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2. Water softening - Wikipedia

   en.wikipedia.org/wiki/Water_softening

   Water softening is the removal of calcium, magnesium, and certain other metal cations in hard water. The resulting soft water requires less soap for the same cleaning effort, as soap is not wasted bonding with calcium ions. Soft water also extends the lifetime of plumbing by reducing or eliminating scale build-up in pipes

3. Deep water source cooling - Wikipedia

   en.wikipedia.org/wiki/Deep_water_source_cooling

   Deep water source cooling (DWSC) or deep water air cooling is a form of air cooling for process and comfort space cooling which uses a large body of naturally cold water as a heat sink. It uses water at 4 to 10 degrees Celsius drawn from deep areas within lakes, oceans, aquifers or rivers, which is pumped through the one side of a heat exchanger .

4. Soft water path - Wikipedia

   en.wikipedia.org/wiki/Soft_water_path

   The concept of the soft path was first used for energy resource management and was developed by Amory Lovins shortly after the shock of the 1973 energy crisis in the United States. [1] This concept has now been refined and applied to water, most notably by water experts Peter Gleick [2] and David Brooks. [3]

5. Capacitive deionization - Wikipedia

   en.wikipedia.org/wiki/Capacitive_deionization

   Compared to reverse osmosis and distillation, CDI is considered to be an energy-efficient technology for brackish water desalination. [7] This is mainly because CDI removes the salt ions from the water, while the other technologies extract the water from the salt solution. [6] [8]

6. These are the most energy-efficient states - AOL

   www.aol.com/most-energy-efficient-states...

   Story at a glance South Carolina was ranked as the least energy-efficient state, with Alabama, West Virginia, Arkansas and Mississippi rounding out the bottom five. The WalletHub report comes amid ...

7. Here are the most and least energy efficient states - AOL

   www.aol.com/most-least-energy-efficient-states...

   Story at a glance Utah is the most energy efficient state in the United States, according to a new WalletHub analysis. The personal finance company compared home energy and vehicular energy ...