Best Low-Flow Toilets 2019 – Best Water Saving Toilets
Among the many water consuming products that we have in our homes, our toilets use up the most amount of water. Older toilets use up to 6 gallons of water with each flush. This is not only a water wastage worth concern, but also an alarming money wastage.
How much water does a high efficiency toilet use? Modern water saving toilets ought to consume an average of 1.6 gallon in each flush, as per the Federal Standards. The Environmental Protection Agency facilitates strict WaterSense programs which encourages water efficiency. Such toilets only use 1.28 gallons of water per flush.
The new 1.28 gallon per flush toilets demonstrates a great functionality on the solid waste. This performance is powered by big size valves in the WaterSense certified models. The valves work along with traps which let larger amounts of water to flow at a go. As a result, the valves release an extra push which clears the bowl off the waste.
We have come together competently as a team to bring you the best low-flow water saving toilets. All having been compiled from reliable and professional sources. They may be worth considering after reading through our guide and unbiased toilet reviews.
Top 7 Best Low-Flow Toilet Reviews
1. Toto CST454CUFG#01 Drake II 1G Close Coupled Toilet with SanaGloss
The Toto Drake has a low-flow version called the Toto Drake II 1G. This toilet uses only 1 gallon of water with every flush. To compensate for the lower amount of water, this toilet uses a Double Cyclone flush. This causes the toilet water to swirl around more to clean the interior and maintain a less noisy flush.
Following the lead of American Standard, Toto uses a special finish in the Drake II 1G to help maintain the cleanliness of the toilet. The name that Toto uses to market this finish is “SanaGloss.” They claim that this special finish ensures a clean bowl with every flush.
The Toto Drake II 1G stands about 17” or 18”. The height difference depends on the type of seat selected. It features a comfortable, elongated rim. The seat has a soft closing mechanism that prevents the seat from slamming down on the toilet rim.
2. Kohler K-3658-0 Toilet
The sleek, simplistic design and outstanding performance of this toilet make an awesome combination of usefulness and style. With a setting that uses 1.28 gallons per flush, this toilet saves almost 16,500 gallons of water each year in comparison to older toilet models that use 3.5 gallons. This toilet conserves water yet does not sacrifice flushing power. This comfortable toilet features a seat that is elongated and a height that is at a comfortable chair level.
This is a WaterSense toilet that meets or the guidelines set forth by the EPA for flushing. These guidelines prompt the toilet to consume 20% less water compared to the 1.6-gallon toilets, thus saving lots of water.
This water saving toilet meets the standards outlined by CALGreen, Colorado SB 14-103, and the CEC (California Energy Commission).
Through the use of gravity and a specially made tank, trapway, and bowl, this 1.28 gpf toilet uses just a single flush to create a forceful siphon.
You will notice optimum performance with no plugging and a powerful rinsing for a clean, sanitary bowl.
3. TOTO MS854114ELG#01 Eco Ultramax ADA Elongated One Piece Toilet
The Toto Eco Ultramax (MS854114ELG#01) is another excellent toilet in the Toto line of products. This toilet has a nice appearance and also saves water consumption. Using only 1.28 gallons per flush, this low-flush toilet has a sleek, modern appearance and a plethora of features that make it convenient for everyday use.
Composed for vitreous china, this toilet measures 28.2” x 16.5” x 29.2”.
This WaterSense toilet comes with a SanaGloss finish which acts as the perfect glaze, creating a fine smoothness for the siphon jet flush to clean its bowl with high efficiency.
If you are comfortable with the high bucks and are opting for highly rated product, this should be an option worth looking into.
4. Niagara 77001WHCO1 Stealth 0.8 GPF Toilet
The Niagara 77001WHCO1 Stealth is among the low budget toilets. It is a water-efficient toilet with a powerful system of flushing. Since it features a forceful system for flushing, this toilet is an excellent value for money. The tank is high profile. The bowl is elongated and crafted from vitreous china. The toilet comes in white.
The push button on top of the tank activates the flushing mechanism. Because this toilet features a pressure assist flush system, it uses less water with each flush – just 0.8 gallons. The forceful flush with a small amount of water is possible because the water in the tank is under pressure. When the flush is initiated, the valve opens. With the combined effort of pressure and gravity, a forceful flush takes place.
Please note that this low-flush toilet does not include a seat.
5. American Standard 2887.216.020 H2Option Siphonic Dual Flush Elongated Two-Piece Toilet
Boasting a WaterSense label, the American Standard H2Option is a popularly recognized toilet in the market. It is in the category of dual flush toilets.
The dual flush system lets you flush using two different buttons for different types of waste. By having two buttons on the tank’s top, the toilet provides flushes with two different amounts of water. The first button releases the larger amount of water – 1.6 gallons and is for removing waste that is solid. The second button releases only 0.9 gallons and is meant to be used for liquid waste.
Homeowners like the dual flush toilets because they can have the best of both worlds. They have the convenience of a complete flush while also having an option that is friendly to water conservation.
6. Kohler K-3817-0 Memoirs Stately (1.28 GPF Toilet)
The Kohler K-3817-0 Memoirs Stately has a formal, sophisticated appearance. Its base features detailing that resembles crown molding in your home.
