Cult following. Some value "special" more than safe, and want their delivery to be an event like a bridal shower. There are some providers who can do the procedure well, and limit the risks involved, but they are few.We had one die here of e.coli blood poisoning derived from a little leaky poo in the pool.If the infants first breath is laced with germs from the surroundings expect pneumonia within hours.
Just do a normal. One, water birth in my opinion is a racket, I have done over 5000 deliveries, and in my opinion water does not add any value and has the potential to cause a lot of problems or problems can be missed because of the water birth, obviously there are some people who have a different opinion.