6 Best Garbage Disposal For Septic

Are you sick and tired of dealing with clogged drains and an overflowing plumbing system? It’s time to invest in a garbage disposal that can handle your septic system with ease. But, how do you know which one is the best garbage disposal for septic?

The answer lies in finding a garbage disposal that has been specifically designed to work with a septic system. In the United States, 26 million households (about one-fourth of all households) use septic systems, and maintaining a septic system can be a daunting task; one wrong move and you’re facing costly repairs and even more costly headaches.
You want something that will grind up food waste to a consistency that won’t clog your pipes and won’t interfere with your septic tank’s performance and that’s why we are here.

Top 6 Best Garbage Disposal for Septic

We’ve done the hard work for you and researched garbage disposals that work best with septic systems, so you can get the job done right the first time.

With our top picks, you’ll have peace of mind knowing that your disposal won’t put undue strain on your septic system, and you can get back to focusing on more important things.

To help you make an informed buying decision, we’ll walk you through the features to look for, as well as our top picks. So, let’s get started and find you the right garbage disposal for septic!

1. InSinkErator Evolution Septic

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No products found.

InSinkErator Evolution Septic is a high-end garbage disposal that is an ideal choice for those with septic tanks and offers superior performance and reliability.

This unit digests food waste with the use of Bio-Charge, an automated infusion of microorganisms. Your septic tank will remain healthy because of this advanced technology that breaks down food efficiently.

Our exclusive Dura-Drive Induction Motor provides long-lasting performance. Food waste is broken down quickly and easily using this motor, as it provides superior grinding power. The motor also works to reduce noise levels, making it a great choice when living in a shared space.

Multigrind Technology is also included in this product. This technology is designed to grind tougher food scraps, allowing you to quickly and easily break down even the toughest food waste. Multigrind Technology also reduces the amount of time it takes to grind food waste, so you can save both time and money.

The Evolution Septic also features the highest-durability LeakGuard Liner. This liner is designed so that food waste is not leaked into your septic system. Additionally, the liner also helps to reduce what waste is produced, helping to keep your septic system clean and healthy.


  • Dual blade system that pulverizes food particles into dust
  • Includes septic solution (bacteria) to help particles biodegrade in your septic system
  • Very quiet disposal that chews up everything put in it
  • Septic-safe option with add-on enzymes to break down food before it hits the septic system
  • Excellent build quality and easy to install without help
  • Quiet operation, surprising for its power
  • Anti-vibration and noise features make it much quieter than older models
  • Baffles noise effectively
  • Comes with all necessary parts for installation


  • Baffle can be difficult to remove for easy disposal of food waste
  • May be heavier and more difficult to install in tight spaces.
  • air release system causes some bubbling when running water
  • May not fit in standard 24″ cabinets with double basins

2. Waste King Legend Garbage Disposal

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No products found.

The Waste King Garbage Disposal Can is a must-have addition to your kitchen, as it combines power, durability, and ease of use in one compact package. With its potent 1/2 HP, 2600rpm permanent magnet motor, you can expect years of efficient waste disposal.

What sets this disposal apart is the straightforward installation process. The easy-to-install mount means you can quickly attach it to your kitchen sink, while the removable splash guard simplifies cleaning. It’s an ideal fit for any septic system.

You’ll appreciate the 5-year limited in-home warranty, which provides you with the confidence that your investment is protected. And since the power lead comes pre-fitted, you don’t need any electrical expertise to get it up and running.

The Waste King Disposal is not only compact and lightweight for easy storage, but it also boasts stainless steel grind components for maximum durability and corrosion resistance.

Designed for convenience, this garbage disposal rapidly grinds food waste when activated by a wall switch. Plus, with a 36-inch power lead, it’s compatible with most septic systems.


  • Comes with a 3-prong plug for easy installation
  • Has an easy-install sink drain attachment
  • Compatible with septic systems
  • Quieter than many other disposals on the market
  • Powerful 1/2 HP motor for efficient grinding
  • Disposal unit connects easily and securely with locking channels of zinc nut
  • Convolute splash guard provides good coverage without being restrictive
  • Does not require plumber’s putty for the flange
  • Stainless steel internals are better than galvanized


  • Silvering on the flanged tube may wear off over time
  • May require replumbing of the entire lower sink, which may be inconvenient for some users
  • Silvering on the flanged tube may wear off over time

3. Moen GXS75C Garbage Disposal

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No products found.

