Is salt water sterile?
Isabella Harris
Updated on January 09, 2026
While it's true that salt water (for example, saline) has long been used in wound management — especially to clean foreign materials out of a wound or to clean a wound before dressing it — the salt water in the ocean is not sterile.
How sterile is the ocean?
Unfortunately, the ocean is not sterile. “Basically, you shouldn't look at swimming in the ocean as a way to cure an open wound,” says Professor Bart Currie, infectious disease and tropical infection expert of Flinders University at Royal Darwin Hospital, Australia. As mentioned, the ocean isn't a sterile environment.Is it OK to go in ocean with a cut?
Do not enter bodies of water if you have cuts or abrasions; if injured, clean wound at once to reduce risk of infection. Many harmful micro-organisms are found in lakes, rivers, along the coast, and in other bodies of water.Can you clean wounds with salt water?
Don't clean your wound with soap or chemicals.They can be harmful to healing skin and can slow the healing process. Instead, only clean your wound with salt water, sterile water or distilled water.