When thinking about conservation and sustainability, most people immediately think of energy: how we use it and where it comes from. We develop metrics such as carbon footprinting and greenhouse gas emissions to track our energy usage, and we equate low energy usage with low impact.

But, are you thinking about water?
In a typical building, for example, water treatment – that is, heating or cooling water – accounts for about 10 to 15 percent of energy usage. That cost can often dwarf the cost of the water itself!…
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