I know we can't completely avoid it. I have consumed it few times too. In 2014, I watched a show called "1000 ways to die". I don't like the show but I watched it twice. On one scene, there was a lady who would drink 8 small bottles of water and she loved exercising. She was really fit but I am not sure for how long she consumed the bottled water ( the ones sold on markets). She was jogging but collapsed and died. Doctors said she had high sodium levels in the blood because of consuming bottled water. I doubt if we can completely stop drinking bottled water but drinking it once in a while is not bad.