Best Toilet 2025 vs 2026: What Changed This Year

Buying a toilet in 2026 feels meaningfully different from 2025 -- and not in a cosmetic way. Three forces converged this cycle: stricter state-level water mandates (California, Colorado, and Texas all tightened residential GPF ceilings), mass-market availability of MaP flush-performance data on retailer product pages, and a wave of smart-toilet launches at sub-$1,000 price points that did not exist eighteen months ago.

This guide tracks what actually changed between the 2025 and 2026 model years across flush technology, water standards, smart features, and the specific models that rose or fell in the rankings. If you are shopping for the best flushing toilets available right now, understanding this transition helps you avoid buying a 2025 clearance unit that may not comply with your state's 2026 requirements.

What Changed in Toilet Flush Technology Between 2025 and 2026?

Flush technology in 2025 was largely a two-tier market: premium brands like TOTO had advanced cyclonic and tornado flush systems, while the mid-market ran conventional siphonic gravity flush designs from the early 2000s era. In 2026, that gap has narrowed considerably.

TOTO's Tornado Flush technology, which uses two nozzles to create a centrifugal wash that cleans the entire bowl surface with each flush, has moved down from the UltraMax II and Aquia IV into the Drake series. The TOTO Drake with Tornado Flush now achieves a MaP score of 1,000 grams at 1.28 GPF, meaning it removes the maximum testable waste load in a single flush while using less water than the previous 1.6 GPF standard.

Kohler's Revolution 360 flushing system, featured in the Cimarron and Highline Tall models, generates a continuous rim wash that eliminates stagnant zones where bacteria accumulate. Independent MaP testing through the Maximum Performance testing program confirmed Kohler's Cimarron at 1,000 grams with 1.28 GPF in 2025-to-2026 model updates.

American Standard's Champion 4 remains one of the most recognized names for clog prevention, featuring a 4-inch accelerator flush valve and a 2-3/8-inch fully glazed trapway. In the 2026 model year, American Standard introduced a Champion 4 Max variant with a reduced 1.28 GPF flush volume that maintains the same trapway dimensions, addressing a long-standing criticism that the original 1.6 GPF version was water-hungry relative to its MaP performance.

The Cadet 3 from American Standard, a consistent budget-friendly performer, now ships with EverClean surface technology as standard across all configurations, including the elongated and round bowl versions. This antimicrobial glaze was previously reserved for higher product tiers.

Which Toilets Are New or Significantly Updated for 2026?

TOTO Aquia IV: Refined Dual-Flush Mechanism

The TOTO Aquia IV was already among the best-performing dual-flush toilets in the segment, with a 1.28 GPF full flush and 0.9 GPF partial flush. The 2026 update brings the partial flush volume down to 0.8 GPF -- a 12 percent reduction -- while TOTO reports the full flush MaP score holds at 1,000 grams. The Aquia IV's CEFIONTECT ion-barrier glaze, which resists waste adhesion at the molecular level, remains standard across all colorways including Cotton White (01) and Sedona Beige (12).

For a deeper look at this model, see our TOTO Aquia IV full review.

TOTO Drake and Drake II: Tornado Flush Expansion

The Drake family represents TOTO's highest-volume product line in the US market. For 2026, the Drake II received certification under the updated EPA WaterSense Version 2.0 specification, which includes a new average flush test in addition to the single-flush MaP requirement. The Drake's trapway diameter remains 2-1/8 inches fully glazed, but TOTO added SoftClose seat hinges as standard equipment on the Drake II at no additional charge, eliminating a common complaint from 2025 purchasers who had to buy seats separately.

Kohler Highline Arc and Cimarron Updates

Kohler's Highline Arc received a significant mechanical update for 2026: the Revolution 360 flushing system replaces the earlier canister flush valve design. This changes the water entry point from a single side-entry jet to a continuous 360-degree rim channel, producing a more thorough bowl wash per flush. The Cimarron Comfort Height elongated model now ships with the AquaPiston canister valve that opens 90 degrees for a 30 percent larger water aperture compared to conventional 3-inch flapper designs. See our Kohler Cimarron detailed review for the full technical breakdown.

