The pH of most drinks sold today is very low = VERY ACIDIC
This means they are BAD for your teeth!! Here is a list of most of the drinks available today and lists just how bad they really are. Some may wonder why bottled water isn’t closer to 7 but in order for it to sit on a shelf and not get contaminated with bacteria the water needs to be slightly acidic.
Below is a link to a word file with many of the drinks sold in the US today. I can save you some time and tell you they are all acidic.
The pH of mouthrinses are mostly acidic but most are over 4 which seems to be the point at which things start to happen.