The best low flow toilets cut water bills fast by using smart flushing, not weak flushing. You get powerful performance while saving gallons every day.
Top picks include Niagara’s Tank Bank for an easy tank insert, compact DeerValley and other dual flush one piece models for small baths, and WaterSense options like American Standard Cadet 3.
Comfort height and elongated bowls make daily use easier, while skirted bases and glazed trapways cut cleaning time, and the next sections walk through each option in simple detail.
| Niagara Conservation Water Saving Toilet Tank Bank |
| Easiest Retrofit Saver | Flush Type: Single-displacement (reduces tank volume) | Max Gallons Per Flush: Reduces existing tank by up to 0.8 gallons per flush | Bowl Shape: N/A (retrofit tank bank only) | VIEW LATEST PRICE | Read Our Analysis |
| DeerValley Compact One-Piece Dual Flush Toilet |
| Best for Small Spaces | Flush Type: Dual flush (1.1/1.6 GPF) | Max Gallons Per Flush: 1.6 GPF | Bowl Shape: Round bowl | VIEW LATEST PRICE | Read Our Analysis |
| American Standard Cadet 3 FloWise 1.28 GPF Tank |
| Best Replacement Tank | Flush Type: Single flush (1.28 GPF) | Max Gallons Per Flush: 1.28 GPF | Bowl Shape: Depends on compatible concealed-trap bowl (Cadet 3) | VIEW LATEST PRICE | Read Our Analysis |
| SouNor Modern White Elongated Dual Flush Toilet |
| Tall Comfort Pick | Flush Type: Dual flush (1.1/1.6 GPF) | Max Gallons Per Flush: 1.6 GPF | Bowl Shape: Elongated bowl | VIEW LATEST PRICE | Read Our Analysis |
| Casta Diva Elongated One-Piece ADA Comfort Toilet |
| ADA Comfort Choice | Flush Type: Dual flush (1.1/1.6 GPF) | Max Gallons Per Flush: 1.6 GPF | Bowl Shape: Elongated bowl | VIEW LATEST PRICE | Read Our Analysis |
| Swiss Madison Hugo Touchless Dual-Flush Smart Toilet |
| Best Touchless Flush | Flush Type: Dual flush (1.1/1.6 GPF equivalent) | Max Gallons Per Flush: 1.6 GPF | Bowl Shape: Elongated bowl | VIEW LATEST PRICE | Read Our Analysis |
| Glendan Smart Tankless Bidet Toilet with Remote |
| Smartest Tankless Option | Flush Type: Dual flush (full/eco) | Max Gallons Per Flush: Full flush (not specified, low-flow) | Bowl Shape: Elongated-style compact one-piece (not explicitly stated but implied) | VIEW LATEST PRICE | Read Our Analysis |
| TOTO Drake Elongated 1.6 GPF Toilet Cotton White |
| Powerful Single-Flush | Flush Type: Single flush (1.6 GPF) | Max Gallons Per Flush: 1.6 GPF | Bowl Shape: Elongated bowl | VIEW LATEST PRICE | Read Our Analysis |
| Compact Dual-Flush One-Piece Toilet for Small Bathrooms |
| Ultra-Compact Toilet | Flush Type: Dual flush (0.8/1.6 GPF) | Max Gallons Per Flush: 1.6 GPF | Bowl Shape: Compact elongated/short-depth bowl | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
Niagara Conservation Water Saving Toilet Tank Bank
Should you be residing with an older toilet that still works fine but wastes a lot of water, the Niagara Conservation Water Saving Toilet Tank Bank can feel like a small miracle for your bathroom. You don’t replace your toilet. You simply help it waste less. That feels smart and kind to your budget.
You just fill the bag to the top, snap it closed, and hang it inside the tank. Each flush then saves up to 0.8 gallons. The non corrosive material protects your tank, while the snap lock design stops evaporation, so you don’t refill or deal with mess.
- Flush Type:Single-displacement (reduces tank volume)
- Max Gallons Per Flush:Reduces existing tank by up to 0.8 gallons per flush
- Bowl Shape:N/A (retrofit tank bank only)
- Rough-In Size:Uses existing toilet’s rough-in (no change)
- Seat Included:Uses existing seat (no seat)
- Special Features:Anti-evaporation snap-lock water bag for older toilets
- Additional Feature:Up to 0.8 gal saved
- Additional Feature:Anti-evaporation snap-lock seal
- Additional Feature:Non-corrosive durable construction
DeerValley Compact One-Piece Dual Flush Toilet
Should you be working with a small bathroom and still want a strong, water-saving flush, the DeerValley Compact One-Piece Dual Flush Toilet fits that need beautifully. At only about 24½ inches long and 13⅜ inches wide, it fits into tight spaces without feeling cramped. The round bowl and smart height give you comfortable seating, even provided that you’re close to the 250 pound limit.
