Is It Safe to Eat Dishwasher Salt?

A dishwasher uses a special kind of salt specifically made to soften water. The salt is made of 100% sodium chloride NaCl. Although table salt does contain sodium chloride, it also has magnesium, which dishwasher salt removes in hard water. Does that make a dishwasher suitable for eating?

Aside from dishwasher salt being too salty from the 100% sodium chloride, the salt is manufactured specifically for use in a dishwasher. No research says you can use dishwasher salt for cooking. Don’t go trying things you don’t know if they have health implications. 

Is Dishwasher Salt Toxic?

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Dishwasher salt is used in a dishwasher to soften the water used to wash dishes. Since it comes in contact with plates, it is in no way toxic. The salt is also used in water plants in areas with hard water to help in softening. 

However, it would be best not to use dishwasher salt for cooking. The salt might contain hazardous health chemicals added by manufacturers. Dishwasher salt is too salty. 

What Happens If You Consume Dishwasher Salt?

Since the dishwasher salt is made of Pure sodium chloride, there might be few or no health implications when consumed. However, dishwasher salt is not approved for consumption. There might be additional chemicals added to dishwasher salt by manufacturers. 

Dishwasher salt is too salty. The saltiness might make it hard to consume food made with this kind of salt. 

Overeating sodium chloride could lead you to get sick. 

Is Dishwasher Salt the Same as Table Salt?

Both dishwasher salt and table salt have sodium chloride components. However, dishwasher salt is 100% sodium chloride, while table salt has some magnesium and iodide components. 

Dishwasher salt regenerates resins that remove magnesium and calcium from hard water. While dishwasher salt removes magnesium, table salt contains magnesium.

Table salt is made of fine particles, while dishwasher salt has large granules. Using table salt in a dishwasher will dissolve quickly, which might plug the dishwasher. 

When added to a dishwasher, dishwasher salt softens the water, making the dishes sparkling clean. It prevents the words from having streaks resulting from limescale. Dishwasher salt also increases the efficiency of a dishwasher. This is done by ensuring no limescale buildup happens in the dishwasher.

Table salt can damage a dishwasher’s mechanical components, which is the opposite of what a dishwasher salt does. Removing magnesium and calcium from hard water ensures the dishwasher does not overwork.

You should therefore use the two salts for their intended use. 

Other Uses for Dishwasher Salt

Aside from softening water in a dishwasher, the same salt has other essential functions. 

  • Limescale removal: Dishwasher salt ensures that your dishes are sparkling clean. It removes the limescale buildup in containers after rinsing.
  • Clean oven doors: Due to its effective softening properties, you can use dishwasher salt to clean your oven door. The steam produced during baking sticks onto the oven door, causing black tar. Pour the dishwasher salt on the door and let it melt the tar, and make cleaning easy. 
  • Getting rid of weeds: If you notice some weeds around your home or patio, you can dilute the dishwasher salt in water and pour it on the weed. The salt will kill all the weeds.
  • Clean pans: Salt can be used to get rid of grime from pans. Dishwasher salt has large granules, which make it practical for this purpose. Pour a dishwasher salt on the pan, let it sit for 10-15minutes, and scrub the pan.
  • Unclog drains: If your drains have been clogging and don’t have money to pay a plumber, you can use dishwasher salt. Pour a cup of dishwasher salt into the drain, a cup of baking soda and vinegar. Let it sit for 10-20minutes, and pour boiling water into the gutter.
  • Cleaning other appliances like a coffee maker: If your coffee maker is making bitter coffee, then the coffee maker is dirty. 
  • Getting rid of oil spills: Dishwasher salt is your savior if you have those stubborn oil spills stains in your garage or driveway. Wet the area and pour dishwasher salt on the colour. Let it sit for 20minutes, and scrub the oil stain. Use a clean cloth, and the colour will have disappeared.

Dissolve about five spoons of dishwasher salt in water and pour it into the coffee maker. Run the coffee maker cycle with the mixture inside. Run the process with clean water. The coffee buildup that makes the coffee bitter will disappear.

There are many other ways you can use dishwasher salt in your home. But do not use it for cooking. Dishwasher salt is not approved for human consumption.

Can I Use Dishwasher Salt in My Bath?

If your bathwater is hard, you can pour some dishwasher salt to make it soften the water. Hard water makes it difficult for the soap to work effectively. 

Avoid using too much salt, as too much chlorine will make your skin look ashy.

Can I Use Dishwasher Salt for Cooking With?

Although no research shows the health implications of using dishwasher salt in food, cooking with this salt is a bad idea. The salt was manufactured in a way it works best with a dishwasher. Therefore, the salt has not been handled as cooking salt is dealt with during the manufacturing. 

Dishwasher salt is also made of 100% sodium chloride. This makes it too bitter compared to the regular salt used for cooking. 

You should therefore avoid using dishwasher salt for cooking.

Does Dishwasher Salt Expire?

Although salt does not expire, you should check the manufacturer’s indicated date of expiry on the package. 

In most cases, dishwasher salts have a lifespan of 2years. Do not use expired products in the dishwasher. The water will come in contact with dishes. 


Although both dishwasher salt and table salt contain sodium chloride, you cannot use the dishwasher salt when cooking. Dishwasher salt is too bitter, and manufacturers do not use food standards when handling it. Besides, they might add some chemicals during packaging. 

Using a dishwasher salt in a dishwasher is the best way to ensure your dishes are sparkling clean with no limescale buildup.  You can also use it in other ways at home. 

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