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Best Low-Flow Toilets for Water Saving 2019 (Top 10 Choices)

KOHLER K-3609-0 Cimarron 1.28 GPF Toilet
American Standard 2315.228.020 Baby Toilet
Ellegantz GenieBidet Seat - Natural Water Spray
TOTO CST412MF.01 Aquia Dual Flush Toilet
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Are you looking for ​the best low flow toilet without sacrificing on performance?

Well, a good suggestion for you is the Low-Flush Toilet. Its modern fixture reduces water bill while serving the environment by saving ample amount of water.

In this guide, we will introduce you with our findings about top rated water efficient toilet in the market. These are the good water saving toilets in the market that offers additional features like powerful flush, easy cleaning, quick installation and premium style.

Our Top Picks Low-Flow Toilet

Image

Name

Material

Water Consumption

Seat Included

Niagara 77001WHC01

Vitreous China, Metal

0.8 GPF

No

Kohler K-3988-0 Toilet

China

1.6 GPF

No

Penguin 527 ADA Dual Flush

--

--

---

American Standard 2887.216.020

Vitreous China

1.6 GPF

No

TOTO CST454CUFG#01

--

1 GPF

No

TOTO CST412MF.01

Vitreous China

1.6 GPF

No

KOHLER K-3987-47

China

1.6 GPF

No

Saniflo 023

Porcelain Toilets

1.6 GPF

Yes

Toto MS920CEMFG#01

Ceramic

1.28 GPF

Yes

Nature’s Head Composting Toilet

--

No Water

--

Our in depth toilet reviews will give you all the ins and outs that you should know to make a proper decision. And, do you know how to unclog a toilet?

If not, then find out the best method at the finishing of this guide.

Our Top 10 Low-Flow Toilet Reviews

Here is our top ten picks for the low-flow toilet in the market. Let’s dive in for the details.

1. Niagara 77001WHC01 Stealth 0.8GPF

Niagara has the most effective flush that makes it the top-rated water efficient toilet among all the best low flow models. The toilet comes with an ADA compliant technology. It uses around .8 gallons per flush which is half the requirement from the regulatory body.

The Ultra Efficient Flush ​Mechanism delivers a powerful flow of water while assuring great performance. The air transfer tube in the tank stores air and creates a trap way permitting the toilet for a powerful yet silent flush.

As the name suggest, it has a stealth dual flush ​mechanism that facilitates to use both full or half flush according to your satisfaction. A half flush releases only 0.5 gallons of water to handle liquid waste, where a full flush takes care of the solid waste.

There is a stealth seal instead of the traditional flapper into the water tank. This stealth seal provides equal distribution of water while creating pressure downward with a 3600 flow of water. These feature saves up to 77% more water than most of the traditional toilets.

The bowl is specially designed with the features like rim holes and siphon jet that ensure proper cleaning of the bowl after use. When the flush button is pressed, the water flows through some strategically placed holes around the rim surface to wash the bowl.

Its siphon jet hole is placed in the bottom of the bowl which creates powerful forces to push the water along with the waste to the trap way. This feature is very helpful against solid particles.

Producers have used vitreous china ceramic in the toilet that gives it the shiny white look. This metal doesn’t allow the waste adhering to the surface of the bowl that ensures the highest cleanliness.

Pros

  • Ultra-high efficiency flush 0.8 GPF
  • Floor mount
  • Dual flush
  • ADA compliant
  • Quiet flush

Cons

  • No seat included

2. Kohler K-3988-0 Toilet, White

Kohler K-3988-0 toilet comes with the water efficient and powerful dual flush technology. Its dual flush offers the choice of 1.1 or 1.6 gallons ​each flush with an easily accessible left hand trip lever.

The dual flush technology allows you to choose between full or partial flush. This feature enables you to use water according to your need. Its powerful flush can easily move wastes from the bowl to the trap way providing you a clean toilet to use.

