The running costs of a water softener

All ion-exchange, salt-based water softeners work on the same principle. They have a resin tank that removes the hardness minerals like magnesium and calcium from the water and a resin tank that needs to be recharged every once in a while. This is the only true way to get luxury soft water, but it is a myth that this is an expensive ongoing process.

This recharging, also called the regeneration process, uses a salt solution, with which the resin beads are refreshed so they can create softened water once more. Therefore, the salt and water needed for the regeneration process are the main running costs of the water softener.

How EcoWater softeners are different

Usage efficiency

Mechanical, block salt softeners only have the ability to reach capacity and recharge. This means they only complete the regeneration process when they cannot soften any more water. EcoWater electronic water softeners, on the other hand, use smart technology to control the regeneration process.
An EcoWater softener will not use up all its capacity before recharging, because that’s very inefficient – a bit like an automatic gearbox for a car going up to maximum revs before changing gears.

An EcoWater softener uses an algorithm that maps your water usage pattern. Based on this information, the time of recharge and the capacity to recharge is set for optimal efficiency and to avoid regenerating at times when you regularly use water.

The amount of salt and water used will vary from household to household, so it can be very hard to predict an exact running cost. Typically, your softener will recharge once or twice a week and will need a salt top up once every three months, for a total running cost of around £6.50 a month.

Tablet salt vs block salt

EcoWater softeners use tablet salt. Besides advantages in use, tablet salt is more widely available and much cheaper than block salt.

Water softener running costs: a guide

The information below shows running costs for EcoWater softeners. This information is a guide only, water usage and water hardness will affect your running costs. Total running costs include salt and water used for the self-cleaning process (regeneration), plus estimated electricity. It also doesn’t include the running costs for any water filters you might have installed to improve the taste of the water.

Case 1: A family of three

We’ll first consider a family of three, with a 3 bedroom house and 1 bathroom. We compare annual salt usage, with the eVOLUTION Compact 100 as a suggested softener.

Running costs of a water softener - family of three, 4x 25kg bags - £4.90/month
Infographic showing how the running costs of a water softener for a family of three

Case 2: A family of four

Then, we’ll consider annual salt usage for a family of four, in a 4 bedroom house with 2 bathrooms. For them, we’ve suggested the eVOLUTION Compact 200 water softener.

Running costs of a water softener - family of four, 5x 25kg bags - £5.40/month
Infographic showing how the running costs of a water softener for a family of four

Case 3: A family of six

Finally, we look at a family of six, living in a 5 bedroom house with 3 bathrooms. Their suggested water softener is the eVOLUTION Boost 300.

Running costs of a water softener - family of six, 6x 25kg bags - £7.25/month
Infographic showing how the running costs of a water softener for a family of four


Compared to a block salt softener, EcoWater softeners use less salt and water. The salt used by our home water systems is also cheaper and more widely available. This means your running costs will be less than 50% of those of other water softeners. Our EcoWater experts can also all deliver salt in either 25kg or 10kg bags, depending on your preferences. Why not check out the water hardness in your area using the tool below?

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Want to know more about our range of water softeners, or how they would fit into your home? Book a free, no-strings-attached home survey, via the form.

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