Question

how can hard water be made soft water?

Answer 1

Ion-exchange resins can also soften both temporary and permanent hard water. The resin is made into small balls around 1–2 mm in diameter, which are packed into a tube or 'column'. ... In effect, calcium ions that do cause hardness are swapped for sodium ions that do not cause hardness.

Answer 2

Boiling water removes some types of hardness , so it will work.. Bring the water to a boil for a few minutes. Let it cool for a couple hours. White minerals should settle to the bottom of the pot.