 Today I filled up my jug, and I usually put enough ice in to get the water below lukewarm, but not icy. I don't like icy water. It's harder to drink in abundance. You tend to sip icy water, whereas I tend to chug stuff that's chilled but not cold. There's not really a word for luke-cold water. And that's just easier for your system to absorb. It's easier on your stomach. It's easier to drink a lot of water.