To be perfectly frank, if she were having these accidents, which she cannot control, I would not take my daughter to the pool or the beach until she is a couple of years older. Deprivation? Not really. Many inland kids never see a pool or ocean until they are much older! Just do water-play in the backyard if you have one, using the hose and maybe a kiddy-pool (supervised! I knew two children, one was 5 years old, who drowned in unsupervised 5 inches of water). If you don't have a yard where she can water-play, don't worry about it. Take her to the park with friends for a run-and-play picnic! Your daughter at this age seems to be either distracted at the beach/pool, or is perhaps made slightly nervous by the activities there (her throwing up in the pool might be a sign of this). Some children, (my own included), are not totally in control of their eliminatinon track until they reach kindergarten. Don't call attention to it and don't tell her why you are eliminating beach/pool activities. Tell her you just think she would be enjoy it more when she is a bigger girl, and tell her you are going to do some more fun things during the summer, as an "experiment", to see what other fun things there are to do (are there any theme parks nearby?), and that she WILL be back in the pool when she is a "big 6-year old girl, and that that time will come soon!" Don't make problems for yourself, as this will soon pass and in a year or so, she will be accident-free in the water. Meanwhile, save yourself a lot of work and anxiety - not to mention pool contamination for other swimmers - by simply eliminating this type outing until she is just a bit older and can communicate with her own body more easily. She will, in the long run, never miss one or two years' absence from pool/beach activities, and you will be a happier mom for it! You sound like a good mom, BTW!