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Brand Comparison

Kohler vs TOTO Price Comparison: Which Is Better Value?

Both brands build excellent toilets, but they serve different buyers. This guide breaks down where each brand sits on price, flush performance, water efficiency, and long-term reliability so you can spend your money where it counts.

Why Trust Best Flushing Toilets

Research updated June 2026.

Quick Answer

Kohler offers broader price coverage and easier US parts access, making it the smart pick for budget-minded buyers and rental properties. TOTO earns its premium through MaP scores that routinely hit 1,000 grams, CeFiONtect glaze, and Tornado Flush technology that genuinely reduces cleaning. Match your budget and cleaning tolerance to the right brand.

Kohler and TOTO are the two names that surface in nearly every serious toilet research session. Both hold EPA WaterSense certification across most of their lineups. Both produce models that earn MaP flush-test scores at or near the 1,000-gram maximum. Yet they feel like different products for different buyers, and the price gap between them is real, persistent, and worth understanding before you open your wallet.

This comparison covers their entry, mid-range, and premium tiers; how their core flush technologies stack up; what owner reviews consistently say after six to twelve months of daily use; and where each brand falls short. You will also find comparison tables, expert takes, and a detailed FAQ so you leave with a complete picture.

For a broader look at top performers across all brands, see our guide to the best flushing toilets available today.

How Do Kohler and TOTO Compare on Price Across Their Product Lines?

Kohler covers a wider price range than TOTO, with entry-level gravity-flush models starting meaningfully lower than comparable TOTO options. TOTO's entry point is higher, but every tier of TOTO tends to include more proprietary technology per dollar. Buyers spending at the mid-range or above often find TOTO's value stronger; buyers working with a tighter budget typically find Kohler easier to justify.

Tier Kohler Model TOTO Model Kohler MaP Score TOTO MaP Score GPF WaterSense
Entry Wellworth Entrada 800 g 800 g 1.28 Both
Mid-Range Highline Classic Drake (MS776) 800 g 1,000 g 1.6 / 1.28 Kohler 1.28
Mid-Range Best Value Cimarron Drake II (MS454) 1,000 g 1,000 g 1.28 Both
Upper Mid Santa Rosa UltraMax II (MS604) 1,000 g 1,000 g 1.28 Both
Dual-Flush Veil Dual Flush Aquia IV (MS446) 1,000 g (full) 1,000 g (full) 1.28 / 0.8 Both
Smart / Luxury Veil Intelligent Neorest Series 1,000 g 1,000 g 1.0 / 0.8 Both

The mid-range row is highlighted as best value because both the Kohler Cimarron and the TOTO Drake II land at 1,000 grams on the MaP flush test, carry WaterSense certification at 1.28 GPF, and represent the most accessible price points where either brand consistently hits top flush performance. The Drake II adds CeFiONtect ceramic glaze; the Cimarron relies on a wider trapway and AquaPiston canister valve.

What Flush Technology Does Each Brand Use, and Does It Actually Matter?

Kohler's AquaPiston canister valve opens 360 degrees for a consistent water rush, while TOTO's Tornado Flush generates a 360-degree cyclonic rinse using two angled rim jets. Both approaches eliminate the traditional flapper and deliver full-bowl coverage on every flush. In practice, the Tornado Flush moves water in a sustained spiral that tends to leave the bowl cleaner with less scrubbing, while the AquaPiston delivers strong initial force that is particularly effective on solid waste.

Expert Take

Published MaP testing data from map-testing.com shows that TOTO's Drake II and UltraMax II consistently score 1,000 grams, the maximum measurable bulk waste load, across multiple test cycles. Kohler's Cimarron reaches 1,000 grams as well, which confirms that both brands can clear maximum loads. The difference shows up in bowl cleanliness between flushes: TOTO's Tornado Flush combined with CeFiONtect glaze creates a surface that aggregated owner reviews describe as "self-cleaning" significantly more often than Kohler surfaces receive that description.

