How fast does standing water have to come out?
Standing water should come out as soon as the source is controlled and the electrical is confirmed safe. Every hour it sits, it soaks further into the materials it touches, so the speed of extraction affects how much has to be removed later.
Water on a hard floor can be pumped out in a few hours. Water on carpet and pad takes longer, because the pad holds the water and the pump only reaches the surface. The crew lifts an edge to check how far the water went, and the extraction is planned around what is under the surface.
The first hours matter most for the materials at the bottom of a wall. Baseboard, drywall and insulation take on water quickly from a flood, and the wicking line rises past the visible water level. A fast extraction shortens the wicking, and the readings show how much has been avoided.
Should I pump the water out myself with a wet vac?
A household wet vac can pick up a small spill on a hard floor. It is not a substitute for extraction after a flood, because the water it leaves behind soaks into the materials it cannot reach, and it is not safe to use near live power.
A wet vac on a small spill, with the power off and the cord kept out of the water, is a reasonable first response. Empty it outside the building, and keep the room ventilated. Do not use it in water that has reached an outlet or a switch.
After a larger loss, a wet vac will leave the carpet and the subfloor wetter than they were, and it can spread water to rooms that were dry. The crew uses equipment built for the volume and the depth, and it reads the materials as it goes.
What should I move out of the way before the crew arrives?
Move valuables, documents, medicines and electronics out of the water and onto dry surfaces. Keep the power off to any room with standing water, and clear a path to the entry and the source valve.
Photograph the water and the damage before anything is moved. Take wide shots of each room and close-ups of the tide line, the source and the damaged items. Those photographs are useful for the claim file.
Do not carry heavy furniture through standing water, and do not stand on wet carpet to reach a high shelf. A crew can move heavy items safely once the power and the water are under control, and that is part of the scope.
What happens to the water once it is out of the building?
The water is discharged in a way that suits what it carries. Clean water can often go to a drain. Storm water and sewage are handled under the rules that apply to them, and the technician agrees the discharge route with the homeowner before the pumps start.
The discharge route is a real decision, and a crew should explain it before the work starts. A large volume of water pumped onto a lawn or into a street drain may need a different route than a small volume pumped into a sink or a tub.
Ask where the water is going. A crew that cannot answer that question on the first visit has not finished planning the extraction.