We highly recommend that you avoid submerging your new device piercing(s) in water for at least two (2) weeks and needle piercing(s) for 30 days post-piercing. This is particularly true of waters that may have live organisms in them (oceans, lakes, and rivers). While pools are more sterile environments due to the chlorine content and filtration systems, chlorine is a harsh chemical that can irritate the piercing site. We recommend pushing off pool swimming during that period. (If this is not possible, it is imperative that the new piercing is thoroughly cleansed immediately after swimming.)
After this two-week healing period, you are free to swim in any body of water(!), just make sure you bring your cleansing solution with you and that you are thoroughly cleaning your new piercings once you're finished with your swim.