11 Best Toilet Options for Septic Tanks

Here comes a bummer: toilets and septic tanks don’t always get along.

You’ve got a septic system, but your toilet isn’t playing nice, right?

It’s a pain, like finding a bone in your chicken sandwich. 🐓

But hey, chin up!

We’ve all been there.

Plumbing woes are a part of life, just like stubbing your toe on the coffee table.

But enough of the problem talk.

Let’s jump right to the good stuff – a guide to the best toilet options for septic tanks.

No jargon, no fluff – just straight-to-the-point info that’ll have your bathroom running smoothly in no time.

All aboard the ‘fix-it’ train! 🚂💨

Top 11 Toilet Options For Septic Tanks

Here is the list of Best Toilet For Septic Tanks-

  • HOROW T0338W – Best Overall
  • American Standard Compact Cadet 3 FloWise 4 – Editor’s Choice
  • Kohler K-3999-0 Highline – Best Two-Piece Option
  • WOODBRIDGE T-0019-CH – Best Design
  • DeerValley DV-1F026 – Best Modern Standard
  • Winzo WZ5028 High-Efficiency Dual Flush Toilet – Best Dual Flush
  • American Standard 4515A157S.020 VorMax ActiClean Toilet – Best Self-Cleaning Feature
  • Woodbridge T-0019 Dual Flush High-Efficiency Toilet – Best One-Piece Design
  • Toto MS854114E#01 Eco Ultramax Elongated Toilet – Best Elongated Design
  • Niagara 77001WHCO1 Stealth 0.8 GPF Toilet – Best Ultra-High Efficiency Flush
  • Kohler 3810-0 Santa Rosa Comfort Height Elongated Toilet – Best Compact Design
Our #1 Recommendation: American Standard Compact Cadet 3 FloWise 4
  • Efficient water usage
  • Comfortable height
  • Strong flushing power


The HOROW T0338W is a standout in the realm of septic-friendly toilets.

Its sleek and modern design is not just about aesthetics; it’s a testament to its advanced functionality.

One of its major selling points is the dual flush system, allowing users to choose between a 0.8 GPF and a 1.28 GPF flush.

This feature not only promotes water conservation but also ensures a powerful flush every time, as evidenced by its impressive maximum performance flush score of 1000g.

Another notable feature is its comfort seat height, offering chair-height seating at 17.3 inches.

This design ensures ease of use, especially for those who might find standard toilet heights a bit challenging.

Moreover, the one-piece design means fewer crevices and joints, making cleaning a breeze and ensuring a longer lifespan for the toilet.

Key Specifications

  • Flush Type: Dual Flush (0.8/1.28 GPF)
  • Seat Height: 17.3 inches (Chair-height seating)
  • Design: One-piece elongated
  • Flush Performance: 1000g MAP testing score
  • Installation: Easy with included hardware


  • Efficient dual-flush system
  • Comfortable chair-height seating
  • Sleek one-piece design
  • High flush performance score


  • Price might be on the higher side for some

American Standard Compact Cadet 3 FloWise 4

The American Standard Compact Cadet 3 FloWise stands out as a top choice for homeowners with septic systems.

Its design ensures efficient water usage, aligning with the WaterSense label, which is a testament to its water conservation capabilities.

This toilet not only promotes septic system health but also plays a part in environmental conservation.

Its elongated bowl design ensures comfort, and the toilet’s height is aptly termed “”comfort height””, making it suitable for a broad range of users.

The toilet’s flushing power is commendable, ensuring solid waste removal efficiently.

Additionally, its design resists soil and odor, ensuring the bathroom remains fresh.

Key Specifications

  • Resists Soil and Odor: Yes
  • Resists Drainline Clogs: No
  • WaterSense Certified: Yes
  • Comfort Height: Yes
  • Bowl Shape: Elongated


  • Efficient water usage
  • Comfortable height
  • Strong flushing power


  • Doesn’t resist drainline clogs

Kohler K-3999-0 Highline Review

The Kohler Highline K-3999-0 stands out as a two-piece toilet that’s not just elegant but also septic-friendly.

Its design is tailored for those who prioritize both aesthetics and functionality.

The comfort height elongated bowl ensures extra coziness, extending out more than your typical round bowl.