This model consists of a combination of K-4198 bowl and the K-4458 tank. The bowl is elongated in a shape that offers added room and comfort. Water tank is designed like a traditional toilet, where upper part is allocated for water storage.

The toilet is certified with the EPA WaterSence certification as it saves about 30% of water per flush. This adds more than 4000 gallons water saving per toilet, per year.

Its glazed trap way is 2-1/8 inch which provides a clean environment. The large diameter of the trap way reduces the chances of clogging and overflow of waste which is one of the best. The toilet is produced with vitreous china ceramic which is durable and smooth to use. You will find its white outer surface quit stylish.

Floor mount installation of this toilet has increased the ability to carry extra load. Three bolts are used to install it with the floor. These bolts provide support and stability to the toilet.

Pros

  • Left hand nested trip lever
  • Dual flush​
  • Elongated bowl
  • Wellworth dual flush
  • Coordinates with other products in the Wellworth collection

Cons

  • Seat not included
  • Poor quality assurance

3. Penguin 527 ADA Dual Flush 1.28 Gpf, White - No Risk for Overflow

This is one sturdy toilet for heavy use. You got guests in house or your house is full of kids, this is the solution for your toilet problems. This will work finely in private office buildings where there are lots of people using the toilet. Even after taking that toll, it will not clog. This is a rare event under extreme use.

It is ADA compliant, certified by Watersense, and marked with the industry’s highest appreciation. This two-piece toilet will easily fit with a 12" rough-in. There is a secondary sewage system to channel the nasty water in case the main line is overloaded from heavy use of the toilet.

When the trap way is blocked, the water rises up in the bowl till it touches the primary overflow holes. It enables the water to drain through a secondary path bypassing the clog.

Only in an extreme case, the primary overflow holes may block and the water can reach up to the holes under the rim. Then, the water will drain through a hidden inlet to the secondary drain system.

This model of penguin toilet is a two-piece model with a round sit. It offers clean lines which are considered very stylish. Penguin has captured the market with its advanced drainage. This is the option for which people spend their money on it.

Another essential feature to keep in mind is, the toilet prevents water from overflowing which means no clogging. When intense loads take place, the dual drain system is very useful and effective.

Pros

  • ADA compliant toilet
  • Double flush ​mechanism
  • Water don’t overflow for advanced anti-clogging features

Cons

  • The flapper may cause issue

4. American Standard 2887.216.020

This toilet really steps up to the middle-class American standards. You will have your water bill for the toilet cut in half. This just not only goes easy on your pocket but also is good for the environment. Clean water is becoming a scarce mineral. We have to be careful before underground reserves start to vanish.

There is a double button actuator on the top of the water tank. Pressing those two will allow 1.6 gallons of water to come rushing through the line into the bowl to clean them. Press one of them to clean the lighter waste. A single button releases about half the full capacity of water.

This particular toilet is an elongated one, but if your toilet is congested, you can use the round one. It saves a lot of space while giving you almost the same service. The rim of the toilet is 16 inches high from the ground. This is a very comfortable height especially considering the job that is going to be done sitting on it.

Another cool feature about this toilet that it comes with a slow close seat and lid. Both of the movable parts; the seat and the lid will come down slowly and settle when you get up from the toilet. These two also feature a one-push release button to make cleaning a lot easier.

This toilet also can keep itself clean efficiently. It is equipped with a power wash rim. This feature cleans the rim and surface of the bowl every time you flush it. It also has a large water surface area.

It resists all kinds of mildew, bacteria, and mold. So, no stain or odor problems. It meets the environmental protection agency’s guideline and even does better in some areas.

Pros

  • Elongated two piece siphonic dual flush toilet
  • Low consumption of water
  • Strategically placed rim holes
  • Chrome plated top mounted push button

Cons

  • Large families will find it problematic

5. TOTO CST454CUFG#01 Drake II 1G Two-Piece Toilet

Toto Drake 2 1G has come with an elongated bowl and attractive two-piece design. The combination of water tank and bowl gives it a stylish look. Its elongated bowl provides added space which is very comfy to use.