The Moen GXS75C Garbage Disposal Can is a game-changer for those who frequently entertain guests and need a powerful waste disposal solution. Its robust grinding capabilities and noise-reduction features make it a must-have addition to your kitchen.

The heart of this disposal is its ¾ horsepower Vortex motor, operating at an impressive 2,700 RPM. This powerhouse can tackle even the most stubborn food scraps with ease, significantly reducing the risk of jams.

One key advantage of the Moen disposal is its SoundSHIELD sound-deadening insulation. Say goodbye to disruptive grinding noises – it’s perfect for apartment dwellers who don’t want to disturb neighbors.

Designed with compatibility in mind, the GXS75C Garbage Disposal fits most existing assemblies, including other brands. The pre-installed power cord and compact, lightweight design make installation a breeze, freeing up precious space beneath your sink.

Moreover, the Moen disposal is septic-safe, so you won’t have to worry about harming your septic tank. By using a garbage disposal, you can contribute to reducing landfill waste, making it an environmentally responsible choice.

To top it all off, the Moen comes with a 10-year warranty, ensuring long-lasting performance. Its 3-liter capacity is perfect for those who often cook for larger gatherings.


  • Quiet during operation
  • Easy installation with twist-on collar and locking mechanism
  • Removable rubber drain cover for easy inspection
  • Efficient and quick waste destruction
  • Slim design provides more under-sink space
  • Sturdy and durable construction
  • Includes prewired rubber drain seal and drain plug
  • Powerful 3/4 HP motor can handle tough waste.


  • May require rearranging under-sink area due to oblong size
  • Can be noisy when first turned on
  • Possible issue with bad seal causing water to leak out
  • Difficult to connect to dishwasher for some users

4. Waste Maid Grinding System

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No products found.

The Waste Maid garbage disposal system is a game-changer for those with septic systems. It’s loaded with features to keep your septic system running smoothly, and I’m here to tell you why you need this in your life.

It boasts a powerful 1/2 horsepower, 2600 RPM permanent magnet motor, providing maximum strength right from the first spin. No matter the type of waste, the Waste Maid can handle it with ease. And, thanks to its anti-jam torque, it won’t get stuck when dealing with heavy or dense items, resulting in quieter operation.

It is equipped with a Master stainless steel grinding system, designed to cut through any waste like butter. The well-balanced turntable and impellers also minimize vibration, extending the disposal’s lifespan.

Now, let’s talk about convenience. The Waste Maid is a continuous feed garbage disposal, allowing you to toss in food scraps as they’re being processed. No more waiting for it to finish one item before adding another. Just remember to run water while it’s operating to keep it working optimally.

And most important thing, installation is a breeze. It is compatible with 3-bolt mounting systems, so it can easily replace your existing unit and fit into almost any kitchen sink. No need to worry about complex installations.

In short, the Waste Maid garbage disposal system offers power, durability, and convenience, making it the perfect choice for those with septic systems. Trust me, your kitchen and septic system will thank you for investing in this product.


  • Slimmer size and lightweight for easier handling and installation
  • Quieter operation than many other disposals
  • Freed up some cabinet space under the sink as well as an easier plumbing set up.
  • Effective at grinding up food waste
  • Powerful motor with smooth operation
  • Slim design fits in smaller cabinets
  • Sturdy construction with stainless steel components for corrosion resistance
  • Easy to install with clear instructions provided in video format


  • Plastic housing components may not be as durable as metal components
  • Black rubber strainer can impede water flow and needs to be removed during use
  • Support ring can be difficult to install alone

5. Kraus KWD100 Garbage Disposal

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No products found.

The Kraus KWD100 Garbage Disposal efficiently grinds food waste with its powerful 3/4 horsepower, 3800 RPM motor. Its user-friendly, two-step mounting system creates a perfect seal with rubber gaskets, preventing leaks.

Constructed with a robust ABS thermoplastic housing and stainless steel grinding chamber, this disposal guarantees durability, quiet operation, and corrosion resistance. The package includes a sink drain stopper, drain and dishwasher connectors, a power cord, and a stainless steel rimmed mounting flange.

Compatible with standard 3 1/2″ circular drain openings and 1 1/2″ plumbing connections, the KWD100 is a breeze to install in most kitchens. Its overload protection prevents motor damage, while the Permanent-Magnet MagnaGrind motor ensures quick and efficient waste grinding—faster than induction motors.

QuietStorm soundproofing and anti-vibration technologies keep this disposal whisper-quiet, preserving your home’s tranquility. If a blockage occurs, the Motor-Saving Shut-Off system activates, cutting off electricity to protect the motor. Simply clear the debris and press the Reset Button to resume operation.

With the KWD100, you can reduce waste volume by up to 50%, saving septic tank owners time, effort, and money. Its high-power motor tackles even the toughest food scraps, preventing clogs in your tank.


  • Very quiet, almost silent operation
  • Installation is straightforward and easy
  • German engineering inspires confidence in its durability
  • Powerful and efficient grinding
  • Works perfectly with a Kraus sink and rubber seal
  • Stainless steel components won’t rust or dull down
  • 3/4 hp motor is powerful enough to handle tough jobs


  • Does not come with a dishwasher connector kit.
  • Countertop pushbutton on/off switch not included must be purchased separately
  • May require pushing food down manually
  • May be too tall for some installations, so check clearance beforehand

6. Chooba Garbage Disposal

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No products found.

The Chooba Garbage Disposal, not only does it excel in all types of kitchen grinding tasks, but it is also one of the quietest disposals on the market.

It is powered by a 3/4 horsepower DC motor and is equipped with a multidimensional grinding system. This powerful motor is 20% quieter than other garbage disposals, due to the quality protection shell’s vibration-reducing properties. So you won’t ever have to worry about disturbing your coworkers, your sensitive dog, or your young child.

The 3-stage, 3/4-hp garbage disposal grinding system is designed for multi-dimensional grinding. This ensures that all scraps are ground to the highest quality quickly and efficiently. After three processes of grinding, bones, fruits, and other food items will be shredded and pulverized, leaving no trace of their existence.

This garbage disposal also boasts an impressive internal design. The two grinding chambers are designed to minimize clogging and jamming, while the stainless steel grinding blades are corrosion-resistant and reduce noise. The disposal is also equipped with a built-in anti-jamming timer, which prevents the motor from overheating and jamming.

An incredibly strong discharge is offered by this Disposal, which has a powerful DC vortex motor. This means it can flush all pipe debris, including small pieces of kitchen waste, far away from your septic system. This helps to prevent clogging and rusting of the disposal, drainage system, or other plumbing.

In addition, it is incredibly easy to install. It takes only 20 minutes to install the basic setup, and the sink nozzles can accommodate up to 4.3″ in diameter. This makes it ideal for those with limited space or who don’t want to spend too much time on installation.

As part of its anti-jamming technology, it also ensures that it runs smoothly and efficiently. This system is designed to prevent clogging by detecting any blockages and automatically reversing the system to break them up. This helps keep your system working like new and can save you time and money in the long run.

Finally, this Garbage Disposal is extremely easy to use and maintain. It requires no tools for installation, and it comes with a 2-year warranty for parts and labor. Plus, the disposal is easy to clean and maintain, as it requires only occasional rinsing and removal of debris.


  • Easy to install with included fittings
  • Excellent disposer overall
  • Considerably quieter than the old one
  • Has strong suction
  • DC motor eliminates motor hum
  • Powerful and efficient
  • Can handle a variety of food waste items with ease.
  • Crushes bones and leftover vegetables with ease, without getting jammed
  • Built-in pump moves waste down the line effortlessly
  • Works efficiently and quickly, without shaking the sink


  • May be heavier than other models and require a well-supported sink for installation
  • Drain pipe provided is not standard size and may require replacement
  • Water drainage may be slow

Things To Consider Before Buying A Garbage Disposal For Septic

Garbage Disposal

Selecting the perfect garbage disposal for your septic system is a crucial decision that impacts both your household’s efficiency and the environment. Our comprehensive guide will help you navigate the key factors and things to ask yourself before buying, ensuring you make an informed choice that brings convenience and peace of mind to your daily life. Let’s embark on this journey together to find the ideal disposal unit for your unique needs.

