lady with her child and a bag of salt

Salt for Water Softeners

Salt is an essential part of your water softener. It cleans out your Harvey™ Water Softener, keeps it running efficiently and effectively and ensures your Harvey Guarantee stays valid.

You can buy water softener salt for your Harvey™ Water Softener in our online shop.

Find out more about water softener salt and what it does below:

All Harvey varieties of salt (from left to right clockwise, tablet, granular, tablet, mini curve, block salt)

All Shapes and Sizes

Water Softener Salt comes in all shapes and sizes, from block to curve, tablet to granular and each of these sizes is designed for specific machine types.

The main thing to consider is salt quality. A lower quality of salt will damage your machine over time, lessen the soft water impact in your home and lead to poor performance and rendering your Harvey warranty invalid.

Harvey have the largest range of water softener salt and only supply the highest quality of salt for your Water Softeners, so you can rest easy knowing that we’re looking out for you and your home.

Block Salt or Curve Salt?

Water softener salt was once only available as bags of granules or tablets. These bags were awkward to load, very heavy and took up a large amount of storage space. Harvey revolutionised the industry and invented block salt in the 1980s, going to market in 1995, changing the industry forever.

Mini Curve revolutionised it again as the go-to, high quality salt option for curved salt machines – smaller, lighter, more eco-friendly and more efficient.

Buy Block Salt Now Buy Mini Curve Salt Now
Tablet Salt Close Up image

Tablet salt or Granular salt?

Tablet salt meant that spillage became less of an issue than with granular, but these bags are still huge. To put this into perspective, a bag of tablet salt weighs 25kg whereas as the HarveyArc mini curve salt pack weighs just 4.25kg. Granular salt is also available in large bags and can be cumbersome, but you can also use granular salt in your dishwasher – making it very economical. As always, we recommend consulting the manufacturer when utilising granular salt.

Buy Tablet Salt Now Buy Granular Salt Now

Mini Curve and Block Water Softener Salt benefits

Block and Curve salt has meant that our water softeners are far more compact and efficient than ever before.

In addition, Mini Curve and Block Salt itself is:

  • Easy to load
  • Easy to carry
  • Easy to store

Our Mini Curve and Block salt is high quality, food grade, meaning that there are no anti-caking agents or other nasties in it. You can order Mini Curve and Block Salt from our online shop.

Buy Salt Online

Unsure what salt is right for your Water Softener?

Use our handy Water Softener Salt Compatibility chart to see what salt is right for your machine. Alternatively, you can call our friendly team of experts who will happily guide you through the best salt for your machine, usage and to keep it running at top performance.

How can I order replacement Salt or Filter Cartridges?

You can purchase any salt or filter cartridges (plus a whole lot more) through our online shop or alternatively through our sales hotline or storefront.

Get directions to our storefront.

How hard is my water?

Use our water hardness test to find out how hard the water is in your area. At a level of 100ppm, you could benefit from a water softener.

parts per million

Unfortunately we do not have data for your area but you could still benefit from a water softener.

The UK’s #1 selling Water Softener

  • Stop limescale at the source and reduce your energy bills.
  • Keep your appliances running and lasting longer.
  • Soft on skin and hair, say goodbye to hard water irritation.

Once you submit your details, what happens next?

  • Submit your details using this web form.
  • We’ll contact you over the phone to understand your requirements.
  • We can provide a water softener demo, either in your home, or virtually online.
  • We then give you a personalised quote based on your household’s needs.
  • Start enjoying the benefits of soft water.

Request your personalised quote

    To find out more about how we use and manage your data, please see our data policy

    Frequently Asked Questions

    Why do I need water softener salt?

    Salt is essential to keep your water softener running smoothly and supplying your home with softened water 24 hours a day. To keep it running efficiently and performing to its best, all you need to do is keep it topped up with salt.  Salt regenerates the machine and flushes away any hard minerals that might otherwise accumulate. It’s the salt that removes magnesium and calcium from ...  Read More >

    How much salt will the water softener use?

    The amount of salt your water softener uses will depend on a number of factors, such as how many people are in your household and how much water they typically use.   Most Harvey water softeners use block salt (depending on the model – our Smart HarveyArc uses Mini Curve Salt Blocks). We’ve designed both the ...  Read More >

    Which salt do I need for my HarveyArc?

    You need the Mini Curve Salt Blocks for the HarveyArc. These blocks are made specifically for the HarveyArc softener and fit neatly into the salt space. Mini Curve Salt Blocks are also lighter and easier to handle than original block salt. The curved salt is lighter (2.15kg per block) and smaller, so it’s easier to ...  Read More >

    Can I still use my block salt in the HarveyArc?

    No, original block salt does not fit the HarveyArc. The Mini Curve Salt Block is made specifically for the HarveyArc and fits neatly into the salt cavity wrapping around the cylinder case. The Mini Curve Salt Block is also lighter and easier to handle than the original block salt. If you have block salt remaining ...  Read More >

    How do I put the Mini Curve Salt Blocks into my HarveyArc softener?

    Take the lid off your HarveyArc and pick up one of the curved salt blocks. Place the salt into the salt compartment so the curve of the salt fits around the water softener. Then place another block next to the first one. Blocks then stack on top of each other, to make up a block ...  Read More >

    How do I refill the block salt?

    Refilling your water softener salt is simple and you’ll know when it needs topping up just by looking through the clear lid at the top. In a pre November 2020 Harvey water softener model (HV4), you’ll see a red line that indicates when to refill salt in your water softener. Using the grip points on the salt block, place each block in with ...  Read More >

    What happens if I run out of salt?

    Don’t worry if you completely run out of salt. All that will happen is that you’ll have hard water again and you’ll stop noticing the benefits of soft water. As soon as you fill the salt chamber again, your softened water will be back. It’s best to check salt levels regularly to avoid running out, ...  Read More >

    How long will it take for my salt to arrive?

    When ordering salt from our website, we would expect you to receive your salt within 2-5 working days, unless there are any delays with delivery from our handlers. Buy salt from our online shop here.

    Can I use broken salt?

    Yes, you can use broken salt. It’s perfectly functional, as long as you can fit the pieces into the salt chamber. Our couriers take great care with your delivery, but sometimes salt blocks can get broken in transit. Or you might accidentally break one by dropping it while putting it away. If the broken salt is in a few pieces, simply ...  Read More >

    How do I know when to change my salt?

    For pre November 2020 Harvey water softener models (HV3, HV4 etc.)  you can check how much salt is in your salt chamber simply by looking through the clear lid of your water softener. The red line inside is the indicator to look for to know when to refill salt in your water softener. If you have a HarveyArc, you can add extra ...  Read More >

    Can you use softened water in a dishwasher?

    Softened water can be used in a dishwasher – in fact, it’s good for your machine, your dishes and your wallet!   When you add salt to your dishwasher, the dishwasher uses it to create its own softened water supply. If you install a water softener, you won’t need to do this anymore because the water that comes into the machine ...  Read More >

    How much sodium is added to water during softening?

    It’s a common misconception that the process of water softening increases the salt levels in your water. Even though physical salt is loaded into the water softener, the salt doesn’t actually enter the water supply.   The salt is used to clean and regenerate resin that acts on the water in a Harvey water softener. In the softening process, ...  Read More >

    How can I find out how much sodium will be in my water when softened?

    The simplest route is to call the customer services number for your water supplier. Ask for the sodium level in the water supply and calcium carbonate hardness. (N.B. both sodium and calcium carbonate hardness must be expressed in mg/l. Divide the calcium carbonate hardness level by 2.175 and add the sodium in the water supply). ...  Read More >