• How?

There are quite a few strategies and technologies regarding water conservation.  In your own home, as you might have already heard many times to turn off your faucet in between rinsing when you brush your teeth.  Use a nozzle when washing your car.  Fix leaky faucets.  Reuse your A/C condensation water to water your plants and/or garden.  Use mist sprinkler poppers rather than the conventional ones.  You can even purchase made-for-home rain barrels to capture rainwater from your gutters to water your plants and gardens, even your lawn if you have a big enough barrel.

 

For a commercial building, some technologies can be quite costly, which is why it is recommended for commercial use only.  Rainwater harvesting and storage in a cistern may not be cost effective for a home, but the payback for a commercial building is quick considering the operating cost when using municipal water supply.  A couple of years...maybe even less. 

 

Another alternative is to use water efficient fixtures like low-flow toilets, dual-flush toilets, and automatic faucets.  Waterless urinals have become very popular considering they use no water and recycled graywater (used water from dishwashers, washing machines, showers, bathtubs, etc.) is also an option for irrigation.

 

Buildings owners can also opt to treat wastewater on site.  Although this option requires huge up-front costs and must meet certain state and local regulations regarding wastewater treatment.