1. Is my Septic tank big enough?

When considering whether or not to buy septic tank disposal, make sure the disposal fits the septic tank. A septic tank needs to be able to handle the waste that the garbage disposal will add to the system. Septic tanks that are too small, may not accommodate additional waste from the garbage disposal, leading to a buildup of solids and an eventual clog or backflow.

To determine if the septic tank is large enough for additional waste, one must consider the size of the tank. A general rule of thumb is that a septic tank should be at least a 1000-gallon tank with garbage disposal. If a septic tank is smaller than this, you should consider whether or not it can be upgraded to accommodate more waste.

It is also important to consider the number of people in the household and the frequency of use of the garbage disposal. If the household is large and the garbage disposal is used frequently, the septic tank should likely be even larger to accommodate the additional waste.

2. Does the Garbage Disposal Break Food Down Finely?

A garbage disposal for septic systems must be able to grind food waste before being purchased. If the particles are too large, they can clog the septic system and cause damage to the tank, drain field, and other components. 

To ensure that food waste is properly broken down, be sure to purchase one with a grinding chamber that is capable of finely grinding food. The grinding chamber should be equipped with a powerful motor and sharp blades that can efficiently break down food waste. The grinding chamber should also be designed to reduce noise, as this can help prevent damage to the septic system. 

Some garbage disposals come with a built-in grinding chamber that is designed to break down food waste into small particles, while other models require the use of specialized grinding plates. By reducing the size of food particles, the grinding plates ensure that septic systems do not get clogged. It is important to make sure that the grinding plates are made from a durable material, such as stainless steel, to ensure that they do not become dull over time. 

In order to see the food being broken down finely, the size of the grinder chamber is also important. If the grinding chamber is too small, it will not be able to process food waste effectively. In addition, a larger grinding chamber may be necessary if the garbage disposal will be used to grind a lot of food regularly.

3. Is this Garbage Dispose of Suitable for Your Family Size?

The size of your family and how much food waste you generate are important factors to consider when choosing garbage disposal for a septic tank. Garbage disposals that are too small for your family size will not handle the waste generated, which can lead to clogs and other issues. 

In contrast, a garbage disposal that is too large can damage the septic system, resulting in costly repairs or early replacement. A family of 1 or 2 people typically needs a septic tank of 500 gallons, while a family of 3-4 people requires one of 750 gallons. Furthermore, larger families of five or more people may need a septic tank of up to 1,000 gallons. 

When choosing garbage disposals based on your family size, take into account how many people live in your household, the type of food you throw away, and the amount of food waste you generate on a daily basis. If you are a single person or a couple, a smaller, single-stage garbage disposal may be all you need. For a larger family, you may want to consider a larger capacity model with multiple stages or continuous feed disposal.

4. HorsePower

Horsepower is a key factor when buying garbage disposal for septic. Having the correct HP is essential to ensure that the disposal can properly break down and grind the waste materials without getting clogged or overwhelmed. 

A good rule of thumb is to select a disposal with a minimum of 0.5 HP, as this will be sufficient for most households. For those who produce more waste, a 0.75 HP disposal is recommended, as it will be able to handle larger loads. 

This will minimize the risk of clogs, by grinding the waste more quickly and efficiently. Additionally, if the disposal is too powerful, it can cause a strain on the septic system, leading to more frequent maintenance and repair.

5. Noise reduction

When buying a septic garbage disposal, consider noise reduction. Technology has come a long way in helping to minimize the noise from garbage disposal. Look for features like a sound shield dampening system that helps to absorb sound waves, reducing vibrations and minimizing the noise. 

