Not unless you drink it or use it for cooking food.
Many manufacturers recommend periodic flushing of water heaters to remove sediment that can build up. The sediment can cause discoloration of the water and can make the water heater less efficient. Be sure to follow the manufacturer's owners guide for your hot water heater.
Very ,very ,very dangerous condition called SPILLAGE
Yes, but the temperature is too high for most human pathogens, so they're usually harmless.
Many things, most notably the removal of chlorine, sediment and bacteria you can read more about here
The fluid above the sediment after centrifugation is called the supernatant.
Why would anyone put dirt in a water heater ?? Normally water heaters have sediment from the minerials in the water supply and the instructions furnished with the heater tells how to cure this problem
Many manufacturers recommend periodic flushing of water heaters to remove sediment that can build up. The sediment can cause discoloration of the water and can make the water heater less efficient. Be sure to follow the manufacturer's owners guide for your hot water heater.
It is probably sediment from the hot water heater, you may need to flush out the hot water heater tank, all it takes is a garden hose.
No, that is perfectly fine as it is an electric heater, However if you had water near the electrical appliance, that would be dangerous.
Yes, especially if it is electric.
AS water heaters age, they corrode and also incur mineral deposits and sediment at the bottom of the tank. This sediment is what causes the popping noises when the heater turns on. It is mini explosions inside the tank. Having yearly maintenance on the water heaters helps to prolong your heaters from having this issue by flushing out the sediment buildup and replacing the sacrificial anode rods when needed.
Yes, if your hot water heater is leaking, you need to call a plumber. A leaky water heater can be very dangerous and needs to be taken care of as soon as possible.
No, it is not dangerous. (Unless you are working with a water heater that is 20+ years old.) In any modern hot water heater, if the pilot light goes out a fail-safe will go off - preventing gas from leaking out. Also, there is a sensor so if there is not enough air-flow or oxygen with the water heater, it will shut off the gas.
Bacteria can be dangerous in many ways. Some bacteria carry diseases that can cause severe illness or even death. Some bacteria causes food to spoil and can make drinking water unsafe to consume.
You are more than likely correct. Try draining the water heater to remove any sediment.
Never. It is very dangerous to adjust the control during water heater operation.
Unless the heater is relatively new, the drain is going to be slow and in some cases not work at all. Rust and sediment collect in the tank and plug the drain.