Indoor ones usually work for me, but only half of them actually chill the water. One time it looked like it wouldn't work, but I just had to hold down the switch for 15 seconds before it flowed sufficiently. What I'd really like to know, however, is why some taste fine while others taste absolutely gross, despite being in the same building.

I haven't encountered an outdoor one in a while, but they usually don't work. Unless I'm abroad. By the lack of foot traffic and the state of other public facilities in the US, I'm not too surprised. The last working one I encountered outdoors looked quite old and disused but the water tasted really nice. And sweet. In hindsight, that might have been a great source of lead. Oops.