Lemon water is very healthy and good for you and is okay when you drink the lemon water in moderation.
But drinking too much lemon water can upset your stomach and may cause bloating as well as diarrhea.
The lemon water when drank in excessive amounts can cause ulcers, worsening ulcers and even cause GERD in some people.
Lemon Juice contains good nutrients and vitamins and can help improve you energy and help with digestion but if you start feeling bloated or getting stomach cramps or have diarrhea then you're likely just drinking too much of it.
Drinking a glass or two of lemon water everyday is perfectly okay and healthy but just avoid drinking too much of it.