Also, look for grinders with insulated grinding chambers that reduce noise levels by up to 60%. The motor should be enclosed in a quiet housing, which further cuts down on noise. Some garbage disposals also come with sound-absorbing rubber gaskets or foam insulation to further reduce noise. The noise from your disposal will be kept at bay by having features like these.

7. Compatibility

When it comes to choosing garbage disposal for septic, compatibility is an important factor to consider. First, it should be compatible with the septic tank size, meaning it should be capable of handling the amount of waste put into the tank. 

Furthermore, a properly sized garbage disposal with the right motor power and RPM speed is essential for breaking down food waste without overworking the motor or damaging the septic system. For a septic tank to process food waste, the disposal must also have the appropriate number of grind stages.

What Can You Put Down A Garbage Disposal With A Septic Tank? 

Septic tanks should only be used in conjunction with garbage disposals that can safely break down in the septic environment. Food scraps that are biodegradable should only be disposed of through garbage disposal connected to a septic tank. 

This may include small amounts of fruits and vegetables, eggshells, coffee grounds, and other soft food items. 

Consider running cold water while running the disposal to help break down the food and help the septic tank absorb the liquids. To keep your septic tank running smoothly, remember to have it pumped regularly.

What Things To Avoid Put Down In Garbage Disposal With A Septic Tank?

Garbage disposals should be used carefully when using a septic tank. Certain items can damage the septic tank and lead to costly repairs or replacements. Generally, it is best to dispose of anything that is not biodegradable. This includes items such as bones, eggshells, grease, oil, coffee grounds, fats, and oils. These items will not degrade in the septic tank and can cause clogging and other damage. 

In addition to avoiding non-biodegradable items, you should also avoid putting any metals, plastics, glass, diapers, paper towels, cigarette butts, and sanitary products down the garbage disposal. All of these items can cause damage to a clogged septic tank. 

If you are unsure about what can be safely put into the septic tank, it is best to err on the side of caution and avoid putting anything down the garbage disposal. Too much food waste can cause clogs in garbage disposals, so it’s still important to be mindful of how much you use.

In addition to avoiding certain items, proper maintenance of the septic system is essential for its longevity. Regular pumping of the septic tank is recommended, as it helps remove solid waste from the tank and keeps the system running smoothly. Septic tank additives such as enzymes can also help dissolve solid waste and reduce buildup. According to US EPA, Septic maintenance includes inspecting the entire system every 1 to 3 years and pumping the tank every 3 to 5 years.


What helps break down waste in a septic tank?

Bacteria in the septic tank help to break down the solid waste, fats, oils, and greases into smaller particles. The bacteria can be naturally occurring or added to the tank. The bacteria feed on the organic material and the by-products of their digestion are then flushed out of the tank. Aerobic bacteria, which require oxygen to survive, are best for breaking the septic waste down

What kills bacteria in septic tanks?

Septic tanks typically rely on naturally occurring bacteria and enzymes to break down the waste and keep the tank clean. However, there are several treatments available to kill bacteria in a septic tank, such as chlorine, hydrogen peroxide, and enzymes.

Baking soda is an another effective bacteria killer for septic tanks. It works by raising the pH levels in the tank, which creates an alkaline environment that is inhospitable to bacteria.

Are garbage disposals harmful to septic systems?

Yes, garbage disposals can be harmful to septic systems. The extra food waste can increase the number of solids in the tank and reduce the effectiveness of the septic system. It is important to be mindful when using a garbage disposal, as overuse can cause costly repairs and potential damage to the system.


A garbage disposal that works best for Septic Systems is one designed specifically for septic systems. This type of disposal is designed to grind up food waste, reduce odors, and help protect the environment by reducing what goes into the septic system. Such disposal is a great investment for anyone looking to reduce their environmental impact.

The InSinkErator Evolution Septic Assist is a great choice for septic systems, offering powerful grinding action and a large capacity, as well as some features that make it easier to maintain.

This model offers superior grinding power and a long-lasting design, making it ideal for septic tanks where power is limited. Additionally, its sound insulation technology ensures that noise is kept to a minimum, which is important for septic tank owners.

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