You also cut water use with its 1.1 or 1.6 gallon dual flush. That’s powerful, quiet, and can save up to 16,500 gallons a year. The skirted base, soft-close 28 dB seat, and side-access panels make cleaning, repairs, and daily use easier and calmer.
- Flush Type:Dual flush (1.1/1.6 GPF)
- Max Gallons Per Flush:1.6 GPF
- Bowl Shape:Round bowl
- Rough-In Size:12-inch rough-in
- Seat Included:Soft-close polypropylene seat included
- Special Features:Fully skirted design, side-access panels, quiet flush
- Additional Feature:Ultra-compact 24.5″ length
- Additional Feature:Side-access plumbing panels
- Additional Feature:28dB ultra-quiet seat
American Standard Cadet 3 FloWise 1.28 GPF Tank
During the period you’re trying to cut water use without giving up a strong, reliable flush, the American Standard Cadet 3 FloWise 1.28 GPF Tank steps in as a smart, practical upgrade. It uses just 1.28 gallons per flush, so you save about 20 percent more water than older standard toilets while still clearing the bowl well.
You get an oversized 3 inch flush valve, which lets water move quickly and powerfully. The EverClean surface helps block stains and odors, so your tank stays fresher longer. Just be sure your bowl is model 3075000.020 or 3053000.020 and read the instructions before installing.
- Flush Type:Single flush (1.28 GPF)
- Max Gallons Per Flush:1.28 GPF
- Bowl Shape:Depends on compatible concealed-trap bowl (Cadet 3)
- Rough-In Size:12-inch rough-in
- Seat Included:Tank only (no seat)
- Special Features:EverClean surface, oversized 3″ flush valve
- Additional Feature:EverClean anti-stain surface
- Additional Feature:Oversized 3-inch valve
- Additional Feature:20% water reduction
SouNor Modern White Elongated Dual Flush Toilet
Busy families and anyone who’s tired of wasting water will likely feel a real sense of relief with the SouNor Modern White Elongated Dual Flush Toilet, because it gives you strong, reliable flushing while still using low flow water. You get two flush choices, 1.1 gallons for liquids and 1.6 gallons for solids, so you cut water use without worrying about clogs.
You’ll also notice the style right away. The clean white body with a black button looks modern and sharp. The tall 17.3 inch elongated bowl feels easier on your knees and back, especially for seniors or anyone with mobility issues. The soft close, heavy-duty seat stays solid, quiet, and easy to clean.
- Flush Type:Dual flush (1.1/1.6 GPF)
- Max Gallons Per Flush:1.6 GPF
- Bowl Shape:Elongated bowl
- Rough-In Size:12-inch rough-in
- Seat Included:Heavy-duty soft-close UF seat included
- Special Features:Tall/ADA-intended height, splash-proof bowl, black accent button
- Additional Feature:High-contrast black button
- Additional Feature:Splash-proof bowl design
- Additional Feature:Intended ADA compliance
Casta Diva Elongated One-Piece ADA Comfort Toilet
Choosing the Casta Diva Elongated One-Piece ADA Comfort Toilet makes sense should you want a bathroom that feels modern, stays cleaner longer, and still saves water with every flush. You get a sleek one-piece skirted design that hides curves and gaps, so dust and grime have fewer places to stick. The fully glazed trapway also helps waste move smoothly and reduces leak risks.
You’ll feel the comfort every day. The 17 inch chair height is easier on your knees, and the elongated seat gives you more support. The soft close, quick release seat keeps things quiet and simple to clean.
- Flush Type:Dual flush (1.1/1.6 GPF)
- Max Gallons Per Flush:1.6 GPF
- Bowl Shape:Elongated bowl
- Rough-In Size:12-inch rough-in
- Seat Included:Soft-close quick-release seat included
- Special Features:EPA WaterSense, MAP 1000g performance, skirted one-piece
- Additional Feature:1000g MAP flush rating
- Additional Feature:EPA WaterSense certified
- Additional Feature:Lifetime tech support
Swiss Madison Hugo Touchless Dual-Flush Smart Toilet
Should you want a toilet that saves water, stays clean, and doesn’t need wires or constant touching, the Swiss Madison Hugo Touchless Dual-Flush Smart Toilet fits your life really well. You get strong performance with the Dual Vortex Flush, which spins water in a cyclonic motion to scrub the bowl and clear waste quickly. You can choose 1.1 gallons for light flushes or 1.6 gallons whenever you need more power.
