The water-energy nexus and water conservation

Almost 80% of all water consumption comes from two groups: No. 1, thermoelectric power, and No. 2, irrigation (farming). Public supply, which includes industrial buildings, commercial buildings and residences, accounts for only 10%. When we have spoken about water conservation our conversation revolves around 10% of all usage. Therefore, as I argued in my last column, the answer to better water efficiency requires our society to address the water-energy nexus and smarter irrigation. To address the water-energy nexus, we are going to first address energy production, followed by evaluating the nexus itself. After addressing the water-energy nexus we will look at some of the agricultural uses of water. By reviewing our “Pareto Drivers” of water use, hopefully, we can gain a better context of how water conservation in the built environment impacts overall sustainability.

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