Here's what bugs me - why doesn't anyone make stainless steel chicken waterers?
Galvanized ones shouldn't have ACV in them, and they wear out or rust eventually.
Plastic ones shatter in cold weather if you drop them, lend to leak or have the top come apart from the bottom while you are carrying it, and I've never had one longer than 2 years. They are cheap and cheaply made. Plus, now we're getting all of this information about how eating and drinking out of plastic isn't always so good for people - maybe it's not the best for chickens? I would bet there's a good chance that there are chemicals leaching out of the plastic and into the chicken's water.
So why doesn't anyone make stainless steel waterers? Sure, they would probably be more expensive, but if they last and last, they would pay for themselves eventually. And they probably wouldn't be that expensive - we feed our dogs out of stainless steel dog bowls we got for about 70 cents each online, and stainless steel larger dog water bowls don't cost that much either.
I would pay a decent amount of money for a stainless steel waterer.