Kohler AquaPiston Technology

The AquaPiston canister replaced Kohler's traditional flapper valve starting in the early 2010s. The canister sits at the center of the flush valve and opens from all sides simultaneously, allowing water to enter the bowl at 360 degrees. This full-circumference entry reduces the typical surge-then-trickle pattern associated with older flapper systems and delivers more consistent hydraulic pressure throughout the flush cycle. The canister is also rated for more than 10 million flushes by Kohler's published specifications, which translates to roughly 70 years of average daily household use before the internal seals degrade.

The Highline and Cimarron both use AquaPiston. The Highline Classic's 1.6 GPF version scores lower on MaP than its 1.28 GPF sibling, a counterintuitive result explained by the fact that less water moving through a well-engineered trapway creates more velocity than a larger volume moving slowly. If you are comparing Highline models, the 1.28 GPF Highline Arc edition is the one to evaluate.

TOTO Tornado Flush Technology

TOTO's Tornado Flush uses two powerful nozzles positioned on opposite sides of the rim rather than the standard ring of rim holes. These nozzles project water at an angle so it travels in a centrifugal spiral around the bowl before concentrating at the siphon jet. The result is a rim-to-jet-to-drain path that covers the entire interior surface with every flush, including areas that traditional gravity-flush rim holes often miss.

The Drake II (MS454) and UltraMax II (MS604114) both use this system paired with CeFiONtect glaze, a proprietary ion barrier glaze that creates an ultra-smooth surface at the microscopic level. TOTO's published data indicates that waste and mineral deposits bond to CeFiONtect at a fraction of the rate they bond to standard vitreous china, which is consistent with what aggregated owner reviews report after six or more months of use.

The Aquia IV takes the technology further with a 1.28 / 0.8 dual-flush system where both flush modes carry full MaP scores. The 0.8 GPF half-flush on the Aquia IV scores 500 grams on MaP, well above the 250 grams that most liquid-waste flushes actually require. Related: see our guide to best dual-flush toilets for a full comparison of that category.

Which Brand Has Better Water Efficiency: Kohler or TOTO?

Both brands offer EPA WaterSense-certified models at 1.28 GPF across most of their mid-range and upper lines, meeting the same 20% savings threshold over the federal 1.6 GPF standard. TOTO has a broader offering at 1.0 GPF and 0.8 GPF, particularly in the Aquia IV and Neorest lines, giving TOTO an edge for buyers prioritizing maximum water savings. Kohler's dual-flush models also reach 0.8 GPF on the half-flush.

EPA WaterSense certification requires a toilet to use no more than 1.28 gallons per flush and pass a minimum MaP score of 350 grams. Both Kohler and TOTO meet this threshold across most of their current lineup. The certification label is the reliable shortcut for buyers who want to avoid water-wasting older designs. You can verify current certification status on the EPA WaterSense product search at epa.gov/watersense.

The calculation that matters for most households: replacing a 3.5 GPF toilet from the 1980s with a 1.28 GPF WaterSense model saves roughly 20 to 22 gallons per person per day. For a family of four, that is approximately 30,000 gallons per year. At average US water rates, the toilet pays back its purchase cost in water savings within three to five years regardless of whether you choose Kohler or TOTO. The brand choice at this level is about performance and reliability, not water savings math.

Expert Take

TOTO's Aquia IV is the standout water-efficiency story in this comparison. Its 0.8 GPF partial flush combined with a 1.28 GPF full flush, both with strong MaP scores, makes it one of the most water-efficient gravity-flush toilets certified by EPA WaterSense. For households with municipal water bills or drought-area surcharges, the Aquia IV's dual-flush design provides measurable annual savings that Kohler's standard single-flush lineup cannot match. Kohler's pressure-assist models and certain dual-flush designs get close, but TOTO holds the edge in this category.

How Do Kohler and TOTO Compare on Reliability and Owner Satisfaction?

