NoScale
I'm assuming that you're joking and will be drinking more than one glass of water a day. Have you read the posts in this forum? If not, please go back and do so. If you're doing a water fast, you can drink unlimited amounts of water. If you're doing a juice fast, you can also drink unlimited amounts of juice.
If you only drink one glass of water a day, you could pass out or die due to severe dehydration.