CeFiONtect Glaze element added in the bowl surface prevents debris from sticking to ceramic surfaces that enables easier cleaning with less effort. Its computer designed trap way is fully glazed. This feature ensures your toilet’s cleanliness even after a larger scale of use.

Tornado Flush™ Flushing System provides a powerful flush. You are going to love its cleaning ability which washes away the waste in a single flush. It is designed to use 1 gallon of water per flush which saves your water bill better than other traditional low-flow toilets.

You can easily flush the toilet using its chrome trip lever. The lever gives the toilet a premium look. It is easily accessible as it is positioned at the left side of the water tank.

TOTO knows that you need a toilet with a balanced height which can be used in a family consisting of children, adults and aged persons. So they have designed the toilet with a universal height. Every member of your family will find it easy and comfortable to use.

The designer added the ADA compliance technology that enables a disabled person to use the toilet without facing any difficulty.

Pros

  • Tornado Flush™ Flushing System
  • Chrome Trip Lever
  • Universal Height
  • CeFiONtect Glaze coated ceramic
  • Elongated bowl with added room and comfort

Cons

  • Clogging is a common problem

6. TOTO CST412MF.01 Aquia Dual Flush

TOTO is one of the good rated toilet producers and the aquia dual flush toilet is another remark of their toilet series. Its elongated bowl and aquia dual flush provides a deep cleaning environment to your lavatory.

The dual max aquia flushing system consumes very little water for flushing both liquid and solid waste. Its advance technology lets the user use both partial and full flush according to the need. The partial flush uses only 0.9 gallons of water saving 50% of water than the required 1.6GPF.

It uses only 1.6 gallons of water to handle solid waste which helps to cut your water supply bill. Both flushes are controlled with the advanced cleaning technology that let you use a clean and fresh toilet.

The bowl is made with the vitreous china ceramic which provides a very smooth surface. Its elongated shape adds extra room which is really comfortable to use. The exterior part of the toilet is coated with glazed materials that give it the shiny look.

Your family members will find it relaxing to use as it has a universal height feature. Additionally, if there is any disable person, he/she is going to love using it because of the ADA compliance technology.

The toilet comes with a floor installation method that enables it to bear extra load. This installation method gives durability with stylish look. The outlook of your toilet is going to change after installing the toilet as its Cotton color gives it a premium look.

Pros

  • Low water consuming dual max flush
  • Chrome push flush button
  • User friendly height
  • Large bowl space
  • Vitreous china ceramic

Cons

  • Some issues may occur with the refill mechanism

7. KOHLER K-3987-47 Wellworth

The Wellworth two-piece dual flush toilet makes the best use of water with its advanced water saving Flush technology. Its water tank and bowl combination gives a premium outlook. This one of the top low-flow toilet in the market. 

You are going to find its rounded front bowl very comfortable which I think is the best solution for smaller bathrooms. Its almond coating and color offers a beautiful display and upgrades your toilet to another level.

The Class five flushing technology provides tremendous bulk waste flushing performance. You are going to find the best class in cleanliness. Its canister flush valve provides smooth flushing action with low water usages. This valve channels every type of waste with the help of pressurized water supply feature.

Its large flush valve rapidly releases the water combined with a direct-fed jet that keeps your bowl sparkling clean. It uses only 1.28 gallons ​each flush which provides high efficiency than the old 3.5 gallon toilet without sacrificing the performance.

The trip lever is placed to the left side of the water tank which enables the powerful pressurized flush. This lever has made the design of the toilet more desirable. It will always satisfy you with the powerful and strong flush.

Its durable canister design has 90% less exposed seal elements than a three inches flapper for leak-free performance. The universal red seal is used to prevent water from leaking. Here the seal exposes only a small area of the tank water.

