I think anything in excess (lemon water included) is probably going to have unpleasant side effects. I personally don't drink more than 1-2 glasses a day. I c

I think anything in excess (lemon water included) is probably going to have unpleasant side effects. I personally don't drink more than 1-2 glasses a day. I certainly wouldn't encourage that anyone replace water with lemon water - but it's really just lemonade without the added sugar. Lemonade is of course not particularly great for your teeth in excess - but no worse than gatorade. Sugar is also famously not great for teeth, and therefore lemon water is less damaging - in equal volume - than lemonade. What's also particularly important with regards to dental health is how long a given substance lingers in the mouth. Drinking a glass of lemon juice isn't the same as swishing it around for 20 seconds. TLDR; No.