In the house I'm renovating, I'm planning to install a switch (20 amp) in the box next to the receptacle for my Calypso washer, so I can turn it off when not in use. Dishwasher will also have a wall switch. If I'm going away for a day or more, I'll turn off the dryer and other large appliances at the circuit breaker. I haven't decided yet if I'm putting the panelboard for that section of the basement in the hall or laundry room. As for the water, the plumber has installed a lever type shutoff valve for the washer.
At the house I'm currently living in, I always turn off the range at the circuit breaker when I'm not using it. It's not the range I distrust, but rather the wiring going to it. It's the original cable from 1938, and not in the best shape. This place has a washer and dryer (early 90's Hotpoint), but washer is broken, and they are in a very nasty basement. So I've been doing my laundry at the washateria.