The tap water in Canberra, Australia is the tastiest I’ve tried out of the ~20-50 municipalities I’ve sampled in Australia, Western and Southern Europe, the US, China, Taiwan and Vietnam.
Also the US is not a third world nation, it’s a developing nation. Or under-developed would be more accurate, but that’s not a popular term. The US is a first world nation by definition, since first world just means the US global empire and it’s allies.
It tasted better in Canberra before the 2013 bushfire, back when it was filtered through pine needles, before they removed all the pine farms