Clean Water, Gray Water, Black Water Damage Distinguishes Your Restoration Path
https://expresswallcavitycs.image-perth.org/classifying-hidden-water-damage-behind-drywall-through-category-assessment-methods
Sudden water damage falls into three distinct categories based on contamination level: clean water from burst pipes or supply lines, gray water from appliances or toilet overflow, and black water from sewage or severe flooding