Swimming areas such as swimming pools, water parks, rivers, lakes, and the ocean contain germs that may cause sickness.
Many parents have the false notion that pool water is sterilized by chlorine and so their kids have no risk of getting sick. Chlorine does a good job killing most germs, but it doesn't kill all of them. When contaminated pool water is swallowed, your child can get diarrhea that lasts from a few days to several weeks. This diarrhea can be serious, especially for young children, pregnant women, and people with weakened immune systems.
A child or adult with infectious diarrhea can contaminate pool water even without having an "accident" in the water. Even 2 weeks after a person's diarrhea has stopped, he may still contaminate the water.
Reduce the risk to you, your child, and others of getting ill from pool and water activities by taking these precautions: