The water category decides the scope
The industry standard sorts water into three categories. Category 1 comes from a clean source such as a supply line. Category 2 carries significant contamination, typically appliance discharge or an overflow. Category 3 is grossly contaminated: sewage, river or flood water. Category 1 that sits long enough degrades into Category 2 or 3. The category is what decides whether a material gets dried in place or removed, so it is established before any equipment is set.