Drinking water comes from the sky which is rain and runs down the gutter on your roof into your pipes then into the tanks for my house. Drinking water comes from the sky which is rain then it drops into the tanks and goes through the pipes so we can use the bubble taps and other water using things for my school. Drinking water for animals at my farm goes into troughs/underground pipes so they can drink it.
Some issues with drinking water is that if you live in the country like me and you run out you either have to switch to bore water or buy your water which can be annoying. But I would much rather have tank water then town water because it tastes much better.
People can access drinking water at school by the bubble taps, water fountains, taps etc. At home you can access water by taps, shower heads etc. Animals can access drinking water from troughs.