You guys going to bash on me for "stealing" (which it's not by the way- it's not.) Just cause I'm using more water than my neighbors... it's not my fault my stupid duplexes split the water bill in between everybody. Otherwise I would gladly pay it...
No you wouldn't. I was curious about how much I would pay in water bills if I setup such a system when I started mining. If I remember correctly where I live the water would cost 5 to 10 times as much as the electricity used to power the rigs.
And I did the maths using the best conditions: I computed the lowest water flow possible based on low incoming water temperature and highest safe output water temperature (60°C which should be safe enough for the GPUs but may not be safe enough for the tubing, joints, ...).