What I can say for
hand - washing, though, is that the best way (speed & water-wise) is to fill a small dishpan partway with water, pile in as many dishes as are covered at once, turn off the
faucet, take them out one by one, scrub each side with a soaped sponge or brush, pile up elsewhere, and then rinse the whole pile quickly
under water about as hot as you can take it.