We’ve scoured the market to find the models with the best flushing power. In addition to looking for all the elements we’ve mentioned that contribute to strong flushing power, we took an in-depth, comprehensive look at buyer reviews of all models we reviewed, to examine how they performed in the real world.
Below, you’ll find our own in-depth reviews of all the winners!
Check out our favorite high-powered flushing toilets!
If your old throne has an anemic flush, you’re not alone! It’s common for older toilets to suffer from lower flushing power. Though modern toilets use less water than older counterparts, manufacturers have introduced technology to add flushing power to low-flow toilets!
So the good news is, if you’re replacing your current toilet with a new model, it’s possible to improve flushing power while still reducing your water bill—and your environmental footprint.
But what makes a more powerful toilet? Flushing power can come from a few different elements, including the size of the trapway (the hole at the bottom of the toilet bowl), the glaze on the trapway, or the flushing assistance mechanisms inside the tank. It can all get pretty complicated for the average shopper to sort through, so we created this guide to help you out in your search!
- American Standard Champion 4
- Toto Ultramax 2
- Toto Supreme
1. Our current favorite for most buyers: the American Standard Champion 4
Our number one choice is the American Standard Champion 4, and we aren’t alone in this. The Champion is at the top of many best toilet lists online, particularly when it comes to flushing ability. It’s also one of the most highly praised toilets among users on Amazon.
American Standard’s highly regarded toilet comes in either a one- or two-piece design with an ADA-compliant seat height of 16 ½ inches. It also features an EverClean glaze in order to help make it easier to get clean and to stay clean, and comes in bone, linen and white colors.
The Champion 4 uses 1.6 gallons per flush. Its flushing strength is assisted by siphonic jet technology and one of the largest flush valves available on the market. It also has the largest glazed trapways you can find at 2 ⅜ inches.
The Champion 4 packs a lot of flushing power, and if you’re looking for a toilet that will remain virtually clog-free for years to come, you might have just found the perfect model for your home.
Suspicious? American Standard has created a demo video that will impress even the most skeptical shoppers. To demonstrate the flushing power of the Champion 4, a number of bulky items are flushed down without any trouble—including 18 golf balls, 38 rubber tubes, and 40 feet of toilet paper.
Reviewers on Amazon were also particular impressed with the flushing power of the Champion 4, and most positive reviews took a moment to marvel at this particular feature. They said that it easily out-flushed older toilets they’d owned, which had needed twice as much water or more to get the job done. Since it was so powerful every time, they were hard pressed to imagine a scenario in which it might clog.
The aesthetic design of the unit was also quite popular with most owners. The Champion 4’s EverClean coating contributes to the sleek appearance of the toilet, and helps prevent the growth of bacteria and odor-causing buildup.
EverClean also helps the interior of the toilet stay clean, which is an important quality in low-flow models. Lower water volume can lead to a dirtier bowl over time, but American Standard’s gloss can act as a measure against this. Previous buyers said it stayed much cleaner than other models they had used, and was especially remarkable in that it didn’t develop an unsightly stain or film over time. That’s where that extra power comes in handy-it flushes away the buildup you’d normally find around the bowl.
Another reason to have confidence in the Champion 4: this toilet comes with a 10-year limited warranty, the longest of any other model on this list.
There were more complaints on the page for the less expensive two-piece version of the Champion 4. Those critiques were rarely about the toilet itself. There were more complaints about the tank knocking against the wall, and the quality control in the shipping process—a number of people complained that they received their order with missing parts or wrong parts.
On the page for the one-piece version, there were a handful of other complaints about the shipping (receiving items cracked, missing pieces, etc.), but fewer users seemed to have this problem.
One potential downside for shorter users is the height of the toilet. Though it’s advertised as a right height toilet, the Champion 4 may seem higher than older models of toilet. For most adults, particularly the elderly, however, this is actually a good thing, since the taller build of the toilet is easier on the joints.
Despite a limited number of complaints about the quality control of the shipping—which may have more to do with the shipping company than American Standard—this toilet receives mostly glowing reviews from the people who own it.
If you’re looking for a toilet that doesn’t clog, the American Standard Champion 4 is our top pick. With a powerful flush, sleek design, and long-term warranty, this toilet will be an asset to your home for years to come.
2. Water Saving Option: Toto Ultramax II
For those who live in a water-restrictive state—like California, Texas and Colorado—a toilet with 1.6 gallons per flush simply isn’t an option. Many states have imposed restrictions on water usage in bathroom fixtures—including toilets.
California and Texas have both mandated that all new toilets installed in their states cannot use more than 1.28 gallons per flush. As more and more states follow suit, we thought it was important to review an option that complied with state limits.
The Toto Ultramax II is a great choice for people who live in a water-restricted state, but don’t want to compromise flushing power.
Alternatively, you may just be interested in lowering your water bill or reducing your household environmental impact.
The Ultramax II uses only 1.28 gallons per flush, but suffers little loss of ability from the lower volume of water. The gravity-assisted flush uses Toto’s Double Cyclone technology, which involves two high-powered nozzles that move water around the bowl quickly to empty and clean the bowl every time.
The Ultramax II can either come in an elongated or round front model, and the interior of the bowl is protected with a coating of Toto’s SanaGloss. SanaGloss is a super smooth “ionized barrier” used to help keep the toilet clean and repel bacteria and mold.
Also ADA-compliant, this model has a seat height of about 18 inches. This unit can be purchased with either an elongated or round front. It’s also a one-piece toilet, with a shiny and smooth appearance.
