The first three questions on a flooded basement call decide the next four hours
Intake is triage, and the order of the questions changes what the truck carries and when it leaves.
Water still coming in or stopped. Clean water or sewage. More than one fixture affected. Those three answers tell a dispatcher whether this is a sump pump, a main line or a supply failure, and whether it is a tonight job or a tomorrow job.
Put the safety question early. If water is near the electrical panel or the furnace, the caller should be told to stay clear and, where appropriate, to contact ComEd or an electrician. Say it as a caution, never as an assessment of their property.
Write the sequence down and put it in front of whoever answers. Most shops keep it in one experienced dispatcher's head, which works until that person is on another line during the first cold snap of the year.
Track where calls stall. If callers drop out mid intake, something in the sequence is asking for a last name before it has earned one.