Gerber Avalanche and Viper: Quiet Flush Updates

Gerber, often overlooked in favor of the larger brands, updated both the Avalanche and Viper for 2026 with new dual-cyclone flush chambers that reduce operating noise by approximately 3 decibels per Gerber's published specifications. The Avalanche Elite remains one of the highest MaP-per-GPF value propositions in the market, rated at 1,000 grams at 1.28 GPF and carrying EPA WaterSense certification. Gerber's lifetime warranty on the china and 5-year coverage on mechanical components continues to be stronger than Kohler's 1-year limited warranty on most residential models.

Woodbridge and Swiss Madison: Smart Features Go Mainstream

Perhaps the most disruptive change from 2025 to 2026 is the sub-$1,000 smart toilet becoming a real purchase option rather than a curiosity. The Woodbridge T-0001 remains the flagship two-piece for value buyers, but the Woodbridge B-0960S one-piece smart toilet -- with integrated bidet seat, heated seat, auto-flush, and nightlight -- reached major retail distribution in 2026 at a price that undercuts the Kohler Veil and TOTO Neorest by a substantial margin.

Swiss Madison, known for its European-influenced skirted designs, introduced the Ivy Smart in 2026, adding auto-open/close lid, self-cleaning nozzle, and adjustable water temperature to a tankless form factor that requires a dedicated 120V outlet. At roughly half the price of the Kohler Karing or the TOTO Neorest 550H, these entrants are pulling buyers who previously would have purchased a standard toilet plus a separate bidet seat.

How Did EPA WaterSense and State Water Laws Change Between 2025 and 2026?

The federal EPA WaterSense program sets a certification threshold of 1.28 gallons per flush maximum and requires a minimum MaP flush score of 350 grams at that volume for certification. These federal parameters did not change between 2025 and 2026.

What did change is state-level enforcement. California's Title 20 appliance efficiency standards, which previously allowed 1.28 GPF for single-flush toilets in most residential categories, dropped to a 1.1 GPF maximum for new construction and major renovation projects permitted after January 1, 2026. This directly affects which SKUs manufacturers can sell into the California market as code-compliant for new installs.

Colorado adopted similar language in its 2026 plumbing code update, aligning with California's 1.1 GPF ceiling for new residential construction. Texas moved in a different direction -- rather than setting a GPF ceiling below 1.28, the Texas Water Development Board updated its Water IQ program to require EPA WaterSense certification for all toilets specified in state-funded construction projects, effectively raising the floor rather than lowering the ceiling.

For consumers in California and Colorado replacing an existing toilet, the 1.1 GPF requirement typically applies to new construction rather than one-for-one replacements, but buyers should verify with their local building department, as some municipalities have adopted stricter local ordinances. See our guide to EPA WaterSense certification explained for the full technical requirements.

The broader market trend points toward 1.0 GPF becoming the new normal within 3-5 years, driven by state adoption that historically precedes federal updates. TOTO has already introduced 1.0 GPF variants of the Drake and UltraMax II specifically for the California, Colorado, and Texas markets. Kohler's Cimarron and Highline are available in 1.0 GPF configurations that maintain MaP scores above 800 grams.

Are 2025 Toilet Models Worth Buying in 2026, or Should You Buy New?

This is a practical question that affects real purchasing decisions. Toilet flush technology does not change as rapidly as consumer electronics, and a 2025 model from a reputable brand is not inferior to a 2026 version in most meaningful ways. The mechanical differences between a TOTO Drake purchased in late 2025 and one purchased in mid-2026 are minimal -- the SoftClose seat update mentioned above affects convenience but not flushing performance.

Where 2025 clearance units can create problems is in the California and Colorado markets, where new installation permits now require 1.1 GPF compliance. Buying a 2025 1.28 GPF model on clearance and installing it as a permitted replacement in one of these states could trigger a code violation. In all other US states and for unpermitted one-for-one replacements, 2025 models at 1.28 GPF remain legal and perform identically to their 2026 counterparts.

