The short answer to this question is yes, the tubs are very sanitary, but if used in the right way. Like everything else, those tubs come with a user manual that should be followed by everyone willing to use the whirlpool tub. Most of the tubs that are a part of our list have very flexible piping, made to let the water drain out properly and faster, not allowing the bacteria to remain inside your water. But of course, if you are willing to be completely safe from the bacteria, you must follow all the guidelines linked with the products used and the time frame in which you need to change the water.