Best Low Flow Toilets: 10 Most Water Efficient Toilets
Did you know that American families on an average use around 400 gallons of water every day? Out of this 70 percent is consumed indoors and around 27% of the indoor water is used in the toilet. If you do your math right, the amount of water you consume each year can be staggering. Not only does it escalate your water bills quickly, but it also puts a burden on the natural resources. One way of being considerate to Mother Nature and limiting your daily water consumption is getting the best water saving toilet. While the older toilets use around 3.5 to 7 gallons of water per flush, the best low flow toilets use 1.28-1.6 Gallons Per Flush (GPF). The best low flow toilet with an EPA WaterSense certification can help you cut down your toilet water usage by a whopping 60 percent.
If these figures seem enticing enough, you may wonder which is the best water saving toilet in the market today. All the leading manufacturers have some great offerings for the best water efficient toilets but to help you cut the chase short, we have shortlisted the best of the best low flow toilets ranging from budget toilets to high-end variants.
Quick Navigation
- Top 10 Low Flow Toilets
- Niagara 77001WHC01 Stealth 0.8GPF Ultra-High-Efficiency Toilet
- KOHLER K-3987-47 Wellworth Two-Piece Round Bowl Toilet
- TOTO CST412MF.01 Aquia Dual Flush Elongated Two-Piece Toilet
- TOTO MS992CUMFG#01 Neorest 1.0 GPF and 0.8 GPF Dual Flush Toilet
- American Standard 2887218.020 H2Option Siphonic Dual Flush Toilet
- Toto Drake II 1G Close Coupled Toilet
- Saniflo 023 Sanicompact Self-Contained Toilet
- KOHLER K-3609-0 Cimarron Comfort Height Elongated 1.28 GPF Toilet
- WOODBRIDGE T-0019 Dual Flush Elongated One Piece Toilet
- KOHLER K-3817-0 Memoirs Stately Comfort Height Two-Piece Elongated 1.28 GPF Toilet
- Buyer’s Guide to Get the Best Low Flow Toilet
- Advantages of Low Flow Toilets
- Disadvantages of Low Flush Toilets
- Frequently Asked Questions
- Conclusion
We have also tried to list down the top features that you must scout for when narrowing down your choices. And to help you make a wise decision, we have given out the pros and cons of owning a low flow toilet. We will also try to answer some of the frequently asked questions about the best low flow toilets. So, let us begin with our top choices for the most water efficient toilets available in the market today.
Our Top Picks
| Product | Rating | Price | Buy Now |
|---|---|---|---|
Niagara 77001WHC01 Stealth 0.8GPF Ultra-High-Efficiency Toilet |
3.4 |
$164 | Buy Now |
KOHLER K-3987-47 Wellworth Two-Piece Round Bowl Toilet |
4 |
$333 | Buy Now |
TOTO CST412MF.01 Aquia Dual Flush Elongated Two-Piece Toilet |
3.4 |
N/A | Buy Now |
TOTO MS992CUMFG#01 Neorest 1.0 GPF and 0.8 GPF Dual Flush Toilet |
4.5 |
$4699.99 | Buy Now |
American Standard 2887218.020 H2Option Siphonic Dual Flush Toilet |
4.3 |
$250 | Buy Now |
Toto Drake II 1G Close Coupled Toilet |
4.7 |
$437 | Buy Now |
Saniflo 023 Sanicompact Self-Contained Toilet |
4.4 |
$913.75 | Buy Now |
KOHLER K-3609-0 Cimarron Comfort Height Elongated 1.28 GPF Toilet |
4.4 |
$529.87-$1017.76 | Buy Now |
WOODBRIDGE T-0019 Dual Flush Elongated One Piece Toilet |
4.5 |
$318 | Buy Now |
KOHLER K-3817-0 Memoirs Stately Comfort Height Two-Piece Elongated 1.28 GPF Toilet |
4 |
$626.28 – $1152.44 | Buy Now |
1. Niagara 77001WHC01 Stealth 0.8GPF Ultra-High-Efficiency Toilet
The first model that we want to feature in the best low flow toilets is Niagara’s Stealth Ultra High-Efficiency toilet. This budget model features a dual flush siphon jet technology to clear out waste using minimal water. The reason why we want to label this toilet as the best water saving toilet is that it uses just 0.5 GPF for a half flush and 0.8 GPF for a full flush which is way low than the industry standard. This best water saving toilet comprises a stealth seal instead of a regular flapper which releases a gush of water into the bowl from all sides. The precision-engineered bowl comprises rim holes that ensure 360° cleaning of the bowl. This toilet has an ADA compliant seat height and its water efficiency of saving 77% more water than the traditional toilets has rightfully earned it the EPA’s WaterSense certification.
