Bottled water varies in taste and quality. I am conflicted a little by it too. I do not like the environmental impact of bottled water, the wasted energy to ship it and the plastic waste.
But tap water is increasingly loaded with non-filterable elements, the chemical waste that people eliminate like anti-depressants SSRIs, hormones from birth-control pills and anti-biotics. So it is not an easy choice.
If you do sometimes choose bottled water then how acidic/alkaline it is, can vary a lot. I have been trying to alkalise my diet and Saka water has the highest Ph rating going 8.2 (neutral is 7), plus I love the taste.