We have a function on our fridge for water dispensing (via the kitchen sink water supply).Does your tap at home or workplace not function? You are already paying for water through your rates. And, yes we do not need more plastic in the environment. Drink from a glass not a plastic bottle.
This is pretty much the only water we drink; fill up bottles to take with us in the car, walks etc.
Only ongoing cost for it is a new replacement filter on the line every year for about $70.