I have not found a solution to this either. I have been on Remodulin SubQ with Remunity since March. There has been no swimming. I have even given up on showering as every cover I try steams off or leaks. I take tub baths and lean over the tub to wash my hair once a week. I am not amused. It is my understanding that the pump is waterproof but the site is not...I did not find that very helpful. I hope someone out there has a creative solution!