Water can do a lot of damage to a home.  A mini prepper should be wise enough to make sure water is not leaking around the areas in the home where water comes into the house. Keep your roof in good condition, caulk around bathtubs, lay down bathmats, and check under sinks.  Damage that is done by plumbing leaking over a long period of time is not covered by insurance. 

My husband and I were sitting in our living room one evening when a pipe burst under our kitchen cabinet and started flooding our home.  We quickly turned off the water under the sink.  Be sure that all family members know how to do that.

If we had not been home, the house would have flooded with water.  If we had been out-of-town for a week, we would have come home to one or two feet of water in the house.  The pressure of the water forces it through doors and other small openings. It goes everywhere. 

Always turn the water off to your home at the street before you leave on a vacation.   A mini prepper should have a wrench handy, and all family members should practice and know how to turn the water off to the house in case of a water emergency.

All pipes get old and can break.  Insurance does not cover the pipes in your home. It only covers the resulting sudden and accidental damage.   It is your responsibility to maintain your pipes.  You also need to change the water hose to your washing machine so that it doesn't get brittle and break about every five years.

Always contact your insurance company immediately when you have water in your home.  Water mitigation companies have machines that can quickly remove the water.  If they get to it quick enough most of your household items can be saved, and water mitigation services are usually covered by your homeowner policy, subject to the deductible of your policy.

If you need to leave your home during the cleanup, a mini prepper is ahead of the game with a  bug out bag.

One other note about water and broken pipes.  The pipes that run between your home and the street are underground.  However, they are still your responsibility.  If one of them breaks, you may end up with a huge water bill.  Keep an eye on your water meter.