Best Toilet for Septic Tanks – Our Top Picks

Best Toilet for Septic Tanks

Properties not connected to the central sewage system have septic tank systems that provide quick on-site sewage treatment solutions. And having a toilet that is compatible with such systems is crucial. Thankfully, there are several high-quality toilets designed specifically for septic tanks.

This guide explores the best toilet for septic tanks, highlighting their features and benefits. Whether you’re looking for a sleek and modern design or a classic and timeless look, we’ve got you covered. So, let’s dive in and find the perfect toilet for your septic tank system.


HOROW T0338W toilet for septic tank

Our Top Pick
HOROW T0338W

Read Review



What Are Septic Tank Systems

Septic tank system explained 1
Image: Minnesota Pollution Control Agency

Septic tank systems are decentralized sewage treatment systems commonly used in areas without access to centralized sewer systems. The primary function of a septic tank system is to treat and dispose of household wastewater, which includes water from toilets, showers, sinks, and laundry.

The process can be broken down into the following key stages:

Wastewater Collection: All wastewater generated in a household is channeled into a buried septic tank.

Separation and Digestion: Inside the septic tank, solid waste materials settle to the bottom, while oils and greases float to the top. The middle layer, known as effluent, contains liquid waste.

Treatment: The liquid effluent is then discharged into a drain field, where it undergoes further treatment. Here, naturally occurring bacteria and microorganisms break down the organic matter in the effluent, rendering it less harmful to the environment.

Soil Filtration: The final stage involves the effluent percolating into the soil, which acts as a natural filter, further purifying the water before it rejoins the groundwater.

Benefits of Septic Friendly Toilets

Septic-friendly toilets offer many advantages. Let’s explore these benefits, underscoring the critical role these toilets play in the health and efficiency of septic systems.

Reduced Water Usage

Septic-friendly toilets are designed with water efficiency in mind. Low-flush and dual-flush models, for instance, significantly reduce water consumption with each flush. This efficiency translates into lower water bills for homeowners and a reduced burden on the septic system.

Minimizing Septic System Maintenance

A septic system is an investment in the long-term well-being of a property. Septic friendly toilets play a pivotal role in safeguarding this investment by reducing the frequency of maintenance and the risk of system failures.

Traditional toilets often necessitate more frequent septic tank pumping due to excessive water consumption and inefficient waste breakdown. By opting for septic-friendly toilets, homeowners can save both time and money.

Environmental Impact

Septic systems release nitrogen into the environment, which can contribute to groundwater contamination and adverse effects on local ecosystems. Septic friendly toilets, through their water efficient design, reduce the volume of effluent entering the drain field, ultimately decreasing the nitrogen load on the surrounding environment.

Long-Term Savings

Septic system failures can be both disruptive and costly. Septic friendly toilets, by preventing overloading and system strain, contribute to the avoidance of costly repairs or system replacements. This translates to long-term savings for homeowners.

By choosing septic friendly toilets, homeowners not only ensure the longevity of their system but also add value to their property.

Understanding the multifaceted benefits of septic-friendly toilets is paramount in making an informed choice. These toilets not only contribute to the longevity and efficiency of septic systems but also align with responsible water management and environmental stewardship.

What to Consider While Buying Toilet For Septic Tanks

When it comes to buying a toilet for septic tanks, there are several factors to consider to ensure that you get the best value for your money. Here are some essential things to keep in mind:

Water Usage (GPF)

Septic tanks require low-flow toilets that use less water per flush, typically 1.6 gallons per flush (GPF) or less. However, newer models of toilets use even less water, with some using as little as 1.28 GPF. These low-flow toilets are not only eco-friendly but also help to reduce your water bills.

Flushing System

Toilets for septic tanks come with different flushing systems, including single, dual, or pressure-assisted flushing systems. 

● Single-flush toilets use the same amount of water for every flush, while

● Dual-flush toilets offer two flushing options, one for liquid waste and another for solid waste.

Pressure-assisted flushing systems use air pressure to force water into the bowl, making them more efficient and effective at removing waste.

Related: Best Tankless Toilets

Cleaning and Maintenance  

A toilet that is easy to clean and maintain is essential for septic tank systems. Look for toilets with glazed surfaces that are self-cleaning, simplifying maintenance. The toilet bowl should be durable, with a smooth finish that resists staining and discoloration.

Additionally, consider toilets with concealed trapways, as they are easier to clean and maintain than exposed trapways and prove to be the best toilets for septic tank systems.

WaterSense Certified

Consider purchasing a toilet that is Water Sense certified. This certification ensures that the toilet uses less water without compromising performance, a feature required in toilets for septic tanks. WaterSense-certified toilets are also eco-friendly, making them an excellent choice for those who want to reduce their environmental impact.

5 Best Toilets for Septic Tanks

Focusing on features that define a toilet best for septic tank systems, we are happy to share that we found five such toilets.

Read on and decide which one will be a perfect addition to your septic tank system.

Our Choice: HOROW T0338W

HOROW T0338W toilet for septic tank

The HOROW T0338W is a popular toilet model that is widely regarded as one of the best options for households with septic tanks.

This toilet is designed with a powerful dual flush system that allows users to choose between a partial or full flush, making it highly efficient in terms of water usage. The partial flush option uses just 0.8 gallons of water, while the full flush option uses 1.28 gallons, which is still significantly less than older toilet models.

In addition to its water-saving capabilities, the HOROW T0338W is also designed with a fully glazed trapway that helps to prevent clogs and blockages. This is particularly important for households with septic tanks, as clogs can lead to backups and other issues that can be costly to repair.

It is an ADA-Compliant toilet with a seat height of 17.3 inches, making toilet visits easier with strainless sitting and standing. It also has a WaterSense certification that makes this toilet reliable and eco-friendly.

Another key feature of the HOROW T0338W is its sleek and modern one-piece design, which makes it a great addition to any bathroom. The toilet comes with a quick-release soft-closing seat that adds an extra level of convenience and comfort.

Related: Horow Toilet Reviews

Features  

Type: One-Piece

GPF: 0.8/1.28 GPF

Flush system: Gravity Flush

Pros

Eco-friendly toilet with dual flush technology

It has a fully glazed trapway that helps to prevent clogs and blockages.

The one-piece design with a quick-release seat makes it easy to clean.

It is an ADA-Compliant toilet with a seat height of 17.3 inches.

Soft-closing seat adds an extra level of convenience.

Cons

This toilet has no cons.

American Standard Compact Cadet 3 FloWise 4

American Standard Compact Cadet 3 Flowise 4 Toilet

The American Standard Compact Cadet 3 FloWise 4 is an exceptional toilet model that is specifically designed for septic tank systems.

This one-piece toilet features a compact, elongated design that is available in three decent colors: white, bone, and linen so that you can style your bathroom according to your taste and add a touch of decency.

This toilet requires minimal maintenance. The EverClean Surface technology of the toilet bowl ensures that it remains clean and hygienic, and the one-piece design has no gaps for the dust to settle.

The slow-close seat and lid provide silent, no-slam convenience, adding to the overall user experience. The American Standard Toilet is also ADA-compliant, with a right-height seat that makes it easier for people of all ages and abilities to use.

The toilet uses FloWise technology, which ensures the highest level of water conservation available, using just 1.28 gallons per flush. The Cadet 3 flushing system and glazed trapway provide powerful flushing performance, with a 1000 grams MaP score. The toilet is also WaterSense certified, making it an eco-friendly choice for any household.

Overall, the American Standard Compact Cadet 3 FloWise 4 is an excellent choice for anyone looking for a high-quality, efficient, and effective toilet, particularly for households with septic tank systems.

Related: Best toilet for small bathroom

Features   

Type: One-Piece

GPF: 1.28 GPF

Flush system: Gravity Flush

Pros

Available in three decent colors: white, bone, and linen.

The EverClean Surface technology of the toilet bowl ensures that it remains clean and hygienic.

The slow-close seat and lid provide silent, no-slam convenience.

The American Standard Toilet is also ADA-compliant.

The FloWise technology ensures the highest level of water conservation available.

The Cadet 3 flushing system and glazed trapway provide powerful flushing performance.

Cons

This product has no cons.

Kohler K-3999-0 Highline

Kohler Highline Arc Toilet

The Kohler K-3999-0 Highline is a two-piece toilet model perfect for septic tank systems and stands out for its exceptional features and performance.

Featuring a comfortable seat height, this toilet is designed to provide users of all ages with a more convenient and comfortable experience. In addition to its comfortable seat height, this model also includes a large, elongated bowl for maximum comfort and efficiency.

This amazing toilet is made from vitreous china material, providing an ultra-durable and hygienic surface that can be easily cleaned using standard methods.

The Kohler K-3999-0 Highline is designed for high performance, with a 1.28 gallons per flush rate that meets strict EPA guidelines for water conservation.

In addition, the Class Five flushing technology of this toilet provides powerful flushing performance, ensuring that waste is effectively removed from the bowl with every flush.

It also comes with three pre-installed tank bolts, making installation quick and easy. The left-hand trip lever adds to the overall user convenience.

With its combination of comfort, high performance, and water conservation, this toilet is perfect for houses with septic tank systems.