|
$164 |
3.4 |
Buy Now |
Features
- Dimensions – 28.88 x 18.75 x 31 inches
- Water Consumption – 0.5/0.8 GPF
- Material – Vitreous china
- Rough-in – 12-inches
- Color – White
- Bowl – Elongated
- Flush Type – Pressure-assisted quiet flush
- Mounting – Floor-mounted
- WaterSense certified
- ADA compliant
Pros
|
Cons
|
2. KOHLER K-3987-47 Wellworth Two-Piece Round Bowl Toilet
The next model joining the league of best water saving toilets is KOHLER’s Wellworth. This model comes with a round-shaped bowl that makes it ideal for compact bathrooms. This model features KOHLER’s Class Five® Flushing technology that creates a strong siphon force during every flush and rinses the bowl effectively. Talking about the water-saving capability, this is one of the best WaterSense toilets that come with a dual flush and uses 1.1 GPF for a half flush and 1.6 GPF for a full flush so you can save up to 30% more water than a 1.6 GPF toilet. Another feature that makes it the best water saving toilet is the canister flush valve that ensures effective flushing with low water consumption. It also has an innovative dual-flush lever located on the side instead of dual flush buttons on the top.
|
$333 |
4 |
Buy Now |
Features
- Water Consumption – 1.1/1.6 GPF
- Material – Vitreous china
- Rough-in – 12-inches
- Color – Almond/Biscuit/Black/White
- Bowl – Round
- Flush Type – Gravity-fed Class Five® Flushing System
- Mounting – Floor mounted
- WaterSense certified
- Warranty – 1-Year limited warranty
Pros
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Cons
|
3. TOTO CST412MF.01 Aquia Dual Flush Elongated Two-Piece Toilet
TOTO really seems to be dominating the market when it comes to the best water saving toilets that are also pocket-friendly. This two-piece high-efficiency best WaterSense toilet integrates TOTO’s Dual-Max flush technology that uses 0.9 GPF to flush out liquid waste and 1.6 GPF to clear solid waste. So you not only have the best low flow toilet fitted in your bathroom but you also save up money by reducing your water bills. It features a simplistic design with a skirted trapway that gives it a premium look and at the same time makes cleaning effortless. This toilet has a universal height seating and unlike most water efficient toilets that come with a standard 12-inch rough-in, this model offers options between a 12-inch and 10-inch rough-in.
|
– |
3.4 |
Buy Now |
Features
- Dimensions – 27.5 x 14.25 x 31.25 inches
- Water Consumption – 0.9/1.6 GPF
- Material – Vitreous china
- Rough-in – 10/12-inches
- Color – Cotton
- Bowl – Elongated
- Flush Type – Dual-Max flush
- Mounting – Floor mounted
- WaterSense certified
- Universal height seat
- Warranty – 1-Year limited warranty
Pros
|
Cons
|
4. TOTO MS992CUMFG#01 Neorest 1.0 GPF and 0.8 GPF Dual Flush Toilet
Our next model in the best water efficient toilets is again a TOTO make. This toilet is one of the best low flush toilets that have all high-end features one may desire in a premium toilet. The TOTO Neorest comes with a bidet seat that integrates features such as an automatic opening/closing lid, heated seat, air deodorizer, and multiple cleanse options. This best low flow toilet gives you the liberty to select from front or rear, soft rear, oscillating, and pulsating cleaning options and can even adjust the warmth and force of the water spray as per your liking and comfort.
The automatic gentle nightlight makes it easier to find your way to the toilet in the middle of the night. This toilet has an auto flush powered by TOTO’s EWATER+ technology that uses electrolyzed water to keep the bowl sanitized. Also, its CeFiONtect coating prevents dirt and bacteria from sticking to the surface. This model is powered by the Tornado Dual Flush System that uses double cyclone flushing to clean the bowl using just 0.8/1.0 GPF per half and full flush, making it one of the best water saving toilets in the market.