Because it’s tankless and battery powered, you skip electrical work and save space. The elongated, comfort-height bowl feels easier on your knees. Touchless, foot, wall sensor, and side button flush options keep every visit simple and more hygienic.
- Flush Type:Dual flush (1.1/1.6 GPF equivalent)
- Max Gallons Per Flush:1.6 GPF
- Bowl Shape:Elongated bowl
- Rough-In Size:Standard 12-inch rough-in (tankless, floor-mounted)
- Seat Included:Seat integrated with toilet (comfort height)
- Special Features:Touchless multiple flush methods, tankless, battery-operated
- Additional Feature:Dual Vortex cyclonic rinse
- Additional Feature:Multiple touchless activations
- Additional Feature:Battery-powered tankless design
Glendan Smart Tankless Bidet Toilet with Remote
Should you want a low flow toilet that quietly takes care of comfort, cleanliness, and water savings for the whole family, the Glendan Smart Tankless Bidet Toilet with Remote fits that need beautifully. You get dual flush options, so you can choose a full flush or an eco half flush and cut water use without hesitation. The off seat auto flush helps prevent forgotten flushes, while wall hydration cleaning keeps the bowl fresh.
You’ll also appreciate the heated seat, soft night light, and soft close lid. During power outages, you can still use the side knob flush, so your bathroom stays reliable.
- Flush Type:Dual flush (full/eco)
- Max Gallons Per Flush:Full flush (not specified, low-flow)
- Bowl Shape:Elongated-style compact one-piece (not explicitly stated but implied)
- Rough-In Size:Standard 12-inch rough-in (tankless, floor-mounted)
- Seat Included:Heated soft-close seat included
- Special Features:Auto off-seat flush, heated seat, night light, wireless remote
- Additional Feature:Off-seat auto flush
- Additional Feature:Heated seat with remote
- Additional Feature:Built-in night light
TOTO Drake Elongated 1.6 GPF Toilet Cotton White
For many homeowners who want powerful flushing without wasting water, the TOTO Drake Elongated 1.6 GPF in Cotton White feels like a calm, practical solution. You get strong performance without drama. The TORNADO FLUSH sends water in a fast circular motion, so the bowl gets rinsed clean instead of lightly splashed. The wide 3 inch flush valve and siphon jet work together to clear waste in one reliable flush.
You also spend less time scrubbing. The CEFIONTECT glaze makes it hard for waste to stick. The elongated bowl feels roomy, fits a standard 12 inch rough in, and you can pair it with a SoftClose seat or WASHLET bidet.
- Flush Type:Single flush (1.6 GPF)
- Max Gallons Per Flush:1.6 GPF
- Bowl Shape:Elongated bowl
- Rough-In Size:12-inch rough-in
- Seat Included:Seat not included (compatible with SoftClose/WASHLET)
- Special Features:TORNADO FLUSH and CEFIONTECT easy-clean glaze
- Additional Feature:TORNADO FLUSH technology
- Additional Feature:CEFIONTECT ultra-smooth glaze
- Additional Feature:Washlet-ready compatibility
Compact Dual-Flush One-Piece Toilet for Small Bathrooms
Residing with a small bathroom can feel frustrating, so a compact dual-flush one-piece toilet becomes a smart, calming solution instead of just another fixture. With a short 23 inch depth, it frees up precious floor space, so the room feels open instead of cramped. You still get a comfortable seat that fits most body types, so you don’t feel squeezed in.
The dual flush gives you 0.8 gallons per flush for liquids and 1.6 for solids, so you cut water use without worrying about clogs. Double cyclone flushing, a large glazed trapway, and a fully skirted, self-cleaning design keep the bowl cleaner, quieter, and easier to live with every day.
- Flush Type:Dual flush (0.8/1.6 GPF)
- Max Gallons Per Flush:1.6 GPF
- Bowl Shape:Compact elongated/short-depth bowl
- Rough-In Size:Standard 12-inch rough-in
- Seat Included:Soft-close seat included
- Special Features:23″ short depth, double cyclone flush, ultra-quiet operation
- Additional Feature:Extra-short 23″ depth
- Additional Feature:Double cyclone flushing
- Additional Feature:Self-cleaning surface materials
Factors to Consider When Choosing Low Flow Water Saving Toilets
Whenever someone opts for a low flow water saving toilet, it helps to look past the style and really consider how it will work in daily life. Flush performance and power, water used per flush, bowl shape and size, and comfort height all affect how easy and comfortable the toilet feels for every person in the home. Cleaning and maintenance needs also matter, because the right design can save time, reduce stress, and keep the bathroom feeling fresh with less effort.
Flush Performance and Power
Although low flow toilets use less water, flush performance and power still matter just as much as they do with older, high-volume models. Whenever someone presses the handle, they want everything gone in one clean flush, without noise, drama, or surprises.
To achieve that, many low flow models rely on smart engineering. Siphon jets or vortex flushing help pull waste out strongly, even with less water. A larger flush valve, often 3 inches or more, lets water rush into the bowl faster, which enhances force.
Next, the trapway design quietly supports that power. A wider, fully glazed trapway helps waste move smoothly and reduces clogs. Advanced systems also try to stay quiet, so a strong flush does not sound like a small hurricane.
Water Usage per Flush
How much water a toilet uses with each flush can quietly shape daily life, monthly bills, and even a person’s peace of mind about the environment. At the time someone looks at low flow options, the key number is gallons per flush. Modern low flow toilets usually use about 0.8 to 1.6 GPF, while many old toilets use 3.5 GPF or more, often without better results.
Dual flush models go a step further. They give a light flush for liquid waste, like 0.8 or 1.1 GPF, and a stronger 1.6 GPF flush for solids. WaterSense-certified toilets stay at or below 1.28 GPF, yet still clear the bowl well, often with larger flush valves or dual nozzles that keep cleaning power strong.
Bowl Shape and Size
Every flush uses a set amount of water, but the shape and size of the bowl decide what that water actually does. Whenever someone chooses between round and elongated bowls, they are really choosing how that water moves, clears waste, and avoids splashing.
Round bowls stay shorter and a bit narrower, so they fit better in small bathrooms or tight corners. They help whenever floor space already feels cramped.
Elongated bowls stretch a little farther, but they often guide water more smoothly. This shape can clear the bowl faster and reduce clogs, which matters with low flow toilets. Many people also find elongated designs easier for everyday use.
Fully skirted bowls add another benefit, since smooth sides make wiping and deep cleaning far less frustrating.
Comfort Height and Access
Sometimes the simple act of sitting down and standing up from a toilet can feel like a major challenge, and that is where comfort height toilets become essential. These models usually sit 17 to 19 inches from floor to seat, compared with about 15 inches for standard toilets. That extra height can feel like the difference between lowering into a chair and sinking into a deep couch.
This design reduces strain on knees and hips, which helps seniors, people with disabilities, and anyone coping with pain or stiffness. It also improves bathroom safety through making transfers on and off the seat more stable, which lowers the chance of falls. Many comfort height toilets include elongated bowls, giving more seating space and better support, as long as the rough-in dimensions match the bathroom.
Cleaning and Maintenance Needs
Even a stylish, water saving toilet can become a daily frustration should it be hard to keep clean or repair once something goes wrong. So, it helps to look closely at cleaning and maintenance needs prior to you choose.
A fully skirted design removes awkward bends and tiny gaps, so a quick wipe keeps the base looking fresh. At the time the bowl surface has anti-stain and odor-fighting materials, it stays brighter longer and needs less scrubbing. Smooth, glazed trapways also matter, because they resist waste sticking to the sides and lower the chance of clogs.
For everyday care, a soft-close seat with a quick-release button lets someone remove it in seconds, clean underneath, then snap it back on. Side-access panels or removable parts make small repairs less stressful.
Installation and Compatibility Requirements
At the moment it comes to installing a low flow, water saving toilet, small details in the bathroom can make or break the whole experience. So it really helps whenever a homeowner knows what to look for before buying.
First, they quietly check the rough-in distance, usually 12 inches, from the wall to the floor bolts. In case that number is wrong, even the best toilet will not sit right on the drain. They also confirm the tank and bowl are designed to work together, since many brands use matched pairs.
Next, they review bolt hole positions, side holes, and needed hardware like wax rings, bolts, and valves. Then they decide whether a one-piece or two-piece design fits their space, cleaning style, and comfort.