Aggregated owner reviews across major retail platforms show both brands earning strong satisfaction ratings, with TOTO models scoring slightly higher on long-term cleanliness and fewer clog incidents. Kohler scores higher on ease of finding replacement parts, particularly in smaller US markets, and on availability of matching fixtures in the same style line. Both brands back their toilets with one-year limited warranties on mechanical parts, though TOTO offers a limited lifetime warranty on the toilet itself.

Reviewing owner feedback from several thousand verified purchases across major retailers reveals a consistent pattern. Kohler buyers cite installation straightforwardness, parts availability at local hardware stores, and the visual design range as primary strengths. Kohler's broader product line, which spans basic builder-grade models to designer styles, means the brand is available in more price points and at more retail locations, including big-box stores nationwide.

TOTO buyers consistently return to two themes: the bowl stays cleaner between cleanings and clogs are rare. The absence of clog complaints in TOTO reviews is statistically notable. The Drake II and UltraMax II generate very few clog complaints relative to their sales volume, which aligns with their 1,000-gram MaP scores and the Tornado Flush's ability to generate sustained hydraulic velocity through the trapway. When clogs do occur with TOTO toilets, owner reviews most often trace the cause to non-flushable items or extremely constricted drain lines rather than the toilet itself.

Kohler Warranty Snapshot

Kohler's standard residential toilet warranty covers defects in materials and workmanship for one year on mechanical components and the seat, and limited lifetime coverage on the vitreous china fixture itself (subject to normal use conditions). Replacement parts for current Kohler models are stocked at major home improvement retailers, which makes repairs faster and less expensive than sourcing from specialty plumbing suppliers. For older Kohler models, Kohler maintains a parts catalog that extends back several decades.

TOTO Warranty Snapshot

TOTO backs its residential toilets with a limited one-year warranty on mechanical parts and a limited lifetime warranty on the vitreous china. TOTO's CeFiONtect glaze is covered for five years under a separate finish warranty, which is unusual in the toilet category and reflects the company's confidence in the coating's durability. Replacement parts for TOTO toilets are generally available through TOTO's authorized dealer network and online specialty plumbing retailers, though they are less likely to be on a local hardware store shelf than Kohler parts.

For a deeper look at how warranties compare across all major brands, see our toilet warranty comparison guide.

Is TOTO Worth the Extra Cost Over Kohler?

TOTO is worth the premium for buyers who prioritize bowl cleanliness, maximum clog resistance, and long-term water savings, particularly in the mid-range and above. Kohler is the better value for buyers on tight budgets, those managing rental properties where part availability matters, or those who want a broader selection of designer styles. The gap narrows at the Cimarron versus Drake II comparison, where both hit 1,000 grams on MaP and both carry WaterSense certification.

Breaking this down by buyer profile is the most honest way to answer the question.

Buy Kohler if: You are outfitting a rental property and need fast, cheap repairs when parts fail. You want a toilet that matches a broader ecosystem of Kohler faucets, sinks, and tubs in a single style line. Your budget is limited and you still want a 1,000-gram MaP score, which the Cimarron delivers reliably. You prefer purchasing from a local big-box store with immediate availability.

Buy TOTO if: Cleaning the toilet less often matters to you and CeFiONtect glaze is a genuine quality-of-life improvement. You want the absolute lowest clog risk for a household with multiple daily users. You are spending in the upper mid-range or higher and want demonstrable technology improvement per dollar. You are replacing an older toilet in a hard-water area where mineral buildup is a recurring problem, since CeFiONtect resists mineral adhesion better than standard china.

At the entry level, the Kohler Wellworth and the TOTO Entrada are broadly comparable in flush performance and water efficiency. The Wellworth often leads on price. Neither includes the premium technologies that define the mid-range and above from each brand. If budget is the primary driver, the Wellworth is a responsible choice. If you can move up even one tier, the jump from entry to mid-range on the TOTO side unlocks the Tornado Flush and CeFiONtect, which represent a more meaningful upgrade than moving from Kohler's Wellworth to the Highline.

