No doubt, the machine is a bit mind-bending to behold. You fill an opaque pot with water, place it into a slot, hit a button, and presto, a clear, purified vase of water fills from the bottom up. From ...

You’ve seen the Elkay bottle refill stations. They seem to be everywhere: in schools, offices, gyms, and especially in airports. First rolled out by the Illinois plumbing fixture company Elkay in 2010 ...