The Drylock installation system is effective at making the toilet up and going in no time after installation. It also ensures zero water leakage. This doesn’t require you to bolt it, rather a socket wrench will secure its grip with the tank bowl.

Pros

  • Easy to install
  • Class five flushing technology
  • Durable canister design
  • Vitreous china ceramics
  • Certifies by Watersense

Cons

  • Tall guys might find the height an issue

8. Saniflo 023 Sanicompact Self-Contained Toilet

Saniflo is the sanitary solution for Americans since 1958. Their 60 years of experience allows them to introduce some of the best products in the market like the 023 Sanicompact toilet. The model has a revolutionary compact size which can fit into the smallest of bathrooms. It is excellent for makeshift or mobile toilets.

This has no water tank. Rather it uses a motor to generate all the suction it needs to pull out the waste from the bowl. Here the motor is multitasking. They suck the water out of the bowl and also pump the waste out from the system. The motor also shreds the waste so that it could be pumped out quickly.

One of its best features is the system makes it completely clog free. You are rarely gonna have a clogged toilet. This will consume some electricity which you can consider a downside.

This has a dual flush system. For lighter waste, you can use the 1-gallon flush, and for bulkier residues, you can use the 1.28 gallon and 1-gallon flush together. The flush switches are very easy to reach.

You will have the mounting hardware provided with the toilet. More so, you can add a sink drain which is also delivered by the manufacturers. All the rubber hoses will measure at 1 inches diameter and come with the toilet.

It has a Vitreous China polypropylene, stainless steel, and CRP construction. The vertical discharge measures 9 feet and the horizontal discharge measures 100 feet, whereas the gravity fall is .25 inches.

In the back, its hose pipe has a non-return valve which prevents the toilet waste returning from the pipes.

Pros

  • Fits in tight spots
  • Modern shaped Self-contained toilet
  • Allows Vertical pumping up to 9 feet
  • Uses 1 gallon of water per flush
  • Electronic pumping mechanism

Cons

  • Quality assurance may fluctuate
  • Needs electrical outlet

9. Toto 1.28-GPF/0.9-GPF Washlet with Integrated Toilet G400

Our team has found the claim utterly correct that this is not your average toilet. This is something else, something better. It lets you enjoy the sanitary future. Especially, if you have problems with the toilet for obesity or other physical difficulties, you will have the most out of this product.

It is of course electrical. This has a lot of features including heated seat, deodorizer, drier, etc. However, the coolest features according to me was the remote control. One push of a button will clean the back and font of the toilet.

This toilet has a nozzle that cleans you after you are done with your business. You can control the pressure of the water. You might want to start soft then gradually increase the power so to have a complete clean. The movement of this nozzle can also be controlled with the remote. This makes the cleaning very comfortable.

The lid has an auto open and close feature. It opens quickly and closes in a manner which will not damage the seat or lid itself. This toilet is ADA compliant. The universal height made this toilet such a universal and certified one. Then, its 2-3/4 inches trap diameter made it CAL Green compliant.

Inside and outside of the toilet surface is treated with materials that make it more clean and efficient. The outside attracts much less dirt. Surface of the inside lets water and other waste easily flow through the pipelines.

All in all, this is a comfortable and futuristic toilet. You can’t get better than this. To enjoy all the amenities of the modern era, mount this toilet in your bathroom.

Pros

  • Fully automatic features
  • Self-cleaning technology
  • Ionized carbon filter
  • 3D Tornado Flush
  • ADA compliance

Cons

  • Quiet an expensive toilet

10. Nature’s Head Self Contained Composting Toilet

The Natures head self-contained compositing toilet is proudly made in USA with the latest design. Its stainless body has made it more durable and long lasting with stylish outer look. The toilet is only 28 pounds which makes it very portable.

You can use the toilet anywhere for its light weight that enables it to carry, especially the places where plumbing and electricity is difficult or not existent. It’s the proper solution for RVs, vacation cabins, workshops, barns, yurts or even trucks.

