2007 estimate f households:
111,162,259
(http://www.census.gov/population/projections/nation/hh-fam/table1n.txt)
average annual household water use:
127,400 gallons
percentage used for toilets:
26.7% = 33,124 gallons per household per year
(http://www.toiletabcs.com/toilet-water-conservation.html)
Sooooo,....
33,124 * 111,162,259 = 368,213,866,716 = 368 billion gallons per year saved by using this method if everyone in the US does it.
=====================================================
overview if video not working:
put a bucket over your bath tub drain so that while you take a shower it will fill with water splashing off of you.
when full set bucket aside and use the water to flush your toilet by pouring the water directly over the toilet drain til everythings flushed away.
You can do this using a very small amount of water from the bucket if you aim right and hold it high enough (the force of the water falling into the drain sucks everything away).

































I don't mean to be condescending, I just really don't get it.
2) it takes a lot of energy to desalinate water, energy costs money and creates pollution.
3) it is impossible to pump desalinated water from the oceans to all inland inhabited areas over tens of thousands of miles in the quantities needed (for farming, drinking, livestock, washing, toilets, etc). This would require immense new infrastructures.
4) things other than humans need water too, if we drain all local water and then start desalinating and pumping new water inland for only ourselves this would still be a problem for the 'natural surroundings".
5) probably other reasons too, those are just off the top of my head..
http://www.youtube.com/watch?v=l31MSpojWTA
remix as heard in video:
http://www.youtube.com/watch?v=PtsErVLpy0k&feature=related
We dug another well, 7 ft by 14 ft. This well had a separate pump in our basement and in the well itself. The one in the well was used to water the garden. Here's where it gets interesting.
I designed a forced air system to force the warm/hot humid air into the well and let it condensate from the cooler temperature inside being below the dewpoint. Here we have humidity between 80-100% in the summer, especially in droughts. A 2 inch dia. PVC pipe 20 ft long set in the ground, without forced air will strip 1100 gallons of water a day at 50% humidity. The pump inside the well made sure it never got within 6 ft of the top to allow room for the forced air to condense. A pipe with 3/4 inch holes in it for drainage, was used to vent the forced air. A vented shed covered the well.
This became our laundry water, shower water, and toilet water. In the winter we didn't get much water and had to use what we hauled in most of the time. Not enough humidity and the dewpoint simply didn't exist unless it snowed.
We began to also drain our gutter water into that well when it rained, We also dumped snow into it if there was enough to deal with, to help keep the water cold and the ground so that when warmer weather came, it was cool enough to condense the humidity. We later dug another well to take the overflow so we reduced our demand to haul water even more.
You've got a good idea here and every little bit helps when we work collectively to achieve things like this. No matter how big or small your savings create. When we moved into town, we dug a 4 ft by 30 ft well, when the cops tried to give us a ticket during a watering ban and we were watering the garden, we showed them the entire system and that it was not connected to the city water at all. No ticket resulted.