The 2000 times energy figure is garbage!

Peter H. Gleick and Heather Cooley who published those figures back in 2009 left out most of the energy costs associated with tap water.

All they included in their study were the physical treatment at the municipal water treatment plant and original cost to put in place the distribution system.

They never factored in the energy costs associated with the chemicals used in the treatment of tap water. They failed to factor in energy costs associated with wastewater treatment. And they left out the energy costs associated with continued maintenance of tap water infrastructure.

Once you include all those missing energy figures the actual difference in energy usage drops down below 100 times. Which puts water bottle energy usage along the same lines as fruits and vegetables we buy at grocery stores.