My tap water comes from ancient underground aquifers. While I realize it's not sustainable for centuries, for now we have pretty damn good municipal water. The only thing is slightly high, naturally occurring arsenic levels, which I filter out, but it's probably not necessary.
Nonetheless, people here complain about our water like it's Flint, MI. and buy bottled water?
My water/sewer bill is $50/mo. for two people. Some of my neighbors are paying hundreds a month. I don't know what they're doing with their water, but it's a choice they're making, my bill is proof.