If you are fortunate enough to have a pool in your own backyard, you should make sure that none of your family runs around the pool for any reason, since this can lead to serious injury or even death in some cases. The worst case scenario is a child falling, hitting their head on the side, and drowning at the bottom of the pool.
You can avoid accidents involving small children around the pool if you enclose it with a fence and keep the gate locked at all times. You should do this not only to keep your own children safe from getting in the pool without your knowledge, but also because other children in your neighborhood can wander into your yard and possibly drown, leaving you responsible. This is a horrible thing that could happen, but it does.
Set rules for your children according to their level of swimming experience. They should be let to swim only in depths of water that you are completely comfortable with and those who have just recently started swimming should not be allowed into water that is higher than chest level.
You should also never dive into water that you do not know the depth of. Test the depth of the water physically. No one can tell the depth of a body of water just by looking at it, especially if it is clouded by mud and silt.
If you are swimming in an area such as a river, ocean, or creek, then there is local wildlife that you will have to contend with. Know the wildlife of the area that you may encounter and be prepared to deal with the situation should someone in your group come into contact with it.
Going boating requires that you have on life jackets at all times in most, if not all states in the United States, so make sure that you have them and some extra floatation devices, just in case.
The most important thing that you can learn to help protect your family is CPR and first aid. Lifeguards at city pools are trained in these things, but if you are going swimming in an area that does not have one, this is something that can save someone's life. Consider taking a class on both subjects.
