I like coffee, cola, energy drinks and tea tea tea tea tea tea like the next best crazy person, but seeing how one liter of tap water costs me less than 0,1 cent (compared to 75c to 3$ or more for branded bottled water) it would be rather stupid to pass out on the deal, especially since I pay to keep things running with my taxes.
I get how people come dislike tap water when it smells funky, tastes of chlorine or comes with rust flakes, dirt, the blob or gases, but apart from these sub par real issues, I don't see the point and consider you to be a member of the princes and princesses of the world.
So, OP - you yourself state that the water in your region is 'apparently' good. I don't see what makes you so easily dismiss tap water, then. Naturally, this raises the question
WHY?
On a sidenote, the tap water where I love tends to be the same as the tap water where I live, save for those few random bursts of humpin' out in nature. The water there is also generally pretty OK, but - apart from spring water - I tend to give it a pass when I don't know where we pesky humans enrich it with poop, industrial waste or random OTC fertilizer poison stuffs.