ShiroHagen:
Similarly with dishes - hot soapy water in the sink. Maybe rinse off the suds if you believe they are carcinogenic. But if you washed them under a running tap, the detergent would go right down the sink so you'd have to keep refreshing it. I dunno maybe I'm overthinking this.
I often wash our dishes under running water. There's only 2 of us so often dinner dishes consist of 2 plates, 2 forks and 2 knives. I have one of those dish wand things that has detergent in the handle so it dispenses the detergent as you're using it to scrub the dishes. I haven't actually tested to see if this uses less water than filling the sink and washing the dishes, but I'd be surprised if it uses more.