Is it safe drinking tap water?

No because we have a good filtration system at home and it costs less per gallon than bottled water. That is not to say it is bad quality. It is as good as cheaper bottled water. We took the trouble to analyze at home with kits both and in some cases it was better than bottled water( for acidity and amount of chlorine). There are some better waters out there like Fuji but they are quite a bit more expensive. A good filtration machine can remove all the bad medication residues that seep in the water system when people throw away their medications...It can remove also so many other bad things. Usually tap water is not so bad but far from ideal...So often times it is quite worth buying a good filtration machine even when you have to make monthly payments! And you might end up saving in the long run with your doctor's bills...