Low-flow toilets are water-efficient toilets that provide waste flushing operation without consuming high volumes of water. While old-model standard toilets use as much as 3.5 gallons (≈13 liters) of water per flush, low-flow water toilets can consume as little as 0.8 gallons of water to clean the toilet bowl.
Looking for the best water-saving toilet flushes for your bathroom? We’ve got you covered!
Since low-flow toilets consume fewer volumes of water per flush, so beware of poor quality toilets in the market. They may consume low gpf, but they may fail in pushing solid waste from the bowl down into the drain lines. As a result, multiple flushes could be required for proper waste disposal, thus negating the real water-saving benefits.
But worry not…
With deep research, hands-on testing and thoroughly sifting through hundreds of user reviews against different products – we have rounded up a list of the best water-efficient toilet flushes for your household.
These top-rated models not only address the problem of high water consumption but also provide extremely powerful flushing on a gpf ranging as low as 0.6 to a max of 1.6. The result is the proper handling of solid waste and a 100% guarantee of a clean toilet bowl in just ONE FLUSH!
- 1 The Best 0.5 GPF to 0.6 GPF Toilets
- 2 The Best 0.7 GPF to 0.8 GPF Toilets
- 3 The Best 0.9 GPF to 1 GPF Toilets
- 4 The Best Heavy Duty Water-Efficient Toilet for Commercial Applications
- 5 How do low-flow toilets work on low-water consumption?
- 6 How much yearly water savings can I expect from low-flow toilets?
The Best 0.5 GPF to 0.6 GPF Toilets
The World’s Most Advanced Water-Efficient Toilet Class
A toilet operating on an average of 0.5 gpf is the lowest water consumption ever for any residential toilet. Here’s our roundup of the best 0.5 to 0.6 GPF toilets of 2020-2021.
Niagara Nano 0.5 GPF Elongated Toilet with Tank
The Niagara Nano is the world’s no.1 water-efficient toilet with a powerful flushing mechanism.
The toilet uses a fraction of water when compared to 99% of other toilets available in the market – consuming mere 0.5 gallons (1.8 liters) of water per flush. That is something TRULY INCREDIBLY water savings from a toilet!
Despite being too low on water consumption, there’s no way that Niagra Nano lacks in terms of performance. It’s 0.5 gpf partial flush is delivered by advanced vacuum-assist technology. A single flush sends solid waste down the drain lines in an instant and deep cleans the bowl every time… such is the power of the Niagara Nano.
Apart from its exceptional performance and water savings, we also have our two thumbs up for Niagara Nano’s design and functionality. This two-piece toilet fits perfectly against all bathroom motifs while its compact elongated shape offers more comfort than a round bowl. And if you think the solid waste is higher in amount, you can always go with Niagara Nano’s full 0.8 gpf flushing option.
Kohler 3901-NPR-0 Numi
Though this option is impracticable for a majority of us, if you are as rich as Bill Gates or Jeff Bezos, you can consider choosing this $7000 toilet for your bathroom. It is one of the world’s most water-efficient toilets, consuming only 0.6 gallons of water per flush.
But the list of its wonders does not end here!
In addition, the product combines the world’s most technologically-advanced cleaning technology with a top-notch infotainment system.
In terms of cleansing, it features a dual flush cleansing functionality with a self-cleaning wand, precision air dryer, and deodorizing filter all in one. Other perks included with this toilet are – heated seat and foot warmer, motion-activated hands-free seat opening/closing, built-in speakers for songs, FM radio, 8-color ambient lighting, and touch-screen remote control.
The Best 0.7 GPF to 0.8 GPF Toilets
The 0.7 to 0.8 GPF is the second most low water consuming toilet range combining design, efficiency, and phenomenal flushing performance.
Caroma’s Sydney Smart Point 8 Toilet
Consuming an average of 0.7 gallons per flush, Caroma’s Sydney Smart Point-8 is one of the lowest consumption high-efficiency toilets (HET) of 2020. It features a strong flushing mechanism with dual flush technology, a 1.0 gpf full flush, and a 0.7 gpf partial flush.
The toilet has a trapway about twice the size of the industry average, ensuring you never have to deal with a plunger again. With an emphasis on shape, structure, and versatility, the Smart Point 8 Toilet adds outstanding elegance and water efficiency to the industry.
The tank features a high-performance outlet valve that has been specially designed to ensure maximum flushing performance for this circular front bowl. The toilet is ideal for multi-purpose applications where water efficiency is significant, due to the considerable water conservation benefits achieved by the 1.0/0.7 gpf dual flush system.
