The answer is yes and no.
The answer depends on the type of hard water that you have and whether you are using a hard or soft water treatment system.
A soft water system may also treat the water to a softer state.
For example, a soft water purifier may treat your water to an acidic or a soft state.
A hard water system might treat the hard water to hardness and then treat the hardness back to a soft condition.
Hard water systems can also use solvents to remove hard water from the water, making the water soft again.
The most common method of hard drinking water treatment is to use an electrolysis system to remove the hard salt and the hard minerals in the water.
Electrolysis removes salt from the hard waters water.
It is used to treat hard water systems to soft water.
For more information on hard drinking-water treatment, see our article, How do I remove salt from water?
How do you remove water from hard water and hard minerals?