When it comes to running a water utility, saving water and saving energy mean pretty much the same thing. When water is wasted, so is the energy it took to pull the water from the source, treat it, and pump it up the water tower.Other sectors — industrial, commercial, residential — are coming to that realization. And they’re seeing that it works the other way, too: Saving energy saves water. It’s a concept called the energy-water nexus. Sandia National Laboratories, on its Web site, says it this way: “Energy production requires a reliable, abundant, and predictable source of water, a
