Eco-Friendly Bathroom Upgrades That Actually Save Water
The bathroom upgrades that genuinely cut water use, from WaterSense toilets and showerheads to fixing silent leaks, plus an honest look at bidets and heated seats.
We may earn a commission when you buy through links on this page, at no extra cost to you. Learn more
The bathroom upgrades that save the most water are the unglamorous ones. Fix leaks first, then replace an old toilet with a WaterSense-labeled model and fit WaterSense faucets or aerators and showerheads. A bidet seat can reduce toilet paper use, but it’s a comfort upgrade with some environmental upside, not a water saver in itself.
This guide ranks the options by real impact, explains the federal and WaterSense numbers so you can read labels confidently, and shows how to estimate your own savings. All figures come from the EPA’s WaterSense program, and the sources are listed above.
Start here: find and fix leaks
Leaks are the cheapest water savings in any home, because you’re paying for water nobody uses. The EPA says household leaks can waste 180 gallons per week, and toilets are a common culprit. A worn flapper, the rubber seal at the bottom of the tank, can leak thousands of gallons a year without making a sound.
How to do a toilet dye test
- Remove the tank lid.
- Add a few drops of food coloring to the water in the tank.
- Don’t flush. Wait 10 minutes.
- Check the bowl. If colored water has appeared, the tank is leaking into the bowl, usually past the flapper.
- Flush afterward so the dye doesn’t stain the tank or bowl.
Flappers are inexpensive and usually easy to replace. Take the old one to the hardware store to match the size and style. If the toilet keeps running after a new flapper, the fill valve or flush valve may need attention. Call a plumber if you’re unsure.
Other leaks to check
- Dripping faucets. A worn cartridge or washer is usually the cause.
- Dripping showerheads. Plumber’s tape on the threads often fixes a leak at the connection.
- Supply lines and valves. Look for moisture under the sink and behind the toilet.
Low-flow toilets: the biggest single upgrade
Toilets are one of the largest indoor water users in most homes. The federal standard limits new toilets to 1.6 gallons per flush (gpf). The EPA’s WaterSense label goes further: labeled toilets use 1.28 gpf or less and must also meet performance criteria, so a low flow toilet with the label is designed to flush effectively, not just use less water.
Toilets installed before modern efficiency standards often use considerably more than today’s limit. If yours is old, replacing it can make a noticeable difference. You can often find the flush volume stamped inside the tank or behind the seat hinge.
| Fixture | Typical or standard flow | WaterSense maximum |
|---|---|---|
| Toilet | 1.6 gpf (federal maximum) | 1.28 gpf |
| Bathroom faucet | 2.2 gpm (standard flow) | 1.5 gpm |
| Showerhead | 2.5 gpm (standard flow) | 2.0 gpm |
Figures from the EPA WaterSense program. gpf = gallons per flush; gpm = gallons per minute.
Single-flush vs. dual-flush
A dual-flