Best EPA WaterSense Certified Toilets

The Drake II is the WaterSense toilet we recommend to most buyers because it ends the trade-off the certification is supposed to prevent: it saves the most water while flushing as hard as any toilet on the market. It carries the EPA WaterSense label at 1.28 gallons per flush and still earns the full 1,000-gram MaP score, the best water-to-clearance ratio you can buy in a single-flush toilet.

The Drake II uses TOTO's Double Cyclone flush, which sends the 1.28-gallon tank through two angled nozzles instead of a ring of small rim holes, so the water swirls around the bowl and feeds a strong siphon. That engineering is exactly how it hits a 1,000-gram MaP score on so little water, and the fully glazed CeFiONtect trapway lets waste pass cleanly and keeps the bowl cleaner between washes, which also cuts the urge to flush twice and waste the savings.

Owner reviews are unusually consistent on low clog rates over long ownership, and parts are available everywhere. It is a two-piece without a skirt, so there is a tank-to-bowl seam and an exposed trapway to wipe around. For a buyer who wants the WaterSense label and a flush that never makes them reach for the handle again, this is the default pick.

The UltraMax II takes the Drake II's Double Cyclone flush and puts it in a sleek one-piece body with TOTO's CeFiONtect glaze. It carries the same EPA WaterSense label and the same 1,000-gram MaP score on 1.28 gallons, so you give up nothing on water savings or flush strength while gaining a seamless silhouette with no tank-to-bowl seam to scrub.

Because the tank and bowl are a single casting, there is no seam to trap grime, which is the main day-to-day advantage over the two-piece Drake II. The CeFiONtect glaze helps waste and mineral buildup slide away, so the bowl needs less scrubbing and is less likely to prompt a wasteful second flush, which keeps the water savings intact.

Owners rate it among the most reliable efficient toilets available, with the same low clog rate as its two-piece sibling. It costs more than the Drake II and, as a one-piece, it is heavy, so a helper is wise on installation day. For a quiet, powerful WaterSense flush in a low-maintenance body, it is the one-piece to beat.

The Aquia IV is the WaterSense pick when you want to push water use below even 1.28 gallons. It is a dual-flush toilet with two buttons on the tank: a light flush of about 0.9 gallons for liquid waste and a full flush of 1.28 gallons for solids. Because most flushes in a typical home are liquid only, its average gallons per flush in daily use lands well under any single-flush model here.

It uses TOTO's Dynamax Tornado dual-nozzle siphon and a glazed CeFiONtect bowl, so the full flush still clears a normal load cleanly at a published 800-gram MaP. The skirted body hides the trapway behind a smooth panel, so the base wipes clean in one pass and looks modern, which fits the efficiency-minded bathrooms it usually goes into.

The tradeoffs are a slightly lower full-flush MaP than the 1,000-gram leaders and the small habit of choosing the right button. For most homes neither matters much in practice, and the daily water saved is the highest here. It also features in our roundup of the best water saving toilets of 2026, where dual-flush behavior matters most.

The Cimarron pairs the EPA WaterSense label with a strong 1.28-gallon flush and a more refined look than most value toilets. It uses Kohler's Class Five canister flush, which lifts a canister seal to release the whole tank through a large 3.25-inch opening rather than a small flapper, giving it the punch to reach a 1,000-gram MaP score at 1.28 gallons.

The canister flush seals better over time than a standard flapper, so it is less prone to the silent leaks that quietly waste water and undercut a low-flow toilet's whole purpose. It is a comfort-height elongated bowl that suits most adults, and the smoother base sides are easier to wipe than a fully contoured budget two-piece.

The canister flush is slightly more audible than a TOTO siphon, and the stock seat and trip lever feel basic. But for buyers who want dependable WaterSense performance and a cleaner look without a premium price, the Cimarron is the value standout, and it is a common choice for full remodels where looks matter alongside efficiency.

The Cadet 3 is American Standard's dependable everyday toilet, and it earns its WaterSense place by clearing the bowl hard at just 1.28 gallons. It uses a siphon flush fed by a wide 3-inch flush valve, larger than the 2-inch valves on many budget toilets, which gives a faster, stronger pull and a full 1,000-gram MaP score on certified water use.

