"The good news is that chlorine, which is widely used in pools, is effective at killing many pathogens. The not-so-good news is that chlorine does not work instantly – and it doesn't kill everything," Lisa Cuchara wrote for The Conversation in 2025. https://to.pbs.org/4maqLz9
Most pool-related risks can be reduced with simple precautions by both the pool staff and swimmers.