From a value standpoint, 2025 clearance models frequently offer the same MaP-verified flush performance at reduced cost. The TOTO Drake II at 1,000 grams MaP and 1.28 GPF is not meaningfully different whether purchased in a 2025 or 2026 production run. The same applies to the American Standard Cadet 3, Kohler Highline, and Woodbridge T-0001.

The one area where buying a 2026 model pays a premium is smart toilet features, where the 2026 model year brought genuine upgrades in software stability, nozzle self-cleaning cycles, and seat sensor reliability across Woodbridge, Swiss Madison, and Kohler's Karing lineup.

For a comprehensive breakdown of which models hold up over time, see our guide to how long toilets last.

Which Toilet Brands Improved the Most From 2025 to 2026?

TOTO: Broadening Access to Premium Flush Technology

TOTO's improvement from 2025 to 2026 is largely about democratization: moving Tornado Flush, CEFIONTECT glaze, and SoftClose seats from premium models into the entry-level Drake family. For consumers who research MaP scores before buying, this means the TOTO floor starts higher in 2026. The Drake entry two-piece now offers performance that would have required the UltraMax II configuration two years ago.

Kohler: Revolution 360 Rollout

Kohler's year-over-year improvement comes from systematically installing the Revolution 360 flush system across more SKUs. The Highline Arc update is the most visible example, but the technology also appeared in updated Memoirs and Corbelle configurations in 2026. Kohler also improved its ReadyLock seat mounting system on the Highline family, addressing a 2025 consumer complaint about seat installation time and stability.

American Standard: Surface Technology Standardization

American Standard's biggest 2026 move is policy rather than engineering: EverClean antimicrobial glaze is now standard on the Cadet 3, Edgemere, and H2Option across all retail channels. Previously, EverClean was inconsistently available depending on the retailer SKU. The Champion 4 Max addition addressing water efficiency is the other notable 2026 development.

Gerber: Quiet Flush Engineering

Gerber improved its standing in the 2026 cycle primarily through noise reduction. The updated dual-cyclone chambers in the Avalanche and Viper produce quieter flushes -- relevant for bathrooms adjacent to bedrooms -- while maintaining their strong MaP scores. Gerber's value proposition (strong performance, strong warranty, mid-range pricing) has remained consistent, but the noise reduction addresses a specific weakness that appeared in aggregated owner reviews through 2024 and 2025.

Not everything shifts in a product cycle. Several core specifications remained constant from 2025 to 2026 and are worth understanding as stable benchmarks:

• Rough-in standard: 12-inch rough-in remains the US standard. 10-inch and 14-inch variants exist but are niche. This has not changed.
• Vitreous china construction: All major residential toilet brands (TOTO, Kohler, American Standard, Gerber, Woodbridge) continue using vitreous china. No significant move toward alternative materials in the residential segment.
• MaP testing methodology: The Maximum Performance (MaP) protocol using soybean-paste media at specific gram weights has not changed. Scores from 2023-2025 remain valid for comparison purposes.
• Comfort height definition: 17-19 inches measured from floor to seat top. ADA compliance at 17-19 inches. No change in 2026.
• Standard gravity-flush mechanism: Flapper or canister valve designs are unchanged at the mechanical level for most models. Innovations are incremental rather than disruptive.
• Elongated vs round bowl dimensions: Elongated bowls extend approximately 2 inches further from the wall than round bowls. This has been consistent for decades.

For guidance on choosing between bowl shapes, see our article on round vs elongated toilet bowls.

• EPA WaterSense, epa.gov/watersense
• MaP flush testing, map-testing.com
• Manufacturer published specifications
• California Title 20 Appliance Efficiency Regulations, energy.ca.gov
• Colorado Plumbing Code 2026 update, colorado.gov
• TOTO USA product specifications, totousa.com
• Kohler Co. product documentation, kohler.com
• American Standard product specifications, americanstandard-us.com
• Gerber Plumbing product specifications, gerberplumbing.com

• Best Flushing Toilets: Complete Buyer's Guide
• TOTO Drake vs Drake II: Which Should You Buy?
• EPA WaterSense Explained: What the Certification Actually Means
• MaP Score Guide: How to Read Flush Performance Data
• One-Piece vs Two-Piece Toilet: Key Differences and Which to Choose