The bowl has an EverClean antimicrobial surface that helps slow stains and odors between cleanings, which keeps the bowl looking clear and reduces nuisance reflushing that would erase the savings. It installs in a standard 12-inch rough-in and uses common parts, so repairs are cheap and quick, which is exactly what you want in a workhorse replacement.

It is a straightforward comfort-height two-piece without the premium glaze of a TOTO, and most complaints center on the basic stock seat rather than the toilet itself. But on pure WaterSense flush performance per dollar it is hard to beat. For a no-drama certified swap, it is a smart, affordable choice.

The Santa Rosa brings a strong WaterSense flush to a compact one-piece body, with a shorter front-to-back footprint than a full elongated toilet while keeping a comfortable compact-elongated seat. It uses Kohler's AquaPiston canister flush, which releases water around the full 360 degrees of the bowl, so the 1.28-gallon tank scours evenly and reaches a 1,000-gram MaP score.

The one-piece skirted design hides the trapway contours and wipes clean in seconds, which suits a small bathroom where every surface is close to hand. The AquaPiston canister releases the full tank quickly for a strong, wide rinse, and the compact footprint installs in a standard 12-inch rough-in like the rest of this list.

The canister flush is slightly louder than a siphon, and as a one-piece it is heavy to set, so a helper is wise on installation day. But for a space-saving toilet that still carries the WaterSense label and flushes hard, the Santa Rosa is the standout, and it appears in our wider look at the best low flow toilets (1.28 GPF and under).

The Woodbridge T-0019 is a skirted one-piece dual-flush toilet that delivers WaterSense water use and a clean modern shape for less than the premium brands. Its dual-flush button offers a light flush of about 1.0 gallon and a full flush of 1.28 gallons, both certified, with a siphon-jet bowl that pulls the contents down smoothly.

Owner reviews praise the soft-close seat included in the box, the easy-clean skirted body and the low water use. The dual-flush button drops most daily flushes to about 1.0 gallon, and the full flush still clears a typical household load in one pass at an 800-gram MaP, which is plenty for most homes.

The main tradeoffs are a lower full-flush MaP than the 1,000-gram leaders and a younger brand with less long-term parts history than TOTO or Kohler, so keep proof of purchase for warranty support. If you want a certified dual-flush one-piece with a contemporary look without a high price, it is a strong value option.

The Swiss Madison St. Tropez is the WaterSense pick for buyers who want a sharp, contemporary one-piece without spending what a premium brand costs. It is a skirted dual-flush toilet with a low-profile tank, offering a light flush of about 0.95 gallons and a full flush of 1.28 gallons, both certified, with a glazed siphon-jet bowl.

The low-profile tank and skirted body give it a clean, almost European look that stands out in a modern bathroom, and the dual-flush button keeps everyday water use low. The 800-gram full-flush MaP is comfortably enough for a typical household, and the glazed bowl helps waste slide through so you rarely need a second flush.

As with other newer brands, the tradeoffs are a shorter parts and support history than TOTO or Kohler and a full-flush MaP below the top tier, so keep your documentation for warranty claims. For a design-forward certified toilet at a value price, it is a strong contender, and it also appears in our guide to the best eco friendly toilets for a greener bathroom.

Gerber is a respected plumbing brand that does not get the consumer attention of TOTO or Kohler, which is exactly why the WaterSense Avalanche is a value find. It uses a gravity siphon-jet with a wide flush valve to reach a 1,000-gram MaP score on 1.28 gallons, matching the headline brands on raw clearance while carrying the certification.

The wide flush valve and well-shaped bowl give the Avalanche a strong, clean siphon flush that owners rate highly for both clearance and reliability. Because Gerber is more common in trade supply houses than big-box retail, parts and accessory selection can take slightly more searching, but the core WaterSense flush performance is genuinely top tier.

Build quality is solid and the price typically sits below the premium names, which makes it a quiet recommendation among plumbers who know the brand. The seat and supply line are sometimes sold separately, so check the listing before ordering. For a powerful certified flush without paying for a familiar badge, it deserves a serious look.