Question: can swallowing pool water make you vomit?
Answer: One example is crypto, a parasite that causes diarrhea, cramps, fever, and vomiting, which can make you sick for up to a week. Chlorine can take several days to kill off crypto, and during that time swimmers can pick it up by swallowing pool water. Other bacteria to be aware of include E. coli, Giardia, and Shigella.