Plus, it’s not just about looks; the single-flush gravity utilizes the force of gravity combined with a meticulously engineered tank, bowl, and trapway to produce a potent siphon during flushing.

This ensures a clean bowl after every use.

And speaking of clean, the Class Five flushing technology guarantees almost plug-free performance.

What’s more, it’s WaterSense certified, which means it’s all about water conservation without compromising performance.

And for those concerned about accessibility, it’s ADA compliant, meeting the standards set by the Americans with Disabilities Act.

Key Specifications

  • Bowl Height: 16-1/2 inches
  • Flow Rate: 1.28 gallons-per-flush
  • Water Area: 11-3/8″” x 8″”
  • Water Depth (From Rim): 5-3/8″”
  • Tank Width: 18-1/8″”
  • Tank Length: 8-5/8″”
  • Trapway Size: 2-1/8″”
  • Rough-In: 12 inches


  • 💧 Water-efficient design
  • 🚽 Comfort height for added ease
  • 🌀 Powerful Class Five flushing tech
  • 🌍 Environmentally friendly with WaterSense label


  • 🛠 Two-piece design might be trickier for some to install
  • 🪠 Seat sold separately

This toilet is a testament to Kohler’s commitment to blending style, comfort, and efficiency.

It’s a top pick for those looking to upgrade their bathroom while being mindful of the environment and their septic system health.

And with its award as the ‘Best Two-Piece Option’, it’s a choice you won’t regret.


The WOODBRIDGE T-0019-CH isn’t just a toilet; it’s a statement piece.

With its sleek, modern design, it’s no wonder it’s been awarded the ‘Best Design’ title.

This one-piece toilet boasts a luxurious, contemporary look that seamlessly blends with various bathroom decors.

Its skirted trapway not only adds to its aesthetic appeal but also makes cleaning a breeze.

The soft closing seat, a standard feature, ensures no loud slamming and offers added safety, especially in households with kids.

Water conservation is at the forefront of its design.

The toilet is equipped with a powerful, yet water-efficient flushing system.

It’s a high-efficiency toilet that aligns with the WaterSense label, ensuring optimal water usage without compromising on performance.

This makes it a top pick for those conscious about their environmental impact and looking to maintain septic system health.

Key Specifications

  • Type: One-piece toilet
  • Design: Skirted trapway
  • Flushing System: High-efficiency, WaterSense labeled
  • Seat: Soft closing
  • Style: Modern, contemporary


  • Stylish, modern design
  • Efficient water usage
  • Easy to clean
  • Quiet seat closing


  • Premium price point
  • Requires careful installation

DeerValley DV-1F026 Ally Dual Flush Elongated One-Piece Standard-Size Toilet (Seat Included)

The DeerValley DV-1F026 stands out as a modern standard in the realm of septic-friendly toilets.

Its ultra-high efficiency ensures water conservation, offering a choice between a full or partial flush.

This maximizes water savings, aligning with the pressing need for water-efficient toilets in today’s world.

Constructed from high-quality ceramic, this toilet boasts resistance against scratches and stains.

It’s designed to maintain its pristine white appearance over time, ensuring longevity and aesthetic appeal.

The one-piece design integrates the tank and bowl, creating a seamless and easy-to-clean structure.

This design not only enhances its visual appeal but also simplifies maintenance.

Key Specifications

  • Material: High-quality ceramic
  • Design: One-piece, integrating tank and bowl
  • Flush Type: Dual flush (0.8 GPF for liquids or 1.28 GPF for solids)
  • Finish: Smooth, long-lasting white glaze
  • Dimensions: 27.95” H X 14.09” W X 28.74” L
  • Warranty: One-year limited


  • Water-saving dual flush system
  • Stain and scratch-resistant
  • Easy-to-clean one-piece design
  • Comes with pre-installed seat and flush valve


  • Higher price point than some models

This toilet not only addresses the need for water conservation but also ensures septic system health.

Its dual-flush system is a testament to its commitment to environmental impact.

With its sleek design and high efficiency, the DeerValley DV-1F026 is a top recommendation for those prioritizing both form and function.

Winzo WZ5028 High-Efficiency Dual Flush Toilet

Let’s talk toilets, specifically the Winzo WZ5028.