The Kohler K-3817-0 features a flush that uses only 1.28 gallons of water. This conserving flush can save you up to 16,500 gallons of water each year when compared to the toilets that use 3.5 gallons per flush.
This low-flow toilet includes an elongated bowl and fewer exposed seal material which mean less maintenance due to leaks. The water comes into the bowl at all angles so you will have improved flushing and less waste left after the flush.
7. KOHLER K-11451-0 Cimarron The Complete Solution Two-Piece Toilet
This Kohler toilet has earned the WaterSense label for its efficient use of water. Not only does it play a role in water conservation but it also has a unique style. Since it uses only 1.28 gallons of water with each flush, it saves the homeowner up to 16,500 gallons annually when comparing it to the standard toilet that uses 3.5 gallons per flush. The Kohler Cimarron toilet gives all these savings and never sacrifices performance.
With its AquaPiston technology, this toilet gives a quick, forceful, and easy flush. This technology lets the flushed water to flow all-round the bowl and increases the efficiency and power of every flush.
The innovative flush valve uses a 3:2 ratio to harness gravity and increase toilet’s performance with each flush.
What is Considered a Low-Flow Toilet?
A low-flow/low-flush/high-efficiency toilet is flush toilet which uses very little water as compared to a full-flush toilet. Practically, a normal low-flush toilet uses at least 1.6 US gallons as compared to the WaterSense certified toilets, which use at most 1.3 gallons in a flush.
They were first used in the US around 1990s when addressing water conservation concerns. Low-flush toilets are twain, that is the single and dual flush toilets. They use 1.6 US gallons per flush in a full flush and 1.28 US gallons per flush at least.
The WaterSense certification program certifies the toilets which attain the threshold of 1.6 USgpf. The models that satisfy this threshold are eligible to hold the WaterSense sticker on them. With this implementation, the EPA is convinced that averagely, the United States home would save a total of $90 each year and a sum of $2000 for a toilet lifetime.
Do Low-Flow Toilets Really Work?
From the time that Joseph Adamson in the Mid-19th century invented the siphon-flush toilet, these devices have operated in about the same way. They simply use a forceful rush of up to seven gallons of water. Around the mid-1990s, laws concerning water conservation brought about the introduction of a low-flow toilet.
When laws were enacted requiring the use of just 1.6 gallons of water with each flush, flushing down waste became an uncertainty. With the newly enacted laws, toilet companies altered their design to be sure that their products used just the right amount of water. However, they did not alter the design enough to be sure that waste was properly carried away with roughly half the amount of water used in previous toilet models.
Adamson’s toilet worked by a flushing process that was assisted by gravity – water moves from the toilet’s tank down and into the toilet bowl where it removes waste. From the 1930s toilet tanks were mounted very high in the back of the toilet in order to get the most use from the gravitational pull on the water. Gravity helps to move a large quantity of water, but it does not do much to move just the required 1.6 gallons.
Americans noted the inefficiency of their water saving toilets. Soon, low-flow toilet was an unpopular item. Evidently, nobody wanted to be associated with the low-flow toilets. People therefore went back to the olden types of toilets that were used before 1994. Some bought the older ones from garage sales.
Consumers pettily complained. This made the manufacturers to change the toilet design. All these, was aiming at achieving more efficiency to the newly born low-flow toilets.
Today’s toilets require design modification that assists the gravity in moving waste through the system.
Newer toilets have flapper valves and trapways that are wider. The flapper valve is located in the tank. It is the hole at the bottom of the tank where the water goes into the toilet bowl. The trapway is the visible hole in the toilet bowl’s bottom. In a later toilet design, the trapway is glazed or finished smoothly to reduce friction and provide an easy passage for waste.
The Japan based company, Toto, first sold toilets in the United States in 1989. Now, this company’s sales share is about one-third of the US toilet market. The toilets made by Toto feature a straighter, longer trapway than a traditional toilet. They also expanded the flush valve to 3 inches (traditional toilets have 2 inches). A toilet flush valve – this is where water exits the tank – so this slight change is noticeable.
Because gravity has less effect with just a little water, toilet manufacturers added pressure. The pressure assist toilets utilize pressurized air from the tank to forcefully push water into the toilet bowl. This compensates for the lesser amount of water. While this toilet flush system disposes of waste very well, it is a bit noisier than typical flush toilets. Additionally, the pressure assist toilets may require a power source and can be more difficult to maintain. An example of this type of toilet is the Fontaine made by American Standard.
The Purist Hatbox by Kohler revs up the flush by adding 0.2 horsepower to its pump. Of course, since it has a pump, it will need a source for electrical power.
The continent of Australia, one of the driest places on Earth, brought a dual flush toilet. With these water saving toilets, you can select a button for flushing waste that is liquid and using 0.8 gallons of water or another button when you want to flush solid waste and use 1.6 gallons of water. This dual flush system was invented by Caroma in an effort to support water conservation. Besides conserving water, they also ensured high efficiency. The Caroma features a trapway that is 4 inches. This ensures that when you flush, the waste is removed. Despite being a gravity based flushing system, it uses not the siphon system used in most traditional toilets in which the water leaves the bowl before the waste. The system that Caroma uses is a wash-down. The bowl holds a small amount of water. The largest water volume cascades down out of the tank via the bowl’s rim.
So, when low-flush toilets are working properly, they are really good news!