Carbon
It isn't an element, it is the salt sodium chloride a compound.
chlorine
are you asking what element is used or how it is used? if you are asking what element is used it would be charcoal. Chlorine gas has been added to kill bacteria.
Chlorine is the element located in Period 3 that is used for water purification. It is also a member of the Halogen group.
For example, water reacts with zinc, releasing hydrogen, an element.
Depends on what you're trying to purify it from...
Chlorine
The wattage used to heat water with a single heating element depends on the power rating of that element, which is typically measured in watts (W). For example, a common residential water heater element might be rated between 1,500 to 5,500 watts. To determine the exact wattage used, you would need to know the specific rating of the heating element in use. The energy consumption also depends on the duration the element is operating and the volume of water being heated.
The heating element in a water heater is responsible for heating the water to the desired temperature before it is used for various purposes like bathing or washing dishes.
Water is not an element
This would be Chlorine.
The chemical element found in sea water and used as a fire retardant is bromine. It is extracted from seawater and is widely used in fire retardant materials due to its ability to inhibit the spread of flames.