Garbage Disposal with Septic Tank – Is It Safe?

Can you have a garbage disposal with a septic tank? I have been asked this question more than I ever expected. You may not have any idea about many of people use the septic tank in our country. Just after I started researching about disposal systems, I got to know that more than 21 million households in the United States use a septic system, not a public sewer. So, is garbage disposal with septic tank a safe option for you?

garbage disposal with septic tank

As stated by the Federal Housing Authority, a garbage disposal does not harm your septic system. As far my concern, I know that anything can go wrong if misused. While both using a septic tank and a garbage disposal you should be aware that there are rules. I have seen people to highly abuse a disposal, who have a public sewer system. I don’t think s septic tank can take that misuse and keep working properly.

Can you have a garbage disposal with a septic tank?

Yes! You can have a garbage disposal with septic tank, but before that you need to know few rules. You should make sure that you will use it properly if you want to use a disposal without causing harm to your septic tank. 


If you have a septic tank, then you must know how it works. Inside a septic tank, bacteria digest the organic substances and separates the floatable matters. So, the floatable waste layer goes to the land field, and the leftovers solids go down in the tank to get digested by bacteria.

So, some of the elements are digested by bacteria, and some are not. If you do not use a disposal correctly, then your septic tank can fill up with a pile of food leftovers. The whole number of Bacteria may not be sufficient to break down that much waste.

So, if you want to use a garbage disposal with septic tank, there are some do’s and don’ts if you have to follow.

Do’s

  • Use your Trash Can to dispose of significant amount of waste
  • Buy a powerful garbage Disposal that can quickly transform the food waste into thin particles
  • Use cold water while operating your disposal
  • Use a septic tank garbage disposal that does not harm your septic system
  • For more confirmation, consult with a professional to make sure your septic tank size can take the load of a disposal

Don’ts

  • Don’t Use a disposal like a trash can
  • Don’t overload your disposal and septic system with waste
  • Never put non-food items inside a disposal
  • Don’t put the forbidden foods in garbage disposal
  • Don’t pour grease or oil inside your disposal
  • You may need to pump more frequently in case of misuse
  • Don’t go for the Additives without knowing it
  • Don’t Use a disposal like a trash can

No matter how powerful your garbage disposal is, never use it as a trash can. Always put the big amount of leftovers into a trashcan and not your disposal unit, especially while using a garbage disposal for septic tank.

  • Don’t overload your disposal and septic system with waste

There are disposals powerful enough to break down your waste into small thin pieces. So, many people throws every bit of waste into a disposal system.

It may not cause harm to a disposal on a regular sewer system, but will create a problem if you are using a septic tank.

  • Never put non-food items inside a disposal

Any kind of non-food items can get stuck inside your disposal. If not then, surely it will cause harm to your septic tank.

  • Don’t put the forbidden foods in garbage disposal

Stringy foods, fruit peels, hard bones, rice, pasta, onion skins, artichokes, etc. should never be put in a garbage disposal.

  • Don’t pour grease or oil inside your disposal

Grease and oil are extremely harmful to your septic tank. Never put a lot of oil, grease or fat element inside your disposal.

  • You may need to pump more frequently in case of misuse

While using disposal for septic system, In the case of heavy use, or a small size of septic tank, you may need to pump your septic tank more often.

  • Don’t go for the Additives without knowing it

There are hundreds of additives available in the market, saying it will help break down the waste inside the septic tank. But as said by professionals, most of the additives do not help your septic system, rather may cause harm. So, don’t fall for the marketer, until you know it correctly.

Best disposal for septic system

Insinkerator, one of the most popular manufacturers of garbage disposals has a special product for the houses with septic tank. The perfect septic tank garbage disposal is called Insinkerator Evolution Septic Assist.

This disposal for septic system is designed in a way that can prevent causing any harm to the septic tank. Every time waste gets disposed inside the grinding chamber, with the Bio-Charge technology, it injects enzymes inside. Enzymes start to dispose and break down the waste even before it gets into the septic tank.

It is an excellent option for septic tank as enzymes are not harmful to as the additives you can find in the market. This disposal works quietly and functions very powerfully; it literally processes the waste into thin pieces, which is very important if you have a septic system.

In conclusion, can you have a garbage disposal with a septic tank? Yes, you can. Some people may need a disposal but don’t go for it, thinking it will ruin their septic tank.

So, if you have a septic tank and think that you cannot have a garbage disposal, it’s not true. You always should use a garbage disposal like a garbage disposal, not a trash can. Especially when you have a septic tank, you should be more careful. Using it correctly and doing the necessary maintenance, you can easily use a garbage disposal with septic tank.

Read Review for the InSinkErator Evolution Septic Assist

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