This bad boy is a game-changer for septic systems.

It’s a one-piece toilet, which means cleaning is a breeze.

No nooks and crannies where gunk can hide.

Plus, it’s got an elongated design.

So, you’re sitting pretty—literally.

Now, let’s get to the juicy part: water efficiency.

This toilet is a champ at water conservation.

It offers a dual flush system that uses just 0.8 to 1.6 gallons per flush.

So, you’re not just flushing away water (and money). You’re being smart about it.

It’s like having a Prius for your bathroom.

And let’s not forget the soft-closing seat.

No more accidental SLAMS in the middle of the night.

It’s the little things, ya know?

Plus, it’s got a 17-inch seat height.

So, whether you’re tall, short, or somewhere in between, you’re covered.

Key Specifications

  • Design: One-piece, elongated
  • Flush Type: Dual flush
  • Water Usage: 0.8 to 1.6 gallons per flush
  • Seat Height: 17 inches
  • Special Features: Soft-closing seat


  • Water-efficient dual flush
  • Easy to clean one-piece design
  • Soft-closing seat adds comfort
  • Ideal 17-inch seat height


  • Not the cheapest option
  • May not fit all bathroom styles

The American Standard VorMax ActiClean Toilet stands out with its self-cleaning feature, ensuring a hassle-free experience for homeowners.

The cleaning cartridge, cleverly concealed within the lid, offers two cleaning cycles: Deep Clean and Quick Clean.

This feature not only ensures a sparkling bowl after every flush but also reduces the need for manual cleaning.

VorMax technology is another highlight.

This patented dual injector flushing system delivers a jetted flush that’s said to clean twice as effectively as a regular toilet.

And while it packs a punch in cleaning power, it’s gentle on the environment.

The high-efficiency design uses a mere 1.28 gallons per flush, promoting water conservation and aligning with the WaterSense label criteria.

Key Specifications

  • Finish: White
  • Cleaning Cycles: Deep Clean and Quick Clean
  • Flushing System: VorMax dual injector
  • Water Usage: 1.28 gallons per flush
  • Additional Feature: Includes one cleaning cartridge


  • Powerful jetted flush
  • Water-efficient design
  • Concealed cleaning cartridge
  • Dual cleaning cycles


  • Bowl sold separately
  • Price might be on the higher side for some

Woodbridge T-0019 Dual Flush High-Efficiency Toilet Review

The Woodbridge T-0019 stands out with its sleek, space-saving design.

This one-piece toilet complements various bathroom decors, and its compact size makes it suitable even for smaller bathrooms.

The design isn’t just about aesthetics; it’s also about functionality.

The skirted trapway not only gives it a modern look but also makes cleaning a breeze.

The toilet boasts a fully glazed siphon flushing design.

This ensures a powerful yet quiet flush every time.

And for those midnight trips to the bathroom, you won’t have to worry about waking up the entire household.

Plus, this design minimizes the chances of leaks or clogs, ensuring long-term reliability.

Key Specifications

  • Tank Size: 1.28 gallons
  • Weight: 118 pounds
  • Dimensions: 28.5 x 14.5 x 27 inches
  • Flush System: Dual Flush 1.0/1.6 GPF, averaging at 1.28 gallon flush
  • Certifications: UPC, CSA, WaterSense
  • Warranty: Five years on porcelain parts, one year on flushing mechanism & soft closing toilet seat


  • 💧 Water-efficient dual flush system
  • 🚽 One-piece sleek design
  • 🤫 Quiet yet powerful flush
  • 🧽 Easy to clean skirted trapway
  • 🛠️ Comes with all installation parts


  • 🏋️ Heavy unit, might need two people for installation
  • 🧐 Installation can be tricky due to hidden bolt holes

The Woodbridge T-0019 is not just a toilet; it’s a statement of efficiency and design.

It conserves water, looks great, and functions seamlessly.

Whether you’re environmentally conscious, looking to save on water bills, or just want a reliable and stylish toilet, the T-0019 is a top contender.

And while it’s relatively new in the market, the positive feedback from users and its list of features make it a worthy addition to any bathroom.

Just remember, every trip to this toilet is not just a call of nature; it’s an experience in luxury and efficiency.