|
$4699.99 |
4.5 |
Buy Now |
Features
- Dimensions – 32.5 x 15.5 x 21.5 inches
- Water Consumption – 0.8/1.0 GPF
- Material – Ceramic
- Rough-in – 12-inches
- Color – Cotton white
- Bowl – Elongated
- Flush Type – Tornado Flush™ Double Cyclone flushing
- Mounting – Floor mounted
- EWATER+ technology
- CeFiONtect glaze coating
- WaterSense certification
- ADA compliant
- Bidet remote with personalized setting options
- Warranty – 3-Year limited (residential) and 1-Year limited (commercial) warranty
Pros
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Cons
|
5. American Standard 2887218.020 H2Option Siphonic Dual Flush Toilet
Our list of best water efficient toilets would be incomplete without an American Standard model. The H2Option dual flush toilet is the best low flow toilet from the maker that features the Siphon Jet Bowl technology and PowerWash rim to use just 0.92 and 1.28 GPF for half and full flush respectively. This Ultra High-Efficiency Toilet also comes with an EverClean® glazed surface that does not let dirt and other grime stick to the surface. So if you are not a big fan of cleaning the toilet regularly, this model can be a great addition to your bathroom. This best low flow toilet also offers an option to select from a round or elongated bowl as well as normal or right height seating. This best WaterSense toilet is also available in three colors to match your bathroom theme.
|
$250 |
4.3 |
Buy Now |
Features
- Dimensions – 15 x 27.75 x 30 inches
- Water Consumption – 0.92/1.28 GPF
- Material – Vitreous china
- Rough-in – 12-inches
- Color – Bone/Linen/White
- Bowl – Elongated/Round
- Normal and Right Height seating option
- Flush Type – Dual Flush
- EverClean® anti-microbial surface
- Mounting – Floor mounted
- WaterSense certified
- CALGreen and California Energy Commission (CEC) compliant
- Warranty – Limited lifetime warranty on chinaware and a limited 5-Year warranty on mechanical parts
Pros
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Cons
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6. Toto Drake II 1G Close Coupled Toilet
One of the highly rated and most water efficient toilets in the market, the TOTO Drake II 1G model is the best low flow toilet that uses just 1 GPF coupled with the Tornado Flush™ system to clear large loads in a single flush. The flushing mechanism uses dual nozzles to create a strong centrifugal force that rinses the bowl more efficiently using lesser water. Just like the other best low flush toilets by TOTO, this model also comes with the CeFiONtect glaze coating that does not allow germs to adhere to the ceramic surface which consequently reduces the need to clean the toilet frequently. The Drake II 1G model offers universal height seating that is ADA compliant and has also earned EPA’s WaterSense certification for its water-efficiency.
|
$437 |
4.7 |
Buy Now |
Features
- Dimensions – 28.5 x 15 x 30 inches
- Water Consumption – 1 GPF
- Material – Ceramic
- Rough-in – 12-inches
- Color – Bone/Cotton/Cotton White
- Bowl – Elongated
- Flush Type – Gravity-fed flush
- Mounting – Floor mounted
- WaterSense certified
- ADA compliant universal height seat
- Warranty – 1-Year limited warranty
Pros
|
Cons
|
7. Saniflo 023 Sanicompact Self-Contained Toilet
If the lack of a sewage connection did not allow you to have a bathroom at the preferred place in your home, you can check out this one-piece macerating upflush toilet by Saniflo. This toilet can be installed up to 9 ft. below the sewer line and up to 120 ft. away from a soil stack. The Sanicompact is one of the most efficient self-contained toilets in the best low flush toilets category.
This toilet uses just 1 GPF along with an electronically timed flushing system and can remove effluent from a toilet and sink in a residential setup. Its macerator also has a non-return valve that prevents backflows and chances of clogs. This tankless best low flow toilet can fit in the tightest dimensions and will give your bathroom a stylish upgrade. This is perhaps the smallest of the most water efficient toilets out there. This toilet also has a tall seating height that makes it comfortable to use by elders or people with disabilities.
|
$913.75 |
4.4 |
Buy Now |
Features
- Dimensions – 18.25 x 14.25 x 19.5 inches
- Water Consumption – 1 GPF
- Material – Vitreous china
- Color – White
- Bowl – Elongated
- Flush Type – Automatic flush
- Voltage – 110-115 V
- Wattage – 960 W
- Mounting – Floor mounted
- Seat height – 18.5 inches
- Warranty – 2-Year limited warranty
Pros
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Cons
|
8. KOHLER K-3609-0 Cimarron Comfort Height Elongated 1.28 GPF Toilet
The second KOHLER model that we want to feature as the best low flow toilet is the Cimarron Comfort Height. Integrating the AquaPiston flush engine and Class Five® Flushing technology, this toilet uses just 1.28 GPF to clear out waste. This is one of KOHLER’s best low flush toilets that ensure powerful and efficient flushing using minimal water. This toilet also boasts of a simple and sleek design that is sure to complement your bathroom and its elongated bowl provides maximum comfort. This best WaterSense toilet with EPA certification can help you save up to 16,500 gallons of water every year. It also features a Comfort Height seat making it ADA compliant. Another feature that gives it an edge over the other most water efficient toilets is its insulated tank that prevents condensation in warmer surroundings.
