Is it really that good of an Idea? Filling a Bathtub with water means that the water has a big surface area, which means that the water can evaporate quicker. It’s also quite useless if you don’t have enough water and want to fill anything, because you couldn’t scoop enough water out.
Even worse, the water would be filled in one single, big ‘container’ - one mistake, one fight or one accident and the tub might be broken or something very dirty or even poisonous falls into the water and your whole, formerly clean, water is basically a puddle of (mild to medium, depending on the circumstances) poison.
Bottles, Tupperware, even plastic bags would be a better alternative. Nealry every household should have some bottles, plastic boxes and bags, and you can easily use those for storing water. There is also barely any chance of loosing all your water in one go if something happens, and it’s divided into more…usable portions.
Another problem with the Baththub is the distribution of liquid. Most Bathtubs I’m seeing are 2, sometimes more tiles big. Putting a liquid into one part of the bathtub would automatically put a percent of it into the other parts as well, and this can become quite ugly, if the game has to manage half potions, or even worse, thirds of a portion.
To the topic: As RD says, the values seem to indicate that you’re drinking from the bowl, not the water tank - Pretty sure that this was never changed. Any liquid you would put into there would become unpure, and therefore usually unusuable. Clean water however should most likely convert into dirty water and be stored, I’ll give you that.
