Best Garbage Disposal for Septic System [Reviewed in 2022]

Garbage disposal is a kitchen appliance that can make anybody’s cooking experience smoother. Having this convenient device under your sink can lessen up half of your work.

More importantly, you will not have to deal with bacterial infestation due to waste materials’ build-up. To avoid such issues, we have some of the best garbage disposals for the septic system. 

Best Garbage Disposals for Septic System

Our review will guide you about which disposal you should get. With this, not only can you have a clean kitchen environment, but also you can increase the effectiveness of your septic system.

Our 6 Best Garbage Disposals for Septic System Picks:

Since there are many options available in the market, it is easy for you to get confused. We have narrowed down the best devices for your convenience. Therefore, sit back and let us guide you through our picks.

1. InSinkErator Garbage Disposal

InSinkErator Garbage Disposal

One of the most innovative kitchen appliances is a garbage disposal. However, not all disposals have soundproof features. Imagine making heartfelt meals for your family in the middle of all that noise. But, do not worry; we got you covered.

InSinkErator garbage disposal has a unique SoundSeal application that allows this disposal to grind waste materials quietly. This soundproof technology provides just enough insulation. Hence, even the most challenging materials will get crushed without making blaring noises.

Since this disposal contains soundproof mechanisms, it is natural to assume whether the motor functions efficiently or not. Surprisingly, the induction motor of this device gives long-lasting one hp performance.

In short, this machine’s process will not be compromised by waste materials due to the soundproof feature.

Additionally, you will not face clogging issues with this device. Even the most enormous chunks of food waste will get crushed by this disposal with efficiency.

Rigid waste food materials like bones or thick fruit parts like the ends of watermelon stand no chance against its three-stage grinding process.

Another feature of this product is its durability. This product’s high endurance is due to its alloy stainless steel material; a technology known as Leakguard Liner is behind this product’s successful and more extended life-shelf.

Even though you eventually have to replace such disposals, such comprehensive performance will provide you with outstanding sustainability.

Overall, this is a top-notch product that will collect all your wastes and chew them up efficiently. Your septic system will be consistently getting all the waste products.

There is another model of InSinkerator that’s specifically made for septic systems. The InSinkErator Evolution Septic Assist model allows you to provide necessary septic treatment enzymes when disposing of solid waste. For toughest food scraps, you may consider that version as well.


  • You can maintain a healthy noise level
  • Efficient disposal motor will last longer
  • Ergonomic design makes food waste disposal a breeze
  • This product can endure rigid waste materials
  • Alloy stainless steel is the main component


  • Relatively expensive
  • This is a heavy product

2. Waste King L-8000 Garbage Disposal Unit

Waste King L-8000 Garbage Disposal

Besides replacing your garbage disposal after a certain period, you must clean and conserve the device frequently. If your device’s cleaning process is strenuous, you will have a hard time maintaining it. Therefore, you need a product that will have adjustable parts.

With that in mind, we present to you Waste King L-8000 garbage disposal. This device has an exceptional build that allows you to maneuver the parts without any hassle. Alongside those variable parts, it also contains a flash guard removable feature.

This particular feature allows you to decontaminate and clean your waste disposal efficiently. You can also get rid of any bacterial build-up caused due to the excess level of waste materials. Now that we have talked about how you can disassemble it, let us get into the installation process.

The critical feature that allows you to install your device effortlessly is the easy and quick mounting system. This product comes with a twist-and-lock design known as EZ Mount. You can comfortably change your garbage disposal without professional help.

In addition to that point, the manufacturer provides all the necessary tools you need for installation. You will even find power cords of 32-inch size with your product. Therefore, you do not have to make an additional run to your nearest store.

All in all, you can save both your money and time if you get this septic friendly product. With the question of a straining installation process out of the way, you can remain stress-free.


  • Required hardware comes with the product
  • You do not need batteries for this device
  • Comes with a one hp motor alongside 2800 rpms
  • This motor reduces bio-degradable waste
  • Has an easy kitchen sink installation process


  • Ez mounting system might cause leakage
  • Rigid rubber gasket

3. Moen GX50C Prep Series Garbage Disposal

Moen GX50C Prep Series

If you are one of those simple home-cooks that deal with regular vegetables or fruits, then the Moen GX50C prep series is the perfect garbage disposal system for you. We understand that diced, chopped, or mostly cut excess remaining food wastes can cause major disposal headaches.

To be more specific, not all devices have the capability to handle sizeable chopped waste products. This inability is because the rigid and harsh edges of those products can cause significant damage to the motor of the device. However, that is not the case with this Waste disposal system.

You can effortlessly let this device take care of your food wastes. This device has a particular vortex motor that comes with 1/2 horsepower and 2600 RPM.

The balance of these two features provides a powerful grinding mechanism. Hence, this motor is powerful enough to handle such dense materials without getting damaged.

One major problem is the undesired clogging of waste materials. However, this VORTEX motor will reduce the number of clogs significantly. Meaning you will get uninterrupted results.

Even though this device has a powerful crushing technique, you will be surprised at how little noise it produces. The noise reduction capability of this device comes from an exceptional insulation feature.

This feature includes a sound-shield insulation mechanism, which provides a quiet operation. No matter what the material is, it will get crushed in a soundless and low-humming manner.


  • Pre-installed power cord comes with the device
  • Contains a removable splashguard
  • This has a drain stopper of stainless steel components
  • Product is relatively inexpensive
  • Water-draining occurs swiftly


  • Not a lightweight product
  • Plastic parts might break with pressure

4. General Electric GFC520N Continuous Feed Disposal

General Electric GFC520N Continuous Feed Disposal

If you are looking for an efficient garbage disposal that is also inexpensive, we got you covered. General Electric Continuous Feed Disposal has unique functions that come within a budget-friendly range. Often we see cheap products that do not function in a well-structured manner.

However, that will not happen with this product. Not only does this product carry out the basic mechanisms, but also it has some exceptional features.

To name one, it has a jam-resistant agent that inhibits any form of waste material from clogging up the pipes. Less clogging means less damage to the high speed motor.

This product also contains a superb draining technology that controls the water flow at a particular angle. The manufacturer positions the fin in a way that allows the water to flow powerfully.

Additionally, this motor works faster to chew up rigid food materials from all angles. The features that assist the engine for a superior function are 1/2 horsepower and a higher RPM rate, approximately over 2600 RPMs.

Furthermore, the producer created this device with a well-constructed and thoughtful design. This disposal is small in size compared to other ones in the market. Hence, it is perfect for 2-4 person family as it does not take up too much space in the kitchen.

Moreover, this comes with a two-step pre-cutting mechanism alongside a switch that allows you to control all the functions manually. There is even a protector manual reset system you can use in case you need to change the buttons.


  • Perfect for a small family
  • Sink flange has stainless steel material
  • You can power connect the wire directly
  • Splashguard technology
  • Contains a dishwasher drain connector


  • Not long-lasting
  • Vibrates while grinding waste material

5. Frigidaire FFDI501DMS Garbage Disposer

Frigidaire FFDI501DMS Garbage Disposer

Having garbage disposal for your septic system allows you to control the proper flow of waste materials into your septic arrangement.

With a product like Frigidaire, you can turn on the switch of automatic functions and remain unstressed. It will continuously feed your septic tank without manual intervention.

Additionally, you can prevent waste materials from splashing out of the disposal using the splash guard feature. This way, you can prevent any accidental leakage from occurring. Splash guard is not the only primary feature of this product. It also comes with a sound guard technique.

Meaning, there will be no more than a low hum as your machine automatically grinds waste materials. Since you might be using this product daily for a reasonable period, this soundproof technology comes in handy.

Another essential feature of this product is a powerful motor with 2600 RPM. For grinding a moderate level of waste materials continuously, this 1/2 hp motor is perfect.

Furthermore, you will not face issues with mounting this product. Due to its superior compatibility, you can mount it with a range of other systems.

Moreover, you can directly wire this waste disposal. Depending on your needs, you can install the electrical wiring in your way. As this product comes with an approximate 120 voltage connection, you can continuously use it without exceeding your electric limitations.

In short, this has a light yet compact garbage disposal structure that allows your septic tank to obtain those waste materials efficiently. Also, Stainless Steel material contributes to its longevity.


  • Users do not need batteries for this device
  • Galvanized Steel Turntable build
  • You can fit this anywhere dispose of food particles
  • Installation process is easy
  • Inexpensive


  • Motor is not very powerful
  • You will not get additional hardware

6. Waste King Knight A1SPC Garbage Disposal

Waste King Knight A1SPC Garbage Disposal

Not all septic garbage disposals have a powerful motor that can provide the ultimate waste material grinding capability.

A high speed yet energy-efficient product like Waste King Knight is perfect for your septic system. An exceptional one-pass technology allows this product to precisely collect food scraps.

This technology also includes the motor to have a permanent magnet with 2700 RPM. Additionally, this contains one horsepower and the ability to crush about anything.

It does not require more than 115 volts and seven current amperes to operate smoothly. You can conserve electricity with this product.

You would expect this device to create loud noises due to that high level of RPM. Surprisingly, that is not the case at all. This device has chambers that have glass-filled nylons and stainless steel. Both of these ingredients contribute to insulate and prevent corrosion of the device.

Additionally, this disposal has an incredible mounting system when you just snap and lock it. You can easily replace your existing disposer with this technology. If your septic system has the proper size, you can use a power cord of 36-inch length with this garbage disposal.

Even though this is relatively larger, this product’s ergonomic design will go perfectly with your kitchen. It will not be incompatible with your septic system. More importantly, you can install this yourself without the help of an electrician.

Overall, this product comes with unique features that allow you to maintain your kitchen and septic system’s proper environment. You can simply activate the wall switch let the disposal grind away those waste materials.


  • Contains a magnet motor of 2700 RPM
  • Stainless steel impellers that reduce jams
  • There will be no loud noise
  • 36-inch cord plug comes with the device
  • Right garbage disposal for long time performance


  • Plastic material can be flimsy at times
  • This product is large

Things to Consider Before Buying the Best Garbage Disposal For Septic System

There are many septic garbage disposals available in the market. We understand that comparing all these features can be challenging for you. Therefore, we are listing down the essential features that you need to look out for.

Types of Disposals

There are two broad categories of disposals. Before buying a removal, you need to know which type is suitable for your septic system and your kitchen.

  • Batch Feed

This type of garbage disposal does not require electrical wiring of any sort. Furthermore, it will only turn on when you place to put a special kind of magnetic stopper.

This way, you can control what items go in the disposal and what do not. However, you have to insert waste items manually each time.

  • Continuous Feed

As you guessed from the name, you do not manually insert waste materials in this type. And as this kind of disposals is electrically-based, it will run as long as there is an uninterrupted power supply. And as you do not manually discard materials, there might be a chance of accidental falling of products. 


Motors of different disposals have various kinds of power ranging from 1/2 hp, 1 hp, 1/3 hp, or 3/4 hp. For example, 1 hp is perfect for daily use if you have a small family.

On the other hand, the producer advises using 1/2 hp disposals once a week. If you cook infrequently, then 1/3 hp devices will be perfect for you.

Since each type of horsepower’s usage frequency varies, you have to pick the correct one depending on how frequently you need to use your disposal.


Now, these parts are not directly related to your garbage disposal. However, this is the bridge that connects your disposal to your septic system.

If your pipe is old and rustic, it might not handle a very powerful and continuous feed garbage disposal. It might even get clogged and cause contamination.

Therefore, stronger garbage disposals require modern and robust pipelines.

Overall Features

Here we have some basic features that a superior quality garbage disposal should have.


The core component of your garbage disposal should contain stainless steel for long-lasting performance. 

Power Cord

Some disposals come with power cords for your home installment. It is always better to examine whether your product comes with a cable beforehand. This cable can save you the hassle of additionally buying one.

Anti-Clogging Feature

This is an important feature you have to look out for. Some disposals have a reverse feature that allows them to identify clogs or jams. In addition to placing it, this feature can also automatically reverse the grinding mechanism. That way, the clogged materials will loosen up.

Noise level

As garbage disposals have a grinding mechanism, you can expect a low noise level when they function. However, some disposals have unique features. Such features allow them to operate smoothly without making loud noises.

Look out for efficient disposals that contain insulating materials. Some devices come with grinding parts that have nylon material coated externally. Others include a sound guard mechanism that allows the machine to run efficiently with low hums.

Grinding Mechanism

The essential garbage disposals do not contain a complex grinding system. However, superior quality devices have two or even three stages of grinding mechanism.

