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Using a dishwasher can be up to 5x more water-efficient than hand washing. Hand washing one load of dishes can use 20 gallons of water, whereas water- and energ
by sanbor 1mo ago
Using a dishwasher can be up to 5x more water-efficient than hand washing. Hand washing one load of dishes can use 20 gallons of water, whereas water- and energy-efficient dishwashers may use as little as four gallons.[1]
[1]: https://www.kitchenaid.com/pinch-of-help/major-appliances/dishwasher-vs-hand-washing.html#:~:text=Using%20a%20dishwasher,as%20four%20gallons. https://www.kitchenaid.com/pinch-of-help/major-appliances/di...
- goodmythical 1mo agoCan is doing an awful lot of heaving lifting there. Given that my sink cannot contain 20 gallons of water and that I do not even fill my sink full to do my dishes by hand, I cannot possibly be using 20 gallons of water to do my dishes when I do my dishes by hand.
- lostmsu 1mo agoYou don't rinse them after washing?
- ndsipa_pomu 29d agoI don't apart from when I'm initially filling the washing up bowl and doing some cups and glasses. My theory is that the washing up water has less surface tension and thus runs off the crockery better when they're draining/drying.
- gruez 29d agoWhere does this leave us then? All the dishwashers include a rinse in their standard cycle, so should it be surprising that you can save water by cutting corners like not rinsing?
- ndsipa_pomu 29d agoDishwashing machines probably have more need to rinse the dishes as they are using more concentrated formulations. I don't know if it's safe to lick dishwasher tablets, but I hope it's safe to lick dishwashing liquid, though probably not very nice.
- sanbor 29d agoAgreed. I was trying to make the point dishwashers use less water than washing by hand [1]. To what extend I haven’t found much research. BTW many people have water running constantly while doing the dishes. [1]: https://www.epa.gov/watersense/start-saving#save-indoors https://www.epa.gov/watersense/start-saving#save-indoors
- goodmythical 29d agoI understand, but the point is that they don't do so categorically. They might, and even probably often do, but not always. If the intent is genuinely water conservation, it is important to understand that there may be situations in which the dishwasher is not the most conservative option.
- drdrd 29d agoYou have to subtract out evaporation and water shrinkage.
- polotics 1mo agoit really depends how you do it, I don't think one serious non biased study has ever been done. probably an ultrasound bath is the most energy and water-efficient method