I don't think there is a downside to good water. There is no arguement you can make on why you should not have the best water you can possibly have. We're so fortunate that we live in a county where our water's already pretty good. But now this is like living in Buckingham Palace and the water is REALLY good.
I'm so grateful that we have the opportunity to have such clean water. And the fact that I'm drinking it and it's not in a bottle.
For many years I drank the bleach..... I don't do that anymore.