Related: Best Kohler Toilets

Features   

Type: Two-Piece

GPF: 1.28 GPF 

Flush system: Gravity Flush

Pros

It features comfort seat height.

This model includes a large, elongated bowl for maximum comfort and efficiency.

Vitreous china material provides an ultra-durable and hygienic surface.

Meets strict EPA guidelines for water conservation with 1.28 GPF

The Class Five flushing technology provides powerful flushing performance.

Comes with three pre-installed tank bolts, making installation quick and easy.

Cons

The toilet seat is sold separately. 

WOODBRIDGE T-0019-CH

WOODBRIDGE T 0019

The WOODBRIDGE T-0019-CH is a remarkable one-piece toilet that stands out among the best toilets for septic tanks. Its exquisite design and impressive features make it an excellent choice for homeowners who desire a toilet that combines functionality and elegance.

The seat height of this toilet is 16.5 inches from floor to rim, ensuring maximum comfort for users of all ages. The siphon flushing and fully glazed flush systems make it highly efficient and eco-friendly.

Its sleek look and ability to complement modern, craftsman, and traditional styles make it an excellent addition to any bathroom. At the same time, the concealed trapway ensures that no large mounting holes or ugly plastic caps are visible, giving it a polished look.

The timeless, sophisticated, and flattering chrome-plated top button adds a touch of class to the toilet’s design. Its completely smooth and easy-to-wipe surface makes cleaning a breeze.

The WOODBRIDGE T-0019-CH comes with a high-end soft-closing toilet seat with stainless steel durable seat hinge, ensuring durability and longevity.

With exceptional features, beauty, and functionality T-0019-CH is a top-of-the-line toilet. It is the best toilet for septic tanks because of its less water usage, convenience, and low maintenance.

Related: Woodbridge Toilets

Features

Type: One-Piece

GPF: 1.28 GPF

Flush system: Gravity Flush

Pros 

ADA-Compliant toilet with a seat height of 16.5 inches

It can complement different styles like modern, craftsman, and traditional.

The WOODBRIDGE T-0019-CH comes with a high-end soft-closing toilet seat.

The siphon flushing and fully glazed flush systems make it highly efficient and eco-friendly.

The concealed design gives a polished look with no bolts and caps visible.

The smooth surface makes it easy to clean.

Cons

T-0019-CH has no cons.

DeerValley DV-1F026 

DeerValley DV 1F026 Ally Dual Flush Toilet

DeerValley DV-1F026 is a reliable and efficient toilet that combines style, comfort, and convenience. It is an excellent investment for homeowners looking for a toilet that is easy to maintain, highly efficient, and easy to install.

This modern standard one-piece toilet boasts an ADA height, making it easily accessible and comfortable for all users. Its stylish design adds a touch of elegance to any bathroom, while its white glazed surface is self-cleaning, simplifying maintenance.

In addition to its comfortable seat height and stylish design, the highly efficient dual-flush toilet with 0.8 and 1.28 GPF makes you a responsible citizen of the globe. It ensures that you save water and money without compromising on performance.

The DeerValley DV-1F026 is also incredibly easy to install, as it comes with a supply line connector (adapter) for you to connect the supply line and toilet. The pre-installed soft-closing toilet seat and flush valve make installation a breeze.

The all-in-one package includes a high-quality wax ring, floor bolts, and installation instructions, ensuring that you have everything you need for a hassle-free installation.

The DeerValley DV-1F026 is undoubtedly one of the best toilets for septic tank systems.

Features   

Type: One-Piece 

GPF: 1.28 GPF

Flush system: Gravity Flush

Pros

This modern standard one-piece toilet boasts an ADA height.

The white glazed surface is self-cleaning, simplifying maintenance.

The highly efficient dual-flush toilet with 0.8 and 1.28 GPF makes you a responsible citizen of the globe.

It has a supply line connector to connect the supply line and toilet.

The package includes a high-quality wax ring, floor bolts, and installation instructions.

Cons   

This all-in-one package has no cons.

In Conclusion

By embracing septic-friendly toilets, homeowners not only secure the continued functionality of their septic systems but also promote the well-being of their properties and the environment at large. The choice to install on of these toilets from above is a testament to a commitment to sustainable water management, long-term financial prudence, and environmental stewardship.

Frequently Asked Questions

Here are few of the most frequently asked questions about Toilets for septic tank system.

Can I use a regular toilet with a septic system?

While you can use a regular toilet with a septic system, it’s recommended to use a septic-safe toilet to avoid potential issues.

Do low-flow toilets work well with septic systems?

Yes, low-flow toilets are compatible with septic systems and are often a good choice to conserve water.

How long do septic-safe toilets typically last?

With proper maintenance, septic-safe toilets can last for many years, often 15 to 25 years or more.

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