Evolution Septic Assist Garbage Disposal 3/4 HP Review Guide 

Do you feel reluctant to bring home garbage disposal because you have an installed septic tank? If you do so because of the rivalry between garbage disposals and septic systems, know that it lost its value in modern times. There are many purpose-built septic-safe disposal units that offer their services in regard. One such in my personal use is Evolution Septic Assist; the performance is appreciable. If you plan to buy one for your septic tank, read what I like to say about Evolution Septic Assist Garbage Disposal 3/4 hp. 

Evolution Septic Assist is the product of the renowned brand InSinkErator. It comes offering versatile features including 3/4 hp, stainless steel material, continuous feed, and Sound Seal sound insulation. But one thing that makes this garbage disposal stand out is due to its error-free compatibility with septic systems. 

The review deeply explains the key features, performance, and overall worth of the innovative Evolution Septic Assist garbage disposal unit. In addition, you will know the best alternatives in case it does not makeup to your requirements. 

Evolution Septic Assist Garbage Disposal 3/4 HP Review

Many of you doubt the garbage disposal and septic tank co-working and are hesitant to combine both. But not this time, because the InSinkErator septic-safe disposer takes all the responsibility and eases the way food is disposed of without putting the burden on the septic working mechanics. 

My experience of using the Evolution Septic Assist Garbage Disposal 3/4 HP is fantastic and I advise you to read my viewpoints, discover the strengths and weaknesses of the appliance to decide for yourself. 

InSinkErator Evolution Septic Assist 3/4 HP Household Garbage Disposal


  • Feed Type: Continuous Feed
  • Horsepower: 3/4 hp
  • Motor: Dura-drive Induction Motor
  • Speed: 1725 RPM
  • Grinding Technology: 2-stage multi grinding
  • Sound Insulation: SoundSeal
  • Warranty: 8 years
  • Mounting Assembly: Quick Lock Mounts
  • Power Cord Availability: no
  • Grinding Components: Stainless Steel
  • Grind Chamber Capacity: 40 ounces
  • Weight: 22.5 pounds

Physical Appearance

Catching the initial sight of how Septic Assist appears before the eyes may let you call it huge as I did. But from the industrial design to the matte black finish, it looks nothing less to fall behind while competing with other models. 

Also, a bio-charge cartridge containing the injection for inducing microorganisms into the septic tank gives a fresh look to the overall lookbook. However, the width and height do not match the standard-size garbage disposal, you can ask for help from an expert to get it installed under the kitchen cabinet to achieve a great link with a septic system. 

Feed Type

Since the design of the garbage disposal is an innovation, it relegates the continuous feed design instead of batch feed. 

The particular feed type design lets you do nothing more than flip the switch to turn on the appliance and dump food waste into the grind chamber. The rest it handles on its own that is, from churning the food particles to delivering them to the sewers. It does the job until the machine connects to the power outlet and is in an active position. 

On the other hand, Septic Assist discards the idea of batch feed. The reason is that it makes you wait to put the food particles inside, hold the stopper, and make a considerable effort to run the machine. 


InSinkErator aims to not put you into trouble by thinking the ways to install garbage disposal because it offers Quick Lock Mounts. The benefit of the mounting assembly is to cut your time short in placing the disposal unit in its assigned place, under the kitchen cabinet. 

If you notice, the Quick Lock has a Twist off and Twist on technology allowing you to simply lift the disposal unit and lock it in the space entwined with the sink assembly. However, if you have an older InSinkErator unit installed, you must twist it off and step ahead with the twist-on part. Above all, the process hardly takes you long hours. 

Build Quality

Buying the garbage disposal while having thoughts of the prosperity of another system in your mind dives you into a pool of worries. Among them, several questions, like how durable it is while entwining the septic systems, or how much it has sustaining power against extra loads of food waste are valid. 

In this regard, Evolution Septic Assist removes all your worries as it comes with stainless steel grinding materials and the same alloy material for the grinding chamber. Not only does it act as a guard against corrosion buildup but also protects blades or impellers from loosening their efficiency in cutting the food waste in the chamber, so that it does not enter the septic tank as it is. 

Your septic system is not at stake because it is protected from the harms of the extra water and uninvited food items that become the cause of the microbe’s death. 

Grinding Power

What makes me go for the Septic Assist garbage disposal because of its grinding power. Apart from inculcating the second most powerful horsepower, the Dura-drive Induction motor and 2-stage multi-grind stages cut the food particles into fine bits and pieces. 

However, the speed with which the impellers rotate is something I feel is a little bit slow, that is 1725 RPM. But again the multi-grind stages compensates for the loss and do not leave any leftover inside the nooks and corner. 

Furthermore, the practical thing I like to mention here is that garbage disposal can effectively handle the kitchen waste of five to eight people without letting you grab pliers to catch clog-forming particles. In a nutshell, you can run the machine on alternate days without any worry. 