A urine separating features have made it a dry one even though it’s a self-contain toilet. You might not be enjoying a completely odor free experience as some the lower chamber might have some issues with smell.

There is a separator to discrete the liquids from the solids. In that case, you have to empty the liquids regularly but the solids are left alone. They actually decompose without moisture from the urine at a very rapid rate. You can use the toilet for about 90 times before cleaning the composite chamber.

It has two separate containers, one is for liquid and the other is for solid waste. It requires no water supply or sewage connection that simplifies the installation and reduces the maintenance bill.

The only connection it requires is a 12 or 24 volt power supply for the fan. It’s very sturdy and relatively lightweight. The composting bin is placed directly under the seat. You can use the toilet for about 90 times before cleaning the composite chamber.

Pros

  • Zero water usage
  • Suitable for RVs
  • Eco friendly

Cons

  • Need to unload the liquid tank daily

Things to Consider Before You Buy

You are going to choose a toilet that is going to serve you for many years. So, you have to consider some basic aspects that a well-functioning and efficient toilet should have before you select one. Here, we will point out some of those basic characteristics that you should be considering.

low flow toilet buying guide

Shape

The very first thing to consider is the toilet’s Shape, because this will determine the shape of your toilet seat. There are three options - round, elongated, and compact elongated. The shape difference is the primary thing that separates those three types.

If your bathroom has a tight space then you should go for the round shape toilet. But in case you have a little more space, you can have the elongated shape. They provide extra comfort.

The compact elongated shape also provides this comfort but in a compact shape. Here, the water tank has a much smaller posture.

Types of Installation

Another thing to consider is the installation type. You can have a one piece, two pieces, or a wall hung toilet. There are some other super fancy toilet with state of the art technologies but I will not be discussing them in this article.

Benefit of a one piece toilet is that you don't have to install two pieces together. The two piece toilet offers cheap installation cost with highest comfort. The wall hung toilet requires hard work to install. You have to go behind your wall to create the support for the toilet. Then you can install the actuator flush buttons.

Height

Toilet height is yet another thing to consider when you are buying a toilet. Many toilets have a standard height which is shorter than a chair.

But there are toilets which are at the same height of a regular chair. If you need a nonstandard height, you can always go for the wall hung toilet.

You will be able to customize the height of the toilet with a wall hung installation. Even, you can choose different style of your toilet with that.

You have some different options for the trap way of the toilet. But, what is a trap way? It’s the swirly mechanism that can be seen on the side of a toilet. It’s not always visible, especially if you are in a bathroom where you would never see the side of your toilet.

However, if you do have a larger bathroom, you might want to consider a skirted option. Skirted or concealed toilets both add an extra piece around that trap way which makes it lot easier to clean that part. Skirted trap way is usually a super flat surface.

Flush Type

You can have a single or dual flush. Dual flush toilets usually have two ways to flush. In a residential toilet, you are going see options like a two buttons circle or a two buttons rectangular actuator.

Some toilets have the normal trip lever where a little trip lever is hidden behind the standard one. You pull this down for your eco flush.

Color

There’s also a consideration of color. Manufactures offer different colors of toilets according to the color of your wall. It can be really nice to have a beautifully colored toilet, especially if your space is painted.

Your toilet is actually going to stand like a sore thumb. So, choose the color of your toilet wisely when you want more of a cohesive look in your bathroom.

Benefits and Some Common Problems of Using Low-Flow Toilet

We all should use environment friendly bathrooms. And for that, the best solution is low flow bathrooms which are highly water efficient. US federal law allows only 1.6 gallons per flush whereas the low flow toilets use 1.3 gallons of water per flush or less.

The dual flush model is most efficient in this case as they offer less than 0.8 gallons for partial and 1.3 or less for full flush. Below, you are going to know about some benefits and common problems.

