Can swimming in a pool, pond or lake spread lice?

Swimming with someone who has lice carries no greater risk of transmission than any other activity. Head lice can survive underwater for several hours, firmly locked onto the hair. This is how they survive shampooing, rain, seawater, and swimming pools. Chlorine levels found in pool water do not kill head lice. Head lice may be spread by sharing towels or other items that have been in contact with an infested person's hair. Children should be taught not to share towels, hairbrushes, and similar items either at poolside or in locker rooms.