How come it that these new school doctors are telling the young girls not to give the babies water?

Misinformation. Breast milk is 75% water and formula is 50% water so somehow the notion that infants do not need extra water got born. They do not need much- 1-2 oz a day to flush the system. Too much water is empty calories and can fill them up and reduce their milk intake...So a little water is fine.