There are lots of reasons a house becomes flooded. There may be an instance such as a broken pipe That floods your house. Imagine you go off to work thinking everything is fine only to come home to a flooded house. A pipe has broken and has been spraying water all day long filling your house with water causing all kinds of damage to the walls and floors. Maybe it is the pipe behind the washing machine in the laundry room in the middle of the house or a pipe located in the walls of the living room. The problem with a flood is more than just excess water in your home it can leave devastating damage behind. There can be contaminates like mildew or mold that could be a problem to your health. It is always a good idea to have a professional clean up crew to help you clean up the flood.
Before walking into the home one very important thing you must do is to make sure all power is off to the home. If the main power switch is in a dry place then turn off the power. If it is in a wet area you must have an electrician turn your power off so you can avoid electric shock. It is important to open up the home to allow for drying and getting it started. If you were on vacation or away from the home for an extended period of time you should assume that mold is growing and will need to contact a professional to determine if in fact there is mold growing in various places such as drywall after a flood.
Once it is safe to begin removing any standing water, one can scoop up the water and dump it outside or sweep the excess water out the door to help the drying process. The earlier the water is removed the less amount of damage it causes so its important to get the water out as soon as possible. Once the water has been removed and the damage has been assessed then repairs can begin. It is important to allow the area to dry out and keep in mind all of the safety protocols. If it was a natural flood than it is important to keep in mind that mud and debris will have to be cleared as well. Always wear gloves if you are clearing this yourself.
In the case it is an overflowing toilet or sink then clearing the water right away by sweeping the water out of the house and opening up the windows and doors as soon as possible will be the best way to help prevent as much of the damage as possible. In any case always try to remove the water as promptly as you can so that the airing out can begin.