would like to check wz mummy here.. a lot of people tell me baby can't drink plain water issit true..my girl is coming to 4 month and currently bf . when can I give her water ?

Nope. You should not give water. Breastmilk or formula milk already contain water. I never gave my son water when he was a baby. I think it’s around 1 Year old when I started giving him water as I remember. It has something to do with the electrolyte balance in the body of babies that we avoid to over hydrate the baby. Since their bodies are too small, extra water is not needed.