I don't have a dishwasher and I use very little water to wash my dishes. I fill the sink to about 2 inches and turn my water off. I wash all the dishes adding a little water at a time as needed. After every dish has been washed, I rinse quickly. I can wash dishes using less than half a sink of water. I do that twice a day--breakfast and lunch dishes together and supper dishes in the evening. I hate doing the dishes and it makes me more aware of how many dishes I am dirty-ing as I cook. Of course, I don't know how much, if anything, is being saved versus a dishwasher because I've never used one. I just try my best to use as little water as I can.