Jess lives in the pool all summer, but we never swim with her pump (we use animas). Swimming makes her BG drop so it works well for us. We just check BG, hook up the pump, give a quick bolus, and then disconnect and off she goes again. And btw, I said her pump broke in February.... She ran to get in the pool and forgot to take off the pump. I noticed and took it off right after she jumped in. 2 hours later we go to leave and the pump is ruined!!! There was tear in the rubber over the buttons that I didn't realize was there. Unfotunately our warrenty was up about a week before that so they wouldn't replace it. We did decide to go with animas again, and they overnighted a loaner pump to use while we went through the process of getting a new pump.