Does drinking water make your skin better/less oily?

well i have very oily skin and it makes my blackheads real bad and with foundation etc it just makes them worse, so i'm cutting down on makeup just using concealer and blush, do you think this will help? i'm also drinking more water and eating healthier, will this help with my skin and blackheads? anyway, does water make your skin better, look nicer and help reduce shine and oil? i really am trying everything to get rid of my blackheads, thankyou.