Can. Lemon water bitter is due to the presence of a lot of lemon bittersweet, lemon contains a lot of lemon bittersweet, this kind of plant bittersweet in orange fruits is very high, and lemon is the highest content of a kind of lemon, often as a raw material to bring up lemon bittersweet, soak the water incorrectly, the bittersweet soak in the water, there will be a bitter taste. But it can be consumed, and lemon bittersweet has some benefits for the human body.