Some women will go on to have there birthing experience in the bath and deliver their baby there. This method has been shown to be safe and there have not been any increased risk to the infant when compared to other infants not birth in the water. Unfortunately there are only few official places to have a water birth, one of which is the North Shore Birth Center.
Sometimes there is controversy or concerns over water birth being safe. The American College of Nurse Midwives (ACNM) has as detailed information sheet on hydrotherapy use in labor, for information click here
da Silva, F. M. B., de Oliveira, S. M. J. V., & Nobre, M. R. C. (2009). A randomised controlled trial evaluating the effect of immersion bath on labour pain. Midwifery, 25(3), 286-294.
Gilbert, R. E., & Tookey, P. A. (1999). Perinatal mortality and morbidity among babies delivered in water: surveillance study and postal survey. Bmj, 319(7208), 483-487. (article available here)