Expert Take

The Kohler Cimarron versus TOTO Drake II matchup is the most useful direct comparison in this category. Both are two-piece, elongated comfort-height toilets. Both score 1,000 grams on MaP at 1.28 GPF. Both carry WaterSense certification. The Cimarron uses AquaPiston and a 3-inch fully glazed trapway; the Drake II uses Tornado Flush and CeFiONtect glaze. In aggregated owner reviews, Drake II buyers report fewer cleaning complaints. Cimarron buyers report easier local parts sourcing. The price difference between them is modest enough that the decision generally comes down to whether CeFiONtect's long-term cleaning benefit justifies the gap for your household. For most multi-person households, it does.

How Kohler and TOTO Stack Up Against Other Brands

American Standard's Champion 4 enters this conversation because its 4-inch flush valve and fully glazed 2-3/8 inch trapway generate some of the most aggressive gravity-flush hydraulics on the market. It earns 1,000 grams on MaP. Its price point competes directly with the Kohler Cimarron. Buyers who prioritize raw bulk-waste removal over bowl cleanliness between flushes often choose the Champion 4 over either Kohler or TOTO mid-range options. See our American Standard Champion 4 review for that comparison in full.

Woodbridge's T-0001 is a one-piece skirted toilet that competes on design and value. Its dual-flush system (1.28 / 0.8 GPF) and MaP scores that approach 1,000 grams make it a credible alternative to the Kohler Cimarron and a more affordable substitute for the TOTO UltraMax II's skirted aesthetic. Swiss Madison and Gerber also produce credible options at the budget and mid-range levels, though neither has assembled the technology stack that defines TOTO's upper-mid lineup.

Feature Kohler Cimarron TOTO Drake II American Standard Champion 4 Woodbridge T-0001
Flush System AquaPiston Canister Tornado Flush 4-inch Flush Valve Dual-Flush Siphon
MaP Score 1,000 g 1,000 g 1,000 g 800 g
GPF 1.28 1.28 1.6 1.28 / 0.8
WaterSense Yes Yes No (1.6 GPF) Yes
Bowl Glaze Standard Vitreous China CeFiONtect EverClean Surface Standard
Trapway Size 3-inch fully glazed 2-1/8 inch siphon jet 4-inch flush valve 2-inch
Piece Count Two-Piece Two-Piece Two-Piece One-Piece
Bowl Height Comfort (16.5 in) Comfort (16.5 in) Standard (15 in) Comfort (16.5 in)
China Warranty Limited Lifetime Limited Lifetime Limited Lifetime 1 Year

Kohler Model Deep Dive: Highline, Cimarron, Santa Rosa

The Highline is Kohler's most widely sold model and has been in production in various forms for decades. The Highline Arc edition at 1.28 GPF earns an 800-gram MaP score, which is solid but below the 1,000-gram ceiling. The Cimarron is the model to choose if you want Kohler's best flush performance at the mid-range; it uses the same AquaPiston valve as the Highline but with a wider, fully glazed 3-inch trapway that lifts its MaP score to 1,000 grams. The Santa Rosa is Kohler's most popular one-piece elongated comfort-height model; its compact footprint is a genuine advantage in smaller bathrooms, and it also scores 1,000 grams on MaP at 1.28 GPF.

For buyers who want a Kohler one-piece that competes visually with the TOTO UltraMax II, the Santa Rosa is the relevant comparison. The UltraMax II wins on bowl cleanliness (CeFiONtect versus standard glaze) and Tornado Flush coverage, but the Santa Rosa's slightly lower price and wider US availability make it a defensible choice for buyers who are not willing to pay the TOTO premium.

TOTO Model Deep Dive: Drake, Drake II, UltraMax II, Aquia IV

The original TOTO Drake (MS776) is a 1.6 GPF model that still appears on many installer-recommended lists because of its proven reliability over decades. Its 1.28 GPF counterpart, the Eco Drake, carries WaterSense certification and a 1,000-gram MaP score. The Drake II (MS454) upgrades the bowl design and adds CeFiONtect glaze while maintaining the same MaP score and WaterSense certification. Most buyers choosing between the Drake and Drake II should default to the Drake II; the price difference is modest and the glaze improvement is real.

The UltraMax II (MS604114) is a one-piece version of the Drake II. Same Tornado Flush, same CeFiONtect, same 1,000-gram MaP score, now in a single seamless bowl-tank configuration that eliminates the crevice between the tank and bowl that collects grime. It is heavier to install solo and tends to run higher than the Drake II, but its long-term ease of cleaning justifies the premium for most buyers who request it. For more detail see our TOTO UltraMax II review.

The Aquia IV is TOTO's dual-flush flagship in the residential gravity-flush segment. Its 1.28 GPF full flush and 0.8 GPF partial flush both deliver meaningful MaP performance. TOTO uses a universal height bowl on the Aquia IV that sits at 17.25 inches, and the SanaGloss (CeFiONtect) coating is standard. For households with two or more occupants and a water bill that reflects usage, the Aquia IV's dual-flush math produces real annual savings that help offset its higher entry point.

Installation and Long-Term Ownership Costs

Installation cost is largely the same for both brands at equivalent piece counts. A two-piece toilet from either Kohler or TOTO installs in 45 to 90 minutes for an experienced plumber. One-piece models are slightly more labor-intensive due to weight. The meaningful long-term cost difference comes from replacement parts. Kohler fill valves, flappers, and canister kits are stocked at Home Depot and Lowe's nationally, with generic-compatible parts also available. TOTO-specific parts, including fill valves calibrated for their flush volumes, are less commonly stocked locally and may require ordering from TOTO's dealer network or an online plumbing supplier. For a landlord managing ten units, Kohler's parts accessibility is a genuine operational advantage. For a homeowner with a single well-maintained bathroom, the parts gap matters much less.

Frequently Asked Questions

Is TOTO really better than Kohler?

Better depends on what you value. TOTO consistently outperforms Kohler on bowl cleanliness, clog resistance in aggregated owner data, and water savings at the dual-flush level. Kohler outperforms TOTO on US parts availability, design variety, and entry-level pricing. At the mid-range, TOTO's technology advantage is real. At the entry level, the brands are much closer.

What is MaP testing and why does it matter for this comparison?

Maximum Performance (MaP) testing, conducted by an independent laboratory and published at map-testing.com, measures how many grams of simulated bulk waste a toilet can flush in a single cycle. A score of 1,000 grams means the toilet cleared the maximum test load. Both the Kohler Cimarron and TOTO Drake II achieve 1,000 grams, confirming equivalent raw flushing power despite using different flush technologies.

What does EPA WaterSense certified mean for these toilets?

EPA WaterSense certification requires a toilet to use 1.28 GPF or less and pass minimum MaP performance standards. Most current Kohler and TOTO mid-range models meet this certification. Choosing a WaterSense-certified model guarantees a minimum flush performance level, not just water savings, making the label a useful quality filter in addition to an efficiency marker.

Which Kohler toilet has the highest MaP score?

Multiple Kohler models score 1,000 grams on MaP, including the Cimarron (1.28 GPF), Santa Rosa (1.28 GPF), and several other models in their current lineup. The key is selecting a 1.28 GPF Kohler model with AquaPiston technology rather than an older 1.6 GPF design, which often scores lower due to slower water velocity through the trapway.

What is CeFiONtect and is it worth paying for?

CeFiONtect is TOTO's proprietary ionic glaze that creates a microscopically smoother surface than standard vitreous china. The smoother surface reduces the adhesion of waste, mineral deposits, and bacteria. Owner reviews consistently note that TOTO toilets with CeFiONtect require less frequent scrubbing than comparable toilets without it. For households where bathroom cleaning frequency matters, the glaze is worth the premium.

How does Kohler's AquaPiston differ from TOTO's Tornado Flush?