|
$529.87-$1017.76 |
4.4 |
Buy Now |
Features
- Dimensions – 28.75 x 17.62 x 30.75 inches
- Water Consumption – 1.28 GPF
- Material – Vitreous china
- Rough-in – Option of 10”, 12”, and 14”
- Color – Biscuit/Honed White/Sandbar/White
- Bowl – Elongated
- Flush Type – Gravity flush
- Mounting – Floor mounted
- WaterSense certified
- ADA compliant Comfort Height seat
- Warranty – 1-Year limited warranty
Pros
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Cons
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9. WOODBRIDGE T-0019 Dual Flush Elongated One Piece Toilet
Next in line for the best low flow toilets is WOODBRIDGE’s T-0019 dual flush toilet which, according to popular low flow toilet reviews, is one the classiest models you can find amongst the most water efficient toilets. It features a compact skirted design that that not only looks high-end but also prevents dirt and dust from accumulating in the crevices. This best low flow toilet comes with a fully glazed Siphonic flushing system to prevent clogging and uses 1.0 and 1.6 GPF for liquid and solid waste respectively. This one-piece toilet is also one of the best WaterSense toilets that can help you save gallons of water every year. The T-0019 comes with a soft-closing lid with durable stainless steel hinges that are easy to unlatch. The Comfort Height seating adds to the ease of sitting on and standing up from the seat. This model is also easy to install on your own as the package includes everything. All in all, this model is surely worth considering in the best water efficient toilets.
|
$318 |
4.5 |
Buy Now |
Features
- Dimensions – 31 x 18 x 28 inches
- Water Consumption – 1.0/1.6 GPF
- Material – Porcelain
- Rough-in – 12-inches
- Color – Cotton white
- Bowl – Elongated
- Flush Type – Dual Siphonic Flushing
- Mounting – Floor mounted
- WaterSense certified
- ADA compliant Comfort Height seat
- Warranty – 1-Year limited warranty
Pros
|
Cons
|
10. KOHLER K-3817-0 Memoirs Stately Comfort Height Two-Piece Elongated 1.28 GPF Toilet
The last model in our list of best low flush toilets is the KOHLER’s Memoirs Stately two piece toilet. As the name suggests the stand-out feature of this best low flow toilet is its stately architectural design that resembles crown molding. If you want to add a vintage feel to your bathroom but do not want to compromise on the efficiency, this is one of the best water efficient toilets that you can have. Similar to the previous KOHLER models, this one too features the patented AquaPiston flush technology that uses the canister flush valve to send out water from all directions and push out waste with a powerful force despite using lesser water than the standard toilets. This toilet has an elongated bowl and exposes 90% lesser seal material to prevent leaks. Other than that, this model also features Comfort Height seating which makes sitting down and standing up from tis toilet effortless.
|
$626.28 – $1152.44 |
4.5 |
Buy Now |
Features
- Water Consumption – 1.28 GPF
- Material – Vitreous china
- Rough-in – 12-inches
- Color – Almond/Biscuit/Black/Ice Gray/Sandbar/White
- Bowl – Elongated
- Flush Type – Gravity-fed
- Mounting – Floor mounted
- WaterSense certified
- ADA compliant
- Warranty – 1-Year limited warranty
Pros
|
Cons
|
Buyer’s Guide to Get the Best Low Flow Toilet
Now that you have the list of the best low flow toilets that should be on your radar, let us look at key characteristics that you must consider while going for the best water saving toilet.
Bowl Shape
Best water efficient toilets come in three shape variants – round, elongated, and hybrid (compact). While the elongated ones are the most comfortable to use, they are usually two inches longer than the round ones. If you are tight on bathroom space, go for a round or hybrid shape. The hybrid ones occupy less space and give almost the same comfort as that of the elongated bowl.
Installation Type
This is another important factor to consider when buying the best low flow toilet. The one piece toilets are easier to install as you just need to install one unit. The two-piece toilets require installing the bowl and the tank and connecting them properly to avoid any leakages. It is the wall-mounted models that require professional help since they require a lot of behind-the-wall work and the cost of installation is also high.
Height
If you have elders of people with disabilities in your family, selecting the best low flush toilets with the right height is crucial. The standard toilets usually have a seating lower than a chair. You must look for the best water efficient toilets that are ADA compliant and offer Comfort Height seating. If you opt for a wall-mounted toilet, you can customize the toilet height as per your needs.
Trapway
If the dimensions of your bathroom allow, go for the models that have a skirted trapway. Not only does it give a clean and modern look to the toilet, but a skirted trapway is also easy to clean.
