drinking 5 liters of water a day - ok for kidney cleanse?

Am considering to go for kidney cleansing by drinking water equivalent to half of my body weight (I am 86 kilos), so plan to drink 5 liters in a day..

My problem is I even find it hard to take 1 liter of water everyday... should I be eating to be able to drink this much.. is store bought bottled distilled water ok for this?