Toto MS854114E#01 Eco Ultramax Elongated Toilet

The Toto Eco UltraMax stands out with its sleek one-piece design, enhancing the aesthetics of any bathroom.

This design isn’t just about looks; it’s practical.

The absence of gaps between the tank and bowl eliminates hiding spots for dirt and debris, making cleaning a breeze.

Plus, there’s no risk of leaks from bolts or gaskets, a common issue in two-piece toilets.

This toilet proudly carries Toto’s mark of excellence: “People Planet Water.” It’s not just a toilet; it’s a commitment to environmental responsibility.

The E-Max flushing system is a testament to this, featuring a 3” wide flush valve, an extra-large siphon jet, and a spacious trapway.

This combination ensures a powerful flush, using only 1.28 gallons of water.

It’s water-efficient, meeting the standards for EPA WaterSense®, California’s CEC, and CALGreen requirements.

Key Specifications

  • Material: Vitreous China
  • Flush Technology: E-Max
  • Gallons Per Flush: 1.28
  • Bowl Height: 14.63 in.
  • Flush Valve Size: 3 in.
  • Trapway: 2.13 in.
  • Width: 16.5 in.
  • Seat: SoftClose® included
  • Flush Lever: Left-hand chrome


  • 💧 Water-efficient design
  • 🌍 Eco-friendly, meeting multiple environmental standards
  • 🚽 One-piece design for easy cleaning
  • 🌀 Powerful E-Max flushing system
  • 🪑 SoftClose seat prevents slamming


  • 🏷️ Premium price point
  • 📏 Might be a bit tall for some users

Kohler 3810-0 Santa Rosa Comfort Height Elongated Toilet

The Kohler Santa Rosa is a testament to modern toilet design that doesn’t compromise on functionality.

Its compact elongated bowl ensures added comfort, even in spaces where only a round-front bowl might fit.

The one-piece design not only gives it a sleek look but also makes cleaning a breeze.

A standout feature is the AquaPiston technology.

This patented flush engine allows water to flow into the bowl from all sides, ensuring a powerful and virtually plug-free flush.

It’s a game-changer in the world of toilets.

The canister design is durable and has 90% less exposed seal material than traditional designs, reducing the chances of leaks.

The Comfort Height feature is a thoughtful addition.

It offers chair-height seating, making the act of sitting down and standing up easier for most adults.

Plus, the included seat is a marvel in itself.

It’s designed for quick cleaning and features technology that ensures a gentle, noiseless close.

Key Specifications

  • Resists Soil and Odor: Yes
  • Resists Drainline Clogs: No
  • WaterSense Certified: Yes
  • Comfort Height: Yes
  • Bowl Shape: Elongated


  • Powerful AquaPiston flush
  • One-piece, easy-to-clean design
  • Comfort Height seating
  • Water-efficient
  • Quiet seat closing


  • Might be pricier than other models
  • Not resistant to drainline clogs

Maintaining Septic Systems of Toilets: Best Practices

Maintaining your home’s septic system is more straightforward than it sounds.

A bit of mindfulness can go a long way in ensuring its longevity.

Let’s dive into some best practices to keep your septic system in top shape.

Avoiding Harmful Chemicals

Be wary of the cleaning agents you use. Harsh chemicals, especially bleach, can disrupt the beneficial bacteria in your septic system.

Instead of drain cleaners, which can harm both the bacteria and the tank, consider using a toilet drain snake.

And remember, toilet bowl cleaners often contain bleach, which is a no-no for septic systems.

There are plenty of natural or plant-based cleaning products that are both effective and septic-friendly.

Using Septic-Safe Products

Your toilet isn’t a trash can. Only flush toilet paper and human waste.

Items like tissues, diapers, and even certain plush toilet papers can clog and damage your system.

When thinking about your kitchen sink, avoid washing down coffee grounds, eggshells, and oils.

These can clog pipes or even disrupt the septic system’s balance.

If you’re using a garbage disposal, ensure you’re only grinding biodegradable food.

Spread out your laundry and dishwashing days. Overloading your septic system with too much water in a short time can stress it out.

Instead, do full loads a few times a week, ensuring you’re not wasting water and giving your system time to treat the wastewater.

