You can do anything, within reason, no wrestling lol. You can swim with a peg, except maybe two weeks post surgery. You may want to put a clip on the tube incase the plug pops open, secure the tube to body by Saran Wrap, tape or flexible bandage. I would make sure to clean thoroughly afterwards, maybe apply Bactrim, due to the microorganisms, pollution in salt water, fesh water, and who knows what in pools. Why not call the doctors office to check.