Best Eco Friendly Toilets for a Greener Bathroom

The Aquia IV is the most eco friendly toilet most homes can buy, because its 0.8 gallon partial flush handles the many liquid-only uses each day while a 1.28 gallon full flush clears solids, pulling the household average well below any flat single flush model.

It uses TOTO's Dynamax Tornado flush, which feeds water through dual jets to create a swirling rinse that scrubs the bowl rather than just dumping water down the front, so the 800 gram full flush clears solids cleanly on a single push. The skirted two-piece body has smooth sides with no contoured trapway bumps, and the CeFiONtect glaze helps waste slide away between cleanings.

Aggregated owner reviews run deep and consistently praise the low water use and quiet, capable flush, with only a small share noting the push-button takes guests a moment to learn. Because the bulk of daily flushes are liquid-only, the 0.8 gallon mode is what drives the real savings, and that is why it tops this list. For a deeper look at this style, see our guide to the best low flow toilets at 1.28 GPF and under.

The UltraMax II proves an eco toilet does not have to flush weakly, pairing a flat 1.28 gallon flush with a 1,000 gram MaP score, the practical maximum, so it almost never forces a wasteful second flush.

It uses TOTO's Double Cyclone flush, which feeds water through two side jets to create a swirling rinse that scrubs the whole bowl instead of dumping water down the front. As a glazed one-piece there is no tank-to-bowl seam to clean, and the CeFiONtect coating helps waste and minerals slide away.

Owner reviews are some of the strongest in the category, repeatedly citing a powerful flush and almost no clogs at the low 1.28 gallon volume. The trade-offs are a higher price than value WaterSense models and the weight of a one-piece during installation. For a household that wants the greenest toilet that never makes you push twice, this is the default choice.

The Cimarron is Kohler's mainstream WaterSense toilet and the best balance of water savings, price and nationwide parts support on this list, using 1.28 gallons per flush while reaching a 1,000 gram MaP score.

Its AquaPiston canister releases water into the bowl from all sides rather than a single point, giving a strong, even rinse on a low water volume, so a single flush clears the bowl reliably. Because Kohler is sold in every big-box store, replacement seals and valves are easy to find locally for years.

Owner reviews praise the dependable flush and the ease of repair, with the main gripe being that the two-piece seam and base contours need occasional wiping since it is not skirted. For a dependable eco toilet with the easiest parts availability of any pick here, the Cimarron is the smart value buy and a frequent name in our roundup of the best EPA WaterSense certified toilets.

The St. Tropez is Swiss Madison's sleek skirted one-piece, and its dual flush pairs a very low 0.8 gallon partial flush, among the lowest available anywhere, with a 1.28 gallon full flush for solids.

For the many liquid-only uses in a typical day it draws the least water of almost any toilet here, while the full flush still reaches an 800 gram MaP score, enough to clear solids cleanly without pressing the button twice. The fully skirted base wipes clean in seconds and the seat and button plate are included.

Swiss Madison is a newer brand than the established names, so its long-term track record and parts depth are not as deep, and a few owners note the compact tank can refill a little slowly between flushes. For a water-minded buyer who wants a modern look, it is a strong eco value and a regular pick among the best water saving toilets of 2026.

The T-0019 is the skirted dual flush one-piece that built Woodbridge's reputation, offering a designer body that looks far more expensive than it costs while still trimming water with a low partial flush.

It uses a siphon dual flush with a 1.0 gallon partial and 1.6 gallon full flush in the standard version, reaching an 800 gram full-flush MaP score, and Woodbridge also sells a 1.28 gallon WaterSense variant for buyers who want the lower full flush. The seamless skirted shape hides the trapway entirely and wipes clean fast.

Owner reviews run deep and consistently praise a clean flush, a quiet refill and the included soft-close seat. Woodbridge sells under several similar model numbers, so confirm the exact number and flush volume before ordering, and note that parts are easiest to source online. For designer styling with real water savings, it is a standout.

The Cadet 3 proves you do not have to spend a lot to get a powerful eco friendly toilet, using 1.28 gallons per flush and reaching a 1,000 gram MaP score through a large 3 inch flush valve.

The wide 3 inch valve dumps water into the bowl faster and harder than a standard 2 to 2.5 inch valve, giving a forceful single flush that clears heavy loads as strongly as toilets costing far more, all at the WaterSense water limit. The glazed EverClean trapway resists the buildup of stains and odor-causing bacteria.

Owner reviews highlight the strong flush per dollar and a fresher bowl between cleanings, with the main note being that the fast flush is a touch louder than a quiet siphonic model. For the strongest WaterSense flush per dollar, the Cadet 3 is the clear budget answer.

The Drake is one of the most widely owned toilets in North America, and the 1.28 gallon WaterSense version brings that proven flush into the efficient range while reaching a 1,000 gram MaP score.

Its deep owner-review history runs into the thousands and consistently reports a reliable, powerful flush with very few clogs. Because the Drake has been in production so long, its internal parts are standard and easy to source, making it one of the most repairable toilets you can own.

That longevity is itself a form of saving, since a toilet that lasts decades without replacement conserves the water and material a swap would cost. It is a two-piece with a seam to wipe, and the bowl is sold separately from the tank on some listings, so confirm you are ordering the complete 1.28 gallon set.

The Avalanche is Gerber's value dual flush workhorse, pairing a 1.1 gallon partial flush with a 1.6 gallon full flush and reaching a strong 1,000 gram MaP score, so it trims daily water use without sacrificing clearing power.

Gerber is a long-established commercial and residential plumbing brand, and the Avalanche reflects that with a sturdy, no-nonsense build and a dependable dual flush valve. The 1,000 gram full flush is among the strongest of any dual flush toilet on this page, so solids clear on one push.

Owner reviews praise the reliable flush and the brand's plumbing pedigree, with the main note being that the 1.1 gallon light flush is not as low as the 0.8 gallon modes on the Aquia IV or St. Tropez. For an affordable dual flush with serious clearing power, it is a smart pick.

The Santa Rosa is Kohler's compact comfort-height one-piece, using 1.28 gallons per flush with the AquaPiston canister to deliver an efficient, even flush in a space-saving footprint.

Its AquaPiston canister feeds water into the bowl from all sides for a strong, even single flush at the WaterSense water limit, and the compact elongated bowl gives elongated comfort in a footprint close to a round bowl. The one-piece body has no seam to clean.

Owner reviews praise the space-saving design and reliable flush, with the main note being an 800 gram MaP score that is strong but below the 1,000 gram leaders. For a small or powder-room bathroom that still wants low water use and a clean one-piece look, the Santa Rosa is a sensible eco pick. For more on fit, our pillar guide to the best flushing toilets covers sizing in detail.