InSinkErator Evolution Septic Assist Review

by Paul

When I started researching about garbage disposals and I got to know that there are people who do not use kitchen disposers because they are afraid of harming their septic system. I had no idea that the numbers of people depending on septic systems are so huge.

I kept digging deep and found a surprising result. More than 20 million houses in the United States do not use a garbage disposer just because they are afraid about their septic system. If you are one of those 20 million houses and worried about your septic tank while using a garbage disposer, then this is the best garbage disposal for septic system to end your search.

I love InsinkErator garbage disposals because they continuously try to make their disposals more powerful and user-friendly. Yes, it is not the cheapest option in the market but the features are also not available from any other manufacturer.

They have a perfect garbage disposal with septic friendly features. InSinkErator made a specialized disposal sink just thinking about the huge number of people who are unable to use it for having a septic system.

Features of the InSinkErator Evolution Septic Assist

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3/4 HP




22.1 Lbs


‎14 x 11 x 16

Feed Type


Grind Material

Stainless Steel

Septic Safe?



8 Year Warranty Limited

All About the Septic Assist Function

garbage disposer

Users who have septic tanks in their house know how hard it can be when your septic system occur a failure due to a clogged drain field or over production of sludge.

Insinkerator Evolution Septic Assist is the best and safest option for a home with a septic tank. It consists a Bio-Charge technology that automatically keeps your septic system running by injecting enzymes that produce micro-organisms.

Each time you operate the disposer it inserts 300 million enzymes.

So, the constant injection of the enzyme while operation helps to produce more helpful bacteria that breaks down your waste and take care of the extra organic waste that you put into your septic system.

Check the best price at Amazon.

Grind Capacity & Safety Options

InSinkErator Evolution Septic Assist

It is a continuous feed garbage disposer with ¾ Dura-Drive horsepower induction motor and it runs at 1725 rpm speed. The device contains a 2 stage grinding system.

It is capable of grinding a regular amount of waste produced by a big family. The power and multi-layer grinding ensure that the hardest food waste like food peels and bones will be grinded easily.

  • 3/4 Horsepower Motor
  • 1725 RPM Speed 
  • Best For Big Family

If you are using a septic system, then it is very important to have a good septic garbage disposal that reduces the chance of jamming and getting your waste particles clogged into your system.

This is a powerful unit that grinds your waste into smaller particles than usual disposers and converts it into liquid form and totally the best garbage disposal for septic.

Installating this Garbage Disposal

Disposal Sink

Most of the real consumers who has installed this unit called the installation process very easy.

Totally specific instruction provided and nearly everything included in the box needed for installation makes it pretty simple even for the first timers. 

The quick lock sink mount system provided by InSinkErator allows you to just twist and lock your mounting system in your sink and makes it very easy to install.

Installation Information

Installation Type

Quick Lock




8.1 Amps

Max Sink Thickness


Dishwasher Hose Size


Drain Connection Size

1-1/2 inch drainpipe

Cord Included


Cord Length


Expected Noise Levels

Disposal Sink

The InSinkErator Septic Assist is a very good choice for you if you are using a septic system. What about noise?

If you are specifically choosing this for power and safety and worried about the noise it will make then let me tell you the good news, this garbage disposer is much quieter than the most of the disposals available in the market.

The sound seal technology makes the grinding sound level very low and you can easily continue a conversation with a low voice while operating it in the same room.

Not only have that, the anti-vibration mount feature makes sure the unit produce less vibration while grinding the hardest food wastes.

Overall this is a quiet enough to ignore it when you are throwing bones or drumsticks inside it and talking to your friend at the same time. View more real reviews here.

Size & Dimensions

If I have to say anything negative about this garbage disposer, then the only thing would be the size. This unit is pretty big and heavy. You must check the space under your sink because the dimension of this product is 14 x 11 x 16 inches.

Many also complain about the weight as it has a weight of 22.4 pounds. But if you have enough space to have it then this is not a big issue.

Warranty Information

You get a 4 Year In-Home full service limited warranty with this disposal sink. It covers both mechanical parts and labor cost.

Although you will find other disposals with higher warranties in market, but I prefer InSinkErator more because they have an awesome support system that respond very quickly as soon as you face any problem and try to reach them.

More User Reviews

Most of the real users love this disposal sink because they can rely on the powerful performance and safety issues for their septic system.

Other than that many says this is their first choice because of the quietness of operation. Less sound and less vibration are what you get from the device. Also, many consumers are very positive about the super easy installation. See more user reviews on Amazon.

The Good & The Bad of this Garbage Disposal


  • Super safe for your septic system
  • Only Bio-Enzyme system disposer available in market
  • Heavy duty disposal with ¾ horsepower motor
  • Stainless Steel grinding components ensures durability
  • 2 stage grinding system
  • Waste particles are smaller than usual disposers’ leftovers
  • Super easy and clear instructed installation with Quick-Lock mounting system
  • Whisper quiet comparing the other powerful garbage disposal
  • The enzyme solution deodorizes drain fields and pipes


  • The size is very big comparing of most of the other garbage disposers available in market
  • Many people will say this is an expensive option, as you need to refill the Bio-Charge Enzyme solution. But in my opinion, if you don’t want to compromise the safety of your septic tank then you have to be flexible to bare this enzyme solution cost twice in a year.


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My final words are this is a compact garbage disposal with all features that a user can ask. The Bio-Charge Septic Assist technology is an awesome invention by InSinkErator for those who are looking for the best garbage disposal for septic tanks.

So, if you are looking for a perfect septic safe garbage disposer you can undoubtedly go for InSinkErator Evolution Septic assist.