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Best water saving toilets 2021

To be a candidate for the most water efficient toilet, there are certain requirements that need to be met. The most obvious of which is a low amount of water being consumed with each flush.

Obviously by choosing efficiency over power, you’re also doing your bit for the environment which is always a plus. So today, we list out, review, and analyze several of the top rated products currently on the market.

Top 3 picks

MS854114ELG#01 Eco Ultramax TOTO Eco Ultramax 9/10
K-3817-0 Memoirs Kohler K-3817-0 Memoirs 7/10
2988.101.020 Concealed Trapway American Standard 2988.101.020 Concealed Trapway 8/10

Best low flow toilets – our reviews

We research into several high efficiency toilets in the industry to help you find units that are WaterSense compliant. These types of loo usually have lower than average consumption per flush. Generally around 1.28 gallons with every flush. Old styles used to consume larger numbers like three gallons, so the difference that it can potentially make, when you consider the amount of toilets on the planet, is quite big. Even against the standard 1.6 gallon options they are saving up to 20%.

However, some people make the incorrect assumption that because they consume less water, the power produced isn’t as effective. When really, they make better use of the water in the tank to still effectively flush waste away. Listed below are some of my favorites.

2988.101.020 Concealed TrapwayAmerican Standard 2988.101.020

A low flush toilet that takes just 1.28 gallons, the 2988.101.020 utilizes the cadet 3 flushing system which provides a siphon jetted bowl to distribute water effectively to give a clean, smooth flush that gets rid of waste. To give you an idea of performance, it’s been tested and proven to handle one thousand grams of waste without issues.

Made by a respected brand in the industry, this product has a modern design that doesn’t just take into account the environmental factors. It comes with what’s called an EverClean finish that will do a great job in minimizing odors, and keep the bowl clean of bacteria and mildew.

It’s also aesthetically pleasing, looks modern, and isn’t going to cost too much, in the mid tier price band. Additionally, you’re covered by a solid warrant policy that cover you for up to five years.

K-3817-0 MemoirsKohler K-3817-0

Another 1.28 gallon option from a well respected brand called Kohler. Saves approximately 20% of the amount 1.6 gallon products consume which is a major positive.

Putting aside the Eco-Friendly specs and looking at the bigger picture, you can certainly see a full spec list that allows it to go toe to toe with many of its top toilet competitors.

Included within these specifications are the elongated bowl which adds to user comfort levels along with the comfortable chair height seating. Easily accessible, and less hassle for those with slight mobility issues like myself with arthritis.

Upon flushing, water will effectively flow from each and every side to clear and clean the bowl. This produces a good amount of power and makes more use of the smaller amounts of water it’s working with.

Those of you wanting specifics in dimensions will be pleased to know it’s reasonably compact meaning most medium to smaller bathrooms shouldn’t encounter problems fitting it. The dimensions provided are as follows: 30.4 inches by 18.9 inches by 31.1 inches.

However, do note that this’ll be a  more expensive option to get your hands on. It’s all about balancing features with value.

MS854114ELG#01 Eco UltramaxToto MS854114ELG#01 Eco Ultramax

Another great product produced by the great Toto toilets. What we have here is a fantastic looking, water saving option that is on par on consumption – 1.28 gallons, and still looks modern and includes a wealth of differing features that will make everyday use for consumers convenient as can be.

Finished with SanaGloss that provides the perfect glazing and smooth surface for the siphon jet flush to effectively clean the bowl after use.

Made from vitreous china and measures 28.2 inches by 16.5 inches by 29.2 inches.

The trip lever is made from polished chrome and whilst it may not be as easy to use as hands free toilets, it handles the job it’s tasked with well.

An upper tier choice that isn’t really suitable if you’re working on a tight budget. But for those of you not too concerned about the price, this is certainly a sensible option especially considering it has received plenty of great feedback and ratings on various sources around the web that we use to research.


These efficient toilets make use of the flushing systems they have to consume water sensibly and effectively to limit the amount that is wasted. They are certainly worth considering over the standard 1.6 gallon products, as most of them will still handle the day to day use, with several manufacturers stating they can handle up to one thousand grams of waste.