You cannot save your home from being a victim of natural disasters, broken or leaking pipes, overflowing water, leaking roofs, etc., all the time. But what you can do is make sure you call the water extraction service right away.
In situations like, a small leak in the bathroom or kitchen; it can be handled easily. Grab a couple of towels and a bucket and you're done. But, if the water is toxic, like that from sewage, then this DIY dewatering plan could be extremely dangerous.
You can become seriously ill, and the water could contaminate your entire home if not disposed of properly. The best option is to call an emergency water extraction service, and until they arrive, you can remove mobile furniture and other items that have been in the contaminated water. Trying to DIY this situation would make things worse and you could end up with a mold and pest infestation in your home.
Since water tends to become contaminated, water extraction experts use proper protective equipment and very powerful machines to fight floods and protect your property from damage. Then they help you dry your belongings and use disinfectants to make it safe to handle again.
Other things you can help with is turning off the main power supply. Remove as much as you can from the flooded area and keep it in the sunlight to dry. If the flooding is caused by a leak, turn off the main water supply. The water extraction experts will do their best to take care of your home in the meantime, but it's also your job to help them and their family through the entire process.