What You Can Put in Evolution Septic Assist?

As you know, the septic system accepts only biodegradable food waste that is also in solid form, you must watch out for what you put inside the garbage disposal. So, make notes of the food items mentioned below that do not harm when sent to the septic system for further treatment. 

  • Cooked meat slices/leftovers
  • Fruit peels/soft rinds
  • Soft food items
  • Fishbones
  • Salad Leaves
  • Vegetable scraps

What You Cannot Put in Septic Assist?

You must not want any of your appliances or systems to back off. Do you? In this regard, there is a list of what you cannot put in Septic Assist to ensure the long run with the need to call the technician. 

  • Chicken bones
  • Corn and husk
  • Water-absorbing edibles, rice or pasta
  • Large fruit chunks
  • Raw meat
  • Eggshells
  • Coffee grounds
  • Oil, fats, or grease
  • Non-food items

Extra Features

Sound Insulation

As you know, Septic Assist garbage disposal is from the Evolution Series, known for the collection of Quiet garbage disposals. So, the review holds significance in defining how much noise or vibrations it creates during its operation. 

The product under observation uses SoundSeal technology that works in the background and reduces enough decibels to distract you from daily chores. Initially, you hear only a humming sound that also dies after the appliance sets up the running pace. 

What I observe is the sound-reducing materials, such as Quiet Collar, Sink Baffle, and the like work in unison and reduce the noise by up to 40% during the constant run. 

Septic Safety

The special feature that increases the value of the Evolution Septic Assist fourfold is its compatibility with septic systems. You must wonder what is special about the particular appliance to get the limelight as there are many that can get along with the underground septic system. 

Know that the specialty lies in the Insinkerator evolution septic assist bio-charge technology. It is a kind of injection that adds a dosage of liquid including bacteria, enzymes, and surfactants in the septic system for solid waste breakdown. The liquid is stored in a bio-charge cartridge and infused into the tank every time you run the machine. 

Also, the liquid going from the garbage disposal to the septic system cleans drains accumulated with soap, grease, and whatnot, leaving behind a fresh citrus smell. 


InSinkErator garbage disposals offer a somewhat shorter warranty period as compared to other brands of the same category, particularly Waste King. but with Evolution Septic Assist you get 10 long years of in-home warranty period. 

It means you can experience the functions and features of the garbage disposal and get no-pay troubleshooting services if needed in the case of the garbage disposal making strange noises and not working. 


What I Like About the Evolution Septic Assist Garbage Disposal?

  • Evolution Septic Assist is crafted from durable stainless steel material and fights well against usual wear and tear. 
  • The eco-friendly bio-charge technology provides convenience for food processing and maintains the septic system’s good health.
  • I like how the 40-ounce grinding chamber holds much of the waste at once. 
  • I found the garbage disposal among the quietest, reducing several decibels to not create a headache. 
  • The anti-jam and anti-reverse features enhance the working of the garbage disposal

What I Don’t Like About Evolution Septic Assist Garbage Disposal?

  • The garbage dipsosal does not include a power cord, you must purchase it separately.
  • Evolution septic assist garbage disposal’s dimensions are not so compact.  
  • Sometimes, it is difficult to keep the bio-cartridge in its assigned place to inject the liquid. 
  • The re-fill of the bio-charge liquid is after every 3-4 months. 


Because every device cannot fulfill all the requirements. There are two most appropriate alternatives for the septic assist that let you experience the managed kitchen cleanup routine. 

Kraus KWD100 Garbage Disposal

Kraus KWD100 competes best with other garbage disposal models when discussing compatibility with septic systems. The 3/4 horsepower with permanent magnet Megna grind motor is more than enough to pulverize food waste. 

In addition, the durability is unbeatable because of the stainless steel material from which the garbage disposal is manufactured. It not only ensures a corrosion-proof disposal unit but also protects the grinding components from becoming dull. 

Overall, the monitor is a treat for household users, for it lets you send a minimized amount of food waste into the septic tank, prevents clog formation, uses 3800 RPM speed, and is sound insulated.  

Moen GXP50C Prep Series PRO 1/2 HP Continuous Feed Garbage Disposal

Moen garbage disposals are telltale of performance with septic systems. The appliance offers you 1/2 hp horsepower with high-speed 2600 RPM vortex permanent motors to get fine food processing. It is a great choice for those who want an affordable option with extra features. 

In addition, Moen GXP50C covers only a small space under your kitchen cabinet with compact height and width dimensions. It also comes equipped with a power cord, removable splash guard, and mounting assembly to reap the benefits. 

Summing Up

You must not mitigate the wish of using the garbage disposal with a septic system. As there are many technologies, such as bio-charge injection to establish connection between two devices, so do the variety of garbage disposals. Similarly, Evolution Septic Assist is a great performer when utilized with a household septic tank. The article explains every bit of the appliance, including performance, price, specifications, and pros and cons.