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How a water softener works

How do water softeners work?

Water softeners use a process called ‘ion exchange’ to remove the calcium and magnesium minerals from your water as it enters your home. These are the minerals that cause limescale and removing them make the water ‘soft’.

The ion-exchange process

Ion-exchange works by removing the calcium and magnesium from your water
(they cause the chalky build up in your home called ‘limescale’).

As water enters your home it will pass through the softener tanks that are filled with ‘food-grade’ resin beads.
These beads attract and hold on to the magnesium and calcium minerals in the water and ‘exchange’ them for sodium ions.

This process makes the water soft.

The ion-exchange process

1 – Calcium and magnesium ions in hard water
2 – Calcium and magnesium are attracted to the resin beads
3 – Ion exchange takes place
4 – Sodium ions are released into the water making it soft


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