aacab88e_tates___Evidence_Based_Birth____3
[0] Water immersion [1] 6%5 [2] This intervention is supported by evidence. Of those women who use water immersion, 91% find it somewhat or very helpful.5 [3] 
Water immersion shortens labor and relieves pain. Unlike epidural anesthesia, water immersion has no known adverse effects.20
Labor Day 2012: The State of Evidence-Based Maternity Care in the United States - Evidence Based Birth -