AquaPiston is a canister valve that opens 360 degrees to deliver a strong initial rush of water into the bowl. Tornado Flush uses two directional rim jets to create a sustained cyclonic water flow that covers the entire bowl surface before concentrating at the trapway. AquaPiston excels at immediate bulk-waste removal force; Tornado Flush excels at bowl surface coverage and sustained rinse, which is why TOTO bowls tend to look cleaner between scrubbing sessions.

Which toilet is better for a rental property, Kohler or TOTO?

Kohler is generally the better choice for rental properties. Kohler parts are available at big-box retailers nationwide, meaning a property manager can replace a fill valve or canister seat on the same day without waiting for specialty parts to ship. Kohler's broader price range also means more options at the entry and mid level that meet performance requirements without overinvesting in premium technology for a rental unit.

What is the TOTO Drake II's GPF and MaP score?

The TOTO Drake II (model MS454124CEFG) uses 1.28 GPF and scores 1,000 grams on the MaP flush test. It carries EPA WaterSense certification. The model uses Tornado Flush technology and CeFiONtect glaze, making it one of the most capable standard two-piece toilets in the category at its price point.

Is the TOTO Aquia IV worth the premium over the TOTO Drake II?

The Aquia IV adds a 0.8 GPF partial flush and a one-piece design option over the two-piece Drake II. If your household flushes primarily liquid waste most of the time, the Aquia IV's lower half-flush volume will produce meaningful water bill savings over months and years. The Drake II is the better value for households where full flushes are more common or where budget is a primary concern.

Does TOTO make toilets in the United States?

TOTO manufactures many of its US-market toilets at a facility in Morrow, Georgia. The Drake, Drake II, UltraMax II, and several other core models are produced domestically. TOTO's smart toilet and luxury Neorest models are manufactured in Japan. The US production base helps with supply chain consistency for the mid-range and entry lineup.

How does the Kohler Cimarron compare to the TOTO Drake II directly?

Both are two-piece elongated comfort-height 1.28 GPF WaterSense-certified toilets scoring 1,000 grams on MaP. The Cimarron uses AquaPiston and a 3-inch glazed trapway; the Drake II uses Tornado Flush and CeFiONtect glaze. In practice they flush equivalently on raw waste removal but the Drake II's glaze reduces cleaning frequency. Kohler's parts are more accessible locally. The Drake II typically costs more but offers more cleaning convenience per dollar over a long ownership period.

What is the difference between Kohler comfort height and standard height?

Kohler comfort height models measure approximately 16.5 to 17 inches from the floor to the rim, which aligns with standard chair height and eases sitting and standing, particularly for taller adults and users with mobility considerations. Standard height toilets measure around 14 to 15 inches. Most current Kohler Cimarron, Santa Rosa, and Highline models are available in both heights; the comfort height version usually appears in the model name or specification sheet as "C" or "Comfort Height."

Can I use Kohler seats on TOTO toilets or vice versa?

Brand-crossing seat compatibility is unreliable. Toilet seat compatibility depends on bowl shape (round or elongated) and bowl dimensions, which vary between manufacturers even within the same described shape. TOTO bowls tend to run slightly larger in their elongated dimension than some Kohler bowls. Stick with manufacturer-matched seats or verify specific dimensions in the toilet's technical specification sheet before purchasing a third-party seat.

Which brand has fewer clog complaints from real owners?

TOTO models, particularly the Drake II and UltraMax II, generate fewer clog complaints in aggregated owner reviews relative to their sales volume than comparable Kohler models. This aligns with their 1,000-gram MaP scores and the Tornado Flush's sustained hydraulic output. American Standard's Champion 4 also generates very few clog complaints due to its large flush valve diameter, providing another strong alternative for clog-sensitive households.

Does Kohler offer a pressure-assist toilet?

Kohler offers pressure-assist options in certain commercial and residential models, though the company's residential lineup is primarily gravity-flush with the AquaPiston canister. Pressure-assist toilets use compressed air in the tank to increase flush force, which can be beneficial in low-water-pressure homes. If clog resistance in a low-pressure environment is the primary concern, a pressure-assist model from Kohler or another brand may outperform both standard Kohler and TOTO gravity models.

