No need to take a wrecking ball to the entire house at the sight of a little mold. You can keep the price down by focusing just on the area where there is visible mold. For example, mold on drywall in one corner of the room only needs cut out and replaced in that corner. Yes, the rest of the room (and maybe adjoining rooms) should be cleaned, but only damaged drywall needs to be cut out and replaced.
Category 2 Water - Refers to a source of water that contains a significant degree of chemical, biological or physical contaminants and causes discomfort or sickness when consumed or even exposed to. Known as "grey water". This type carries microorganisms and nutrients of micro-organisms. Examples are toilet bowls with urine (no feces), sump pump failures, seepage due to hydrostatic failure and water discharge from dishwashers or washing machines.