Five years from now, if all goes to plan, Arizona will have conserved 5 million acre-feet of water.

That’s enough to fill about 2.5 million Olympic-sized swimming pools.

Or about 70% of what the state is estimated to use in a year, from all sources.

Or a little less than double Arizona’s annual Colorado River allotment (that is, if we were getting our full allocation, which hasn’t happened in a while).