other hazardous materials. It can cause severe health risks and requires immediate professional cleanup and disinfection.