Water childbirth

OK, call down.

There are evidence that water birth resulted in drowning, pneumonia, maternal infections, hyponatremic seizure activity. Source

Also respiratory distress, hypoxic brain damage and cord rupture. Source

There is and probably there will be no randomized control trial study comparing water birth and regular for this very reason.

Now, there are evidence that water birth is easier for mothers.

There is no competition. People tends to sacrifice live and health of their children for own convenience. There is not much you can do.  

Here you have complete study, young Padawan.

500 000 cases in meta-analysis.

Less laceration, less haemorrhage and grater comfort for mothers. Tripling of mortality rate for infants.