Like the American standard, the Ultramax II rated favorably with the vast majority of reviewers on Amazon—particularly in terms of flushing performance.
The Double Cyclone works well, according to owners, many of whom were pleasantly surprised that their flushing power rose as their water bill went down. The drop in water use without loss of performance is a strong benefit of the Toto Ultramax II. Previous buyers were especially impressed with the power-to-usage ratio with this one.
Long-term owners also asserted that their Ultramax II had never clogged after years of ownership, indicating that the mechanism of this toilet can withstand the test of time. They said they’d never experienced that kind of dependability on older models.
The one-piece design and general appearance of the toilet also drew praise among owners. Reviewers commented on how quiet the Ultramax was, due in part to the quiet, gravity-assisted flush and the soft close seat, which prevents accidental slamming of the lid late at night.
For many owners, the SanaGloss finish also worked to make their lives much easier, helping the toilet stay cleaner than previous models of toilets in their homes. It works a lot like the EverClean finish we looked at on the Champion. Previous buyers said they had to clean the bowl much less frequently. They also said that when they did have to clean, it was quicker and easier thanks to the finish.
There were a few complaints from users that the unit used too little water, and flushing performance was diminished compared to higher-flow toilets they owned.
This is likely a problem that can be found in any low-flow toilet. Still, if flushing power is your main goal and you are not bound by any water restrictions, you might be better off purchasing the Champion 4.
Similar to the Champion 4, the height of the toilet also proved problematic for some shorter reviewers. Depending on the average height of people in your household, the ADA-compliant height of the Ultramax II could be considered a positive or negative element. We found that reviewers around 5′ or shorter found it awkwardly high.
The SanaGloss coating, though mostly a positive element for users, was something of a mixed bag for others. The coating is sensitive and will wear down if you scrub it with a coarse brush. Some owners reported that theirs has worn off over time. This extra step for cleaning may be a chore for future owners.
The majority of owners were very happy with their Toto Ultramax II. Though it uses less water, the flushing mechanism of this toilet seems to perform quite well. The amount of water saved is a must for homeowners in certain states and a happy bonus for the rest.
With an attractive design and highly rated performance, we recommend the Ultramax to any shopper who is looking for a low-flow toilet that can still clear the bowl in a single flush and minimize clogging for years to come.
3. Our ultimate choice: Toto Supreme
The esteemed Toto company also makes our third pick for powerful flushing toilets. The Supreme is a high-end model that tops many lists for the most powerful flushing toilets. It also earns a substantial amount of praise among owners.
The Toto Supreme has a low, squat build that’s designed for maximum comfort. The elongated seat also features the soft close design meant to prevent slamming noises when closing it. It’s also a one-piece toilet, with a seat height of 15 inches.
Like the Champion 4, the Supreme uses 1.6 gallons for it’s powerful flush. The Toto model is set apart, however, by its wide 3-inch flush valve. It also features a glazed trapway set at 2 ⅛ inches—significantly wider than most models.
This model also uses a gravity-assisted flush that moves much faster than competing models. The combination of a wide, glazed trapway, large flush valve and fast-moving water makes for a toilet that will be difficult for any size family to clog.
The Toto Supreme’s powerful flush and large trapway are two of the main draws of this model of toilet. If you’re frustrated from years of frequent clogging and plunging your old toilet, the Supreme might just be the perfect model for your home. Reviews from professional installers cited the Supreme as one of the best models on the market today. They said that the strong flush kept the internal components clean, which is essential in preventing clogs. As with the other models we’ve reviewed here, previous buyers found that the Supreme stayed clean easily thanks to the strong flush power.
Unlike the other models listed here, the short but comfortable build will make this toilet a good option for shorter households or families with children. The sleek and low profile design of the toilet itself has also drawn praise from its owners. They said that the shorter height was comfortable and relaxing to use. They also noted that it made their bathroom appear roomier in comparison to the toilet.
Perhaps the biggest downside of the Supreme is the price tag, which is nearly twice that of the other two models here. A number of reviewers noted the higher than average cost, though most felt it was worth the money.
The short build of the toilet can be a good thing or a bad thing, depending on your body and your needs. Some older adults, for example, may find the Toto Supreme challenging on their joints compared to the other two models listed here. Very tall people may find this toilet to be uncomfortable to use in general.
A few users also noted the flush was fairly noisy despite the fact that the Supreme’s product description claims that it’s as quiet as other models.
If you’re willing to cough up the cash for this toilet, you won’t be disappointed in its unparalleled flushing power. Shoppers who are looking to throw their plunger away entirely should definitely give this model a look.
Families with children or short individuals may also find this model to the be the most comfortable on the list. Compared to the Champion 4 and the Ultramax II, the Toto Supreme will be a much more manageable height.
All the toilets on this list are renowned for their flushing power, which has been tested and reviewed by hundreds of satisfied homeowners. The right model for you depends on your needs and your budget.
If you’re looking for a powerful flushing toilet at a reasonable price, with a great reputation among reviewers, plumbers, and homeowners, the American Standard Champion 4 is one of the best flushing models on the market today.
Limited by water restrictions in your state, or looking to shave money off your water bill while helping the environment? The Ultramax II is the perfect water-saving toilet that doesn’t lack the flushing strength you’re looking for.
Those with a slightly higher budget who never want to deal with another clog in their lifetime should check out the Toto Supreme. This is also the best option for large households with children, or shorter individuals.
Looking for more ways to conserve water without sacrificing flushing power? Check out our favorite Dual Flushing Toilets. If you like the design of these models, you should check out our favorite One-Piece Toilet or visit our Best Toilet Reviews!