potassium vs salt water softener

Salt, whether in the form of potassium chloride or sodium chloride is an essential ingredient of all top water softening systems. Water softeners work well with either sodium chloride (salt) or potassium chloride (also a type of salt). While some prefer using sodium chloride, others show a preference for potassium chloride.

Although these two water softeners compete for sales, the truth is that both have plenty of room to thrive. The fact is that it’s a matter of personal choice as the water softener system doesn’t even know whether you have used potassium chloride or sodium (salt) in your brine tank.

Consider The Cost

Also used in agriculture, potassium chloride is a mineral that occurs naturally on the surface of the earth. It works in water softener systems in the same way as sodium chloride but instead of sodium, it uses potassium to replace the hard minerals in your water.

Because the process of potassium chloride extraction from the earth is considerably more costly when compared to mining sodium chloride, it (potassium chloride) tends to be more expensive.

Sodium chloride brands are available in several forms such as pellets, blocks, cubes, or crystals. Besides being widely available, often sodium chloride is preferred by many customers because its price is comparatively lower.

Health Implications

As concerns grow regarding the amount of sodium being consumed by people suffering from hypertension, softened water that contains sodium has gained increased interest. For consumers who are price-sensitive and have no health concerns related to sodium, using sodium chloride-based water softeners makes lots of sense

Being 99.9% sodium free, potassium chloride is also an excellent alternative if you are seeking to cut down your sodium intake.

Environmental Impact

Potassium chloride is usually the softener of choice for many among users who are particularly concerned about the environment or who are health conscious. But the truth is that the harmful environmental effect caused by the discharge of chloride remains the same whether you are using a Potassium or Sodium softener. Both still show all of the negative characteristics linked with all water softeners that are salt-based.

Using potassium chloride-based water softeners rather than sodium chloride-based diminishes the general environmental impact perception arising from brine discharge as potassium chloride is deemed to be a healthy essential nutrient for both plants and humans.

Effects Of Potassium Chloride In Water Softening Systems

Concerns regarding the consumption of sodium from softened water have led to an increased usage of potassium chloride as a viable alternative. Today, most experts recognize potassium chloride as a logical and excellent alternative to using sodium chloride in your water softening but the two should not be mixed.

If you want to switch from using sodium to potassium chloride, it becomes necessary to boost the salt dosage program valve settings by 10% in order to ensure the proper regeneration of the new resin. When making the change, make sure you have the drained the system first before introducing the new choice.


Ultimately, potassium chloride-based water softeners are a more expensive option but a healthier one compared to softeners that are sodium chloride-based. For people who are health and environmentally conscious, using potassium chloride water softeners is encouraged as it comes with distinct advantageous over sodium chloride.