how young does everybody start giving their baby apple juice with water ?

I was told they don't need juice, formula/breast milk or water was enough. But you can introduce 1 oz of juice with water after 6 months. But your the mom only you know what's best :)

Nothing, including plain water, should be introduced until 6 mos! formula and breast milk only till then!

6 months! juice and water are considered solids and shouldn't be given to baby until around that time.