Hot WATER goes on the WATER bill, and making it probably goes on the electric bill.
Yes, hot water usage is typically included in the electric bill as it is often heated using electricity.
Not pure water - salt water can - hot or cold.
No, cold water is piped into the hot water tank and is heated by electricity or gas, it then flows out to the hot water taps.
Because the water is hot!
thermopile
Most houses still use electricity for energy but it is better to get hot water/solar panels to get rid of your electricity bill. Though you'll need more than one to completely dissolve it.
hot water
not if your heating with gas and not if you have city water
The hot water warms the refrigerator, which forces it to turn on to cool it off.
Not significantly. Using less hot water in general will save.
Yes, your gas water heater will still distribute hot water.
Hot water may or may not be included in the gas bill, depending on how your home is set up. Some homes have a gas water heater that is connected to the gas bill, while others may have a separate arrangement for hot water. It's best to check with your utility provider to confirm what is included in your gas bill.