In fact, try your best to avoid even having water get in your mouth. Please wash your hands with soap and water after using the toilet or after changing diapers. You can protect others by being aware that germs on you body end up in the water. Please take your kids on bathroom breaks often. Please change diapers in the bathroom and not at poolside.
Germs can spread to surfaces and objects in and around the pool and spread ilness.
We all have invisible amounts of fecal matter on our bottoms that end up in the pool.