If your waste materials include hard-edged contents like bones, seeds, or thick pieces of vegetables, then you need disposal with at least a two-stage grinding mechanism. This method crushes those resilient substances in a short amount of time.

Ultimately, you will be able to protect your device from accidental clogs and bacterial build-ups.

Mounting System

Some devices have a compatible mounting system. Others have a more basic feature. An efficient mounting system will allow you to install your device with ease. 

Quick and EZ mount will allow you to install or disassemble all the components with ease. A simple technique known as the turn-and-lock system will enable you to change your garbage disposal without any professional help.


Another component you can check out is a baffle. This component is a rubber guard installed in your sink that is directly connected by screws to your garbage disposal. Any unnecessary food or water will not splash over your disposal’s grind chamber.

How to Install Garbage Disposal?

Now that we have covered all the necessary features, let us get into the installation process of garbage disposals.

Usually, the garbage installation process is relatively uncomplicated. Moreover, you can get a professional to help you out. However, it is possible to set it up by yourself.

Step 1: Disconnect the Pipes for a New Assembly

At first, we suggest you set up one or two buckets near your sink. You will also have to turn out the circuit breaker. Set the buckets under your pipes; as you remove and disconnect the P-trap, any excess liquid will fall inside those buckets.

Additionally, remove the strainer and any excess amount of putty that is attached to the sink. You should also keep some towels to remove any accidental spills.

Step 2: Apply Putty

If the manufacturer already assembles your new flange, then loosen and remove the rings. Now that you have removed the coils, check whether your disposal came with a rubber gasket or not. Even if it does come with a rubber gasket, we advise you to use plumber’s putty instead.

Because putty will seal the areas of your flange more efficiently, now you can go ahead and roll it into a thin and snake-like shape. Try to keep the diameter even and approximately 3/8 inches so that you can fully wrap around the gasket.

After placing it around the gasket, use your fingers to gently press around the entire ring to set it in place.

Step 3: Install Your Snap Ring

If you have successfully placed the putty all around your gasket, you can move on to this step. Take your fiber gasket, mounting ring, and additional flange. Carefully glide them under your flange. Then take your snap ring and snap it into place after pulling it open.

Take a screwdriver and set all the components in place. You can remove any excess putty residual after setting it up.

Step 4: Secure Tailpipe

Check on the side of your disposal unit; you will find a rubber seal. Now take a metal spring ring and secure that rubber seal appropriately.

Step 5: Remove the Breakout Plate

As soon as you have secured the tailpipe, check inside the inlet port to find out the breakout plate. Get a hammer and very gently remove it. By removing it, you can connect your dishwasher with your disposal.

However, if you do not wish to connect them, you can simply leave out the breakout plate as it was.

Step 6: Connect the Wiring

This step is a crucial part of installing your disposer. You need to check at first whether your disposal came with a power cord or not. If it did not, you have to remove the plate with a screwdriver to access the electrical wiring.

Then go ahead and connect the wiring harness. Be sure not to stretch out any part of your cord.

Step 7: Attach the Disposer Unit

On top of your disposer, fix the position of your rubber seal ring. At the same time, make sure to align the flange underneath your sink.

Then go ahead and secure the lower mounting ring with the upper mounting ring and rotate for proper alignment.

Step 8: Connect the Disposer to P-trap

Get a saw to cut off any extended portion of your PVC pipe. Then connect that disposer to your device’s P-trap.

Step 9: Secure the Unit

Finally, as you finish connecting that pipe to the P-trap, rotate the lower mounting ring so that all the tabs are in proper alignment. Then take a screwdriver and tighten them up properly.


It is not easy to pick out the proper garbage disposal for your septic system. Now that you have gone through our review of the best garbage disposal for a septic system, you can efficiently choose a device that meets all your necessities.

I hope you enjoyed the article and found your desired product out of these 10. In case you are searching for more, you may read our buying guide on budget chef knife that you can use in your kitchen. We have reviewed some of the top undermount kitchen sinks as well where you may be able to fit the garbage disposal machine.

In fact, we have a whole lineup of kitchen tools to decorate and automate your kitchen, such as- knife bag to store and carry knives, handle covers for cast iron pots and pans, dishwasher safe knife set, and many more!

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