TOTO ST746CEMG#01 DYNAMAX TORNADO FLUSH Toilet
Talk about water efficiency and advanced cleaning mechanism… and we have the TOTO ST746CEMG#01 as the best option. The toilet combines water-saving with 360-degree toilet bowl cleansing. The result is a reliable waste evacuation and a sparkling clean toilet bowl in just a single 0.8 gpf flush.
Apart from being a water-saving toilet, the product has made A-Z cleaning of toilet bowl possible on low water usage – all thanks to its DYNAMAX TORNADO flushing technology. When flushed, not only the waste is pushed down into the drain lines but also the toilet’s inner bowl is firmly rinsed through all the corners. This makes this product ideal for those who don’t want to deal with disgusting poop stains on the bowl’s wall.
In addition, the inner bowl is CEFIONTECT ceramic glazed – a special coating that inhibits stains, debris, and mold from attaching to the ceramic surfaces.
And Yes! this item also features a dual flushing mechanism. A full 1.28 gpf flush option can be triggered for cleaning a higher amount of solid waste.
The Best 0.9 GPF to 1 GPF Toilets
Have a look at the third most water-conserving toilets, consuming only between 0.9 to 1 gallons of water per flush.
American Standard 2887218.021 H2Option Dual Flush Elongated 0.92/1.28 gpf Toilet
Talk about power flushing and water efficiency… and we have the American Standard H2Option has the BEST OVERALL low-flow toilet.
The toilet features Dual Flush functionality which allows the user to select either a 0.92 gpf or 1.28 gpf option when they use the toilet. This allows for advanced water-saving as you can go with the partial flushing option for liquid or minor solid waste, thus avoiding the use of a full flush option where it is not needed.
And since the toilet operates on low water usage, the product is integrated with Siphon Jet Bowl Technology + PowerWash Rim that allows for proper disposal of solid waste as well as a shimmering clean toilet bowl in just one water-efficient flush.
To ensure much more effective cleaning, the entire toilet bowl is coated with “EverClean” – a special coating that inhibits the growth of stains, odor-causing bacteria, mold, and mildew on the surface of the toilet bowl.
Apart from its efficient flushing operation, there’s no compromise made on the toilet’s look either. Chrome-plated flushing buttons, two-piece elongated bowl design, optimal seating height, and color-matched bolts – make this toilet seat fit all bathroom motifs.
TOTO CST243EF#12 Entrada Two-Piece Round
The TOTO CST243EF is a round two-piece toilet that combines water-efficiency with power flushing. The toilet features an E-Max Flushing Technology, creating a strong flush by only consuming 1.28 gallons of water. As a result, you get a superbly clean and clog-free water bowl with no stains and mold build-up.
The Toto Entrada is built ‘really’ well and is professionally engineered to do a fantastic job. If your old toilet uses more water and gets clogged frequently, or if you have kids in your home who forget to keep the flush lever pushed for several seconds for proper solid waste disposal – this product is one of the better options because it produces a strong flush by pressing the level gently and delivers performance without consuming a lot of water.
Kohler K3946-RA0 Adair Toilet
The Kohler K3946 is a combo of water efficiency, pressure-assisted powerful flushing, modern design, and ultra-comfortability. It’s a complete package for your bathroom and offers much more than you can expect from an affordable low-flow toilet!
Kohler’s one-piece single toilet features a unibody design that gives a very nice feel to the look of the bathroom. However, the product’s main specialty lies in its water-conserving and powerful flushing abilities. This toilet is capable of flushing poop on a mere 1.28 gallons of water consumption. It’s Aqua Piston Flushing System helps pressurized water to flow inside the toilet bowl from all directions. The result is effective flushing and a clean bowl.
Other specialties of this water-saving toilet seat are a one-piece design with less exposed seal material, a quiet-closing seat, and a chair-height seating.
How do low-flow toilets work on low-water consumption?
Low-flow toilets are engineered well to deliver powerful flushing on low water consumption. This is made possible through their pressure-assisted mechanism that combines both water and air pressure to push solid waste down the drain lines. Other features like wider flush valves, large trapways, and unique design also contribute to creating a powerful flush on low-water usage as well as resisting drain clogs.
How much yearly water savings can I expect from low-flow toilets?
The 90’s toilets use 3.5 to 7 gallons of water per flush, as compared to today’s high-efficient toilets that use between 0.5 to 1.6 gallons of water per flush. On an average calculation, a household can expect at least 50% less water consumption and 50% less yearly water bills by investing in today’s low-flow water-efficient toilets.