Patellofemoral Pain Syndrome is common in active people, generally more so with women than men.
A common question asked by those suffering it is: "Can I use a Patella Brace for Water Sports?"
As most patella braces don't have rigid components such as hinges, they are well suited to water sports in both fresh and salt water. Most manufacturers include cleaning instructions with their products and it is also common to state the suitability of the product for use in certain environments.
Even the few products that have hinges can usually be worn in water if the stated procedures are followed. The bottom line is that a patella brace is designed to allow you to do all of the activities that you want. In the majority of cases this includes watersports.