Water safety and ability to swim is key life lesson better to teach as fast as possible.
Ability to swim doesn’t mean that they are able to swim competitively. They should be able to swim independently as early as possible. Preferably before the age 3.
As they test in Scouts — ability to swim means they are able to swim independently 3 lengths of 25 meters pool i.e. 75 Meters and after that they should be able to float on water for 90 seconds.
Many homes in USA have swimming pools. Also, there are numerous facilities have swimming pools. Also, starting age 3-4, many of their friends will start to have pool parties. It is very difficult to keep eye on your kid that they do not accidentally jump to the pool. If your kid knows how to swim, then you have one less thing to worry about.
Teaching kid to swim is not very difficult. You can teach them yourself or put in them in a swim class.
If you yourself do not know how to swim — well it is time to learn. You can take adult swimming classes at your community aquatic center or your nearby community college. It is not very expensive. You can be a swimmer just in few weeks.