Know your system. Understand how your septic system works and where it’s located.

Regular maintenance, like pumping out solids, is essential.

On average, a household septic system should be pumped every three to five years.

Protect your drainfield. This means no parking or driving over it.

Ensure gutters and sump pumps are directing water away from this area.

Also, be cautious about planting trees or shrubs nearby, as their roots can interfere with the system.

By following these practices and being mindful of what goes into your septic system, you’ll ensure its health and longevity, all while being environmentally conscious.

Remember, a little care goes a long way in preventing big problems down the road.

Impact of Toilet Types on Septic Health

The Toilet-Septic Connection

Every flush counts.

The type of toilet you choose plays a pivotal role in the health of your septic system.

Septic-friendly toilets are designed to be gentle on the system, ensuring longevity and efficiency.

Water Conservation: More than Just Savings

Water-efficient toilets aren’t just about reducing your water bill.

They’re about preserving the health of your septic system.

High water usage can overwhelm a septic system, leading to overflows and reduced system longevity.

On the flip side, water-saving toilets, especially those with the WaterSense label, ensure that your septic system isn’t flooded with excess water.

To Flush or Not to Flush

Single-flush, dual-flush, pressure-assist… the list goes on.

Each type has its own merits.

Dual-flush toilets, for instance, give you the option to use less water for liquid waste, which can be a boon for septic system health.

Pressure-assist toilets, while powerful, can use less water than you’d think.

But remember, it’s not just about the type; it’s about choosing a model that’s septic-friendly.

The Chemical Culprit

Beyond the toilet type, what goes down matters.

Harmful chemicals can wreak havoc on a septic system.

Even “flushable” wipes can be a menace.

They might go down easily, but they don’t break down as toilet paper does.

The result?

Potential blockages and a stressed septic system.

The Right Choice

When hunting for the perfect throne, look for septic-safe products.

A toilet buying guide can be handy, but always keep septic system care in mind.

Whether it’s one-piece toilets, two-piece toilets, or those with impressive flushing power, the key is to ensure they’re gentle on your septic system.

Remember, a happy septic system means a happy home.

And the right toilet can make all the difference.

Choose wisely, and your septic system will thank you.

Final Say So!

Alrighty then!

Let’s wrap it up.

You don’t have to play the guess-who’s-good-for-my-septic game anymore.

This comprehensive guide did all the hard work, so you don’t have to.

With a list full of top-notch crappers tailored for septic tanks, it’s time to pick your throne and reign supreme in your bathroom.

Remember, every flush matters, especially with septic tanks in the picture.

So choose wisely, save water, and ensure that septic harmony lasts a lifetime.

Say goodbye to plumbing dramas and hello to bathroom nirvana! 🚽✨🎉

Our #1 Recommendation: American Standard Compact Cadet 3 FloWise 4
  • Efficient water usage
  • Comfortable height
  • Strong flushing power


What kind of toilet is best for septic tanks?

Low-flow toilets with efficient flushing mechanisms are best for septic tanks as they reduce the amount of water entering the septic system.

Are dual flush toilets better for septic systems?

Yes, dual flush toilets are better for septic systems because they offer a choice between a low-volume flush for liquid waste and a full-volume flush for solid waste, conserving water and reducing strain on the system.

How do I keep my toilet clean with a septic tank?

Use septic-safe cleaning products, avoid bleach and harsh chemicals, and consider using a toilet brush for regular cleaning. It’s also essential to have regular septic tank maintenance and inspections.

Can toilet be built over septic tank?

No, it’s not advisable to build a toilet directly over a septic tank due to potential access, maintenance, and safety issues.

What are the disadvantages of a septic tank toilet?

Disadvantages include potential for backups if not maintained, the need for regular pumping, and limitations on the type of cleaning products that can be used.

Do you need a special toilet for septic tank?

No, you don’t necessarily need a special toilet for a septic tank, but it’s beneficial to use a water-efficient model to reduce strain on the system.

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Steven Bosque

Dale Cogburn

Hi, I’m Dale Cogburn! I’m passionate about helping people get the most out of their bidets. I’m an expert on all things related to bidets, from installation and maintenance to product reviews. I’ve been using and researching bidets for over 10 years.

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