Common Benefits

The primary benefit of a low-flow toilet is the efficiency if using water. They use significantly less water than other traditional toilets. Over a long period of time, these toilets ensure the saving of thousands of gallons of water by limiting the water use per flush.

Cost saving is the secondary benefit of a low-flow toilet. With a low-flow toilet, you can save 20%-60% of your water bill that arises from the flushing of your toilet. This can save you a lump sum amount of money every year.

Another benefit of low-flow toilet is its less space requirement. Low-flow toilets’ water tanks are comparatively smaller than traditional toilets and so you can install a low-flow toilet in a small bathroom.

Common Problems

The major drawback of a low-flow toilet is clogging. Sometimes, solid waste, tissues, and toys can create a blockage in the toilet. Flushing the system can lead to an overflow of water from the bowl.

When dealing with large amount of waste, these types of toilets require double flushing which means you are going to use water like a traditional toilet.

How to Unclog

In this section, you are going to complete a walkthrough on how to unclog a toilet. First, you have to stop the water from overflowing the bowl while the toilet is clogged.

Remove the led from the toilet tank and push the flapper down into the closed position. The flapper is what holds the water in the tank until it’s ready to be flushed. If you are unable to stop the bowl from overflowing, you can shut off the water supply to the toilet.

Understanding the cause of the clog will give you the option to choose the best method. The most common cause of a clogged toilet is toilet paper and waste. It’s best to use a plunger or toilet auger for these types of clogs.

The toilet auger has a hook on its edge which can easily Unclog the blockage caused by toothbrushes, pens and toys.

Cell phones and smaller bottles can be extremely difficult to retrieve and may actually require reaching into the toilet. You may have to remove and discharge the sides to unclog. Round objects are very difficult to retrieve.

It’s a very common saying that choosing the right toilet tools is half the job. Common sink or cup plunger will give you the lowest success rate. Using a flange plunger will give better results as it has a stronger seal against the toilet opening.

A toilet auger is the best option as it makes direct contact with the blockage.

Now, you need to place the plunger into the bowl maintaining an angle. This will fill the plunger with water and purge the air. Firmly place the plunger against the bottom of the toilet opening while creating a strong seal.

Push the plunger straight down followed by lifting it straight up. Don’t allow the plunger to lift away from the bottom opening.

Now, you have to give some force to the down and up strokes. After multiple times, the blockage should be dislodged. Congratulations, you have done it.

Frequently Asked Questions

Q: What type of toilet is the best in efficient water usage?

A: Pressure assist flush toilet is the best in terms of efficient use. There is a sealed cylindrical tank that displaces air inside the tank and creates pressure which helps to create a superior force to flush with less water. You can go for a pressure-assisted toilet if you are in a new building or home.

Q: What are the common reason for clogging?

A: Most of the time, it is solid waste with tissue papers that causes blockage and hinders in cleaning mechanism. Additionally toys, balls, cell phones, toothbrush and cap of the tooth paste can cause clogging.

Q: Push button or toilet tank lever – which one is most effective and easy to use?

A: Both of them offer an easy to use feature. But when it comes to modernization, you should go for push button. Also, you will have a choice of full or partial flush on button. On the flip side of the coin, the lever will give you a traditional flush experience.

Q: Dual flush or single flush – which one is better?

A: Both of them are good at cleaning as their performance are quiet the same. But in case of the good low-flow toilet, dual flush will give you the partial flush option to handle liquid waste with a full flush option for solid waste.

Q: Why should I have a low-flow toilet?

A: Low flow toilets have the ​strong flush technology with minimum water consumption and it will also help to reduce your water bill. Most of all, it will give your bathroom a modern and premium look.

Final Words

Well, now you know almost everything about this specific kind of toilet. Hopefully, you will have no issues while choosing the right low-flow toilet with these findings.

Joe Carrow
 

Product reviewer & passionate blogger. Beside writing for this blog, I spend my time crafting research based contents for HuffingtonPost, Lifehacker & Forbes!

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