Flush Type
The best low flush toilets come with the option of a dual flush. The toilet can have dedicated buttons for a full flush and eco flush. In the case of a trip lever, a smaller trip lever may be present behind the standard lever or the lever may have to pull up and push down mechanism for half and full flush.
Color
Since the toilet is a prominent fixture in the bathroom, choose the color wisely. If you do not want to go with the standard white model, manufacturers today offer the best WaterSense toilets in multiple colors to match your bathroom décor.
Efficiency and Performance
Check the low flow toilet reviews to gauge the efficiency of your shortlisted models. Many times even the best WaterSense toilets fail to deliver on their promises and require multiple flushing which dissolves the whole purpose of purchasing the best low flow toilet. Also, check the performance in terms of MaP ratings to avoid the hassle of clogging.
Pricing
A higher price may not necessarily mean that it is the best water saving toilet. Sometimes the cheaper models outperform the high-end models. So don’t just go by the price, but look at the whole package.
Other Factors
Some of the other factors to consider for the best low flush toilets include the flushing mechanism and wash down power, reliability of the brand, and the warranty cover offered on the bowl as well as the flushing mechanism.
Advantages of Most Water Efficient Toilets
- The biggest advantage of owning the best water saving toilet is that it can help you save gallons of water every year. The best low flow toilet uses almost half the quantity of water than that used by the traditional toilets.
- Saving water will invariably help you cut down your water bills by 20 to 60 percent. So a low-flow toilet is not only economical for the environment but also for your pocket.
- Since the best water efficient toilets require less water per flush they also feature a considerably smaller tank. So if your bathroom has tight dimensions, you can also save up some space.
- As per low flow toilet reviews these toilets are also quite durable, therefore, require lesser maintenance. So even if the toilet costs you more initially, you do not need to worry about spending on repairs too often.
Disadvantages of Low Flush Toilets
- One major drawback that we found in several low flow toilet reviews is the issue of clogging.
- Since they use lesser water, some users complain that they need to flush twice to clear out the entire waste. So you end up using the same amount of water as with traditional toilets.
- Few of the most water efficient toilets can be heavy on pocket. Plus their installation cost can also be higher than the traditional ones.
Frequently Asked Questions
1. How does a low-flow toilet work?
The best water saving toilets can work either on gravity or use a pressure-assisted flushing system for waste removal. The gravity-fed toilets use the natural gravitational pull to release water into the bowl and remove the waste through the trapway. On the other hand, the pressure-assisted mechanism has a secondary thank within the main tank that created additional air pressure to bolster the flushing power of the toilet. Due to the added force, the pressure-assisted models require lesser water than the gravity-fed ones.
2. How much water is consumed by the best low flow toilet?
As per federal law, toilets should not consume more than 2 gallons of water per flush. However, the best water efficient toilets today use even lesser 1.0 to 1.6 gallons per flush.
3. How much does installing a low-flow toilet cost?
The best low flow toilets available today are fairly easy to install on your own as the manufacturers provide detailed step-by-step instructions in the package. Nonetheless, if you still require professional help you may contact your local plumber to get an estimate.
4. How durable is a low-flow toilet?
Constant use can wear out some parts of the flushing mechanism. While it is easier to find spare parts for gravity-fed toilets, the parts of pressure-assisted flushes can cost more, plus, their replacement requires professional help. However, they have a more sturdy construction so they require less frequent overhauling.
5. How to maintain a low-flow toilet?
The upkeep of most water efficient toilets requires minimal effort. Their pressure-assisted flush and siphon suction technology releases water into the bowl with a strong force that cleanses the bowl thoroughly with every flush. So you need not worry about scrubbing the bowl too often to maintain hygiene.
6. Why does my toilet clog so often?
Disposing of sanitary waste, tissue papers, dental floss, condoms, etc. can increase the risk of clogs in any toilet. To avoid such messy encounters, avoid disposing of unwanted materials into the toilet. Also, if you have kids at home, make sure to keep the toilet lid closed when not in use to prevent them from throwing toys or balls in the commode.
7. Which is better dual flush or single flush toilet?
Both single and dual flush toilets are equally effective in dealing with waste. However, if you are more water conscious you can go for the dual flush that uses less than 1 gallons of water to flush out liquid waste.
Conclusion
With that, we conclude our list of the best water efficient toilets present in the market today. We understand that selecting the best low flow toilet is not an easy decision since one does not replace a toilet frequently. However, rest assured that whichever model you choose from this list will prove its worth as the best water saving toilet. If you are still apprehensive, you can always scan the market and compare the best low flush toilets with the help of our buying guide. So, choose wisely.