you're not wrong that it would be preferable to have tubes that didn't need plasticizers, but generally water isn't going to sit in the tubing in a soda fountai

you're not wrong that it would be preferable to have tubes that didn't need plasticizers, but generally water isn't going to sit in the tubing in a soda fountain or whatever for that long. Prolonged periods give a lot longer time for chemicals to leech, there is a "rate" component here, and the natural flow of liquid also means there is a larger volume of liquid involved, diluting things out. which isn't to say that it isn't a problem either, but in relative terms here, what I'm saying is that water that sits in a plastic Nalgene bottle for a couple days probably is more concerning to me than water that passes through a few feet of plastic tubing inside a vending machine and never sits still for more than 10 or 15 minutes. Although of course I suppose given the plastic tubes are more flexible than a hard plastic nalgene bottle, they may also have higher levels of plasticizers...