because every millisecond of running water cost money ($)
no you dont It is safe to leave the water on, whislt changing the stem If you don't want any problems, turn the pressure off.
It May Be A Good Idea To Turn It Off As Long As It Remains Near Full It Would Be OK. Just Incase Turn It Off. That Way The Top Element Will Not Be In Open Air( Not Covered With Water ). Which Will Cause It To Burn Out. Also When Water Is Turned Back On. Turn On The Hotwater & Let It Run To Remove Any Air That Might Be Trapped In Tank. Then Turn It Back On.
Yes, you should turn it off.
yes turn the water off and get someone to help you put in the water faucet
Turn off to replace or service. Turn off if away from home for extended amount of time, such as vacation.
When washing dishes, turn off water when using soap. Also you can turn off water while brushing teeth, when you rinse, then you can uses the water.
shutting off the valve
Yes, make sure you turn off power to the water heater. Also shut off the icemaker. No. Just turn it off. Just remember to turn it back on before you open any of your inside faucets. And you also need to turn off the hot water heater.
After pollutants were found in the water, the council had to turn it off until the problem was resolved.
YES and No Yes if you are going to be working on the gas water heater and No if you are working on a cold water line and if you are working on a hot water line you can shut off the gas or electric to the water heater so in case your water heater drains but what I usually do is just turn the water heater's water supply valve off.
What you use to turn the water on or off.
Without having a stop in the run you'll have to turn off the system, unless...If it is the hot water side you can turn it off at the water heater.