Quick Facts about bath water:
Babies and toddlers love to play during bath time. At some point all children will ingest bath water by sucking on a wet washcloth or drinking from a bath tub toy or cup. Bath water has soap and shampoo residue, along with dirt, oils, germs, and dead skin cells from the washed skin. Because of the large amount of water in the tub, all of these substances are very dilute and will not harm your child. The chances of having any symptoms are very low, but if a large amount is swallowed, there may be minor stomach upset, with possible vomiting often related to the shampoo and soap in the water.
If you find your child has swallowed dirty bath water, do not panic. Take the wash cloth or toy away from them, and give them some fresh water to drink. If problems start or you have questions, call the Missouri Poison Center right away at 1-800-222-1222. The poison center is open all day, every day for poisoning emergencies and questions