Originally Posted by Virtuous
Yes and no. You can recirculate the water while adding more and more ice. But then you are using more energy to freeze the water to cool the hot water, etc etc...
Municipalities waste far more water than any of us could dream of. Now I am not saying I condone wasteful water usage but it works out to be the same as taking 1 extra shower a week. If you want to conserve then drain the water into the soil and not the sewage system. The Collection system and process requires far more money and energy then simply pumping it out of the ground.
I agree that some municipalities waste water, but I know alot of them do not get it from the ground either. They have to pump it out of rivers and treat it, which adds up. I agree that you should use your spent water to water the lawn, as it takes a tremendous amount of work to condition waste water to be released back into the environment. I think that the energy spent on making ice would be offset if you factor in how many gallons of water you save by recirculating it. I make alot of ice out side this time of year and I could store it for latter in the deep freeze if I wanted but not everyone has the benefit of -20 winters
I get alot of my ice from either liquor stores when I buy something there(free bag with purchase) or the excess capacity of my freezer with 3 ice cube trays. You would be shocked how many gallons of water chilling your wort takes. Also most showers have the water saving heads installed. Just my 2 cents.