Ten gallons to hand wash is crazy. I have and use a dishwasher but when I hand-wash I use maybe two gallons of straight hot water. I wash everything, give it a minimal rinse with the sprayer and then hand dry to remove any remaining soap suds or water.

If I hand wash, I wash as I go. It takes maybe 5 minutes to wash up dishes from breakfast or lunch, maybe a little more for a big dinner, maybe not.

Dishwashers let you accumulate dirty dishes for a day or two which is the real advantage in water savings. But I've noticed a lot of people pre-wash by hand and then load the dishwasher. I don't understand that, if I'm going to "pre-wash" anything I'll just wash it completely and put it away.

> A modern dishwasher will use 3 to 4 gallons on a run. By comparison, my kitchen sink holds about 10 gallons of water on each side. When I wash by hand, I'll fill one side with soapy water and rinse each dish individually. Easily more than 10 gallons of water get used in the whole process.

I'm pro-dishwasher, but you could use much less water handwashing.

If I don't have a dishwasher, my normal method is to stopper one side of my sink, squirt some dish soap on the first few dishes, and run just enough water to wet the dishes. Then I scrub some dishes, run the water (into the stoppered sink) just to rinse them as I transfer to the dish rack, then turn off the water and repeat. The dirtiest dishes that have the most food stuck on get done last so they get the most time soaking in the soapy rinse water from the rest of the dishes. I can do a full dishwasher load with one side of my sink maybe 1/4 full of water.