What toilet brand do plumbers recommend most?

Plumber recommendations vary by region and installer experience, but TOTO and Kohler both appear frequently in professional endorsements for residential installs. TOTO earns consistent recommendation from plumbers in markets where it is widely stocked because of its low callback rate due to clogs or flush failures. Kohler receives strong recommendation for rental and commercial applications where parts availability and speed of repair are prioritized. American Standard's Champion 4 also receives frequent mention from plumbers for clog resistance.

What GPF should I choose for a family household?

For a family household with regular solid waste flushing, a 1.28 GPF WaterSense-certified toilet with a 1,000-gram MaP score covers both efficiency and clog resistance. Dual-flush models at 1.28 / 0.8 GPF are the most water-efficient option if household members will consistently use the partial flush for liquid waste, which is a reasonable assumption for adults but less consistent with children. Both Kohler and TOTO offer strong 1.28 GPF options that handle family loads without issue.

How long do Kohler and TOTO toilets last?

The vitreous china bowl and tank on both Kohler and TOTO toilets can last 50 years or more under normal residential conditions. The parts that wear and need replacement are mechanical: fill valves, flush valves, and seals typically last 5 to 15 years depending on water quality and usage frequency. Both brands sell replacement part kits. The toilet itself rarely requires full replacement due to normal wear; most replacements are driven by style preference, remodeling, or an upgrade to better water efficiency.

Is the Woodbridge T-0001 a real competitor to TOTO and Kohler?

The Woodbridge T-0001 competes on price and design, offering a one-piece skirted look at a lower price point than the TOTO UltraMax II and most Kohler one-piece comfort-height models. Its dual-flush system and MaP score are competitive. Where Woodbridge falls short is in long-term owner satisfaction data (smaller review base, shorter track record) and in specialty glaze technology comparable to CeFiONtect. It is a legitimate option for buyers who want the aesthetic of a one-piece without the premium price, but it does not match the long-term cleanliness data that TOTO accumulates.

Where can I verify a toilet's WaterSense certification and MaP score?

EPA WaterSense certification can be verified through the product search tool at epa.gov/watersense. MaP flush-test scores are published by the independent testing program at map-testing.com, where you can search by brand and model number for current scores. Both databases are regularly updated and are the authoritative sources for performance and efficiency claims, more reliable than any brand's own marketing materials.

Sources

  • EPA WaterSense, epa.gov/watersense
  • MaP flush testing, map-testing.com
  • Manufacturer published specifications
  • TOTO USA product documentation, totousa.com
  • Kohler Co. product specifications, kohler.com
  • Aggregated owner reviews, major US retail platforms

Our Verdict

TOTO earns the overall value edge at the mid-range and above: Tornado Flush plus CeFiONtect glaze produces measurably cleaner bowls and fewer clogs over years of daily use, and the Drake II at 1,000 grams on MaP at 1.28 GPF is as capable as any gravity-flush toilet in its class. Kohler wins on entry-level pricing, US parts accessibility, and design range. Choose Kohler Cimarron for budget-conscious buyers who still want 1,000-gram flush performance. Choose TOTO Drake II or UltraMax II for anyone who wants the lowest long-term cleaning burden. Both choices beat the typical builder-grade toilet by a wide margin.

How we rank & our data sources

We do not run physical lab tests. Rankings are built from published, verifiable data and real owner feedback, never paid placement.

Researched by Marcus Bell · Last updated May 12, 2026 · Our review method

M
Researched by Marcus Bell

Marcus compiles bathroom-fixture data, MaP flush scores, GPF ratings, trapway and flush-valve specs, and weighs them against thousands of verified owner reviews to build our rankings. He does not run physical lab tests; every verdict is sourced from published specifications, certifications (MaP, EPA WaterSense) and real owner feedback.

Updated May 2026 · Brands
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