water help building

Sooooo....... I have a 1/2 inch flexi tube running to my 5 gallon Jerry can for my sink setup . I have 3 cans and as soon as I switch one it tastes fine but after half a day it starts to taste like rubber/ plastic the cans are food safe and I tasted the water from a new can and it’s fine is...

How do you guys keep the water? Do you guys have a water tank or do you regularly refill small gallon tanks? If you do have large water tanks, do you attach it to the top or bottom of the bus, and how do you keep the water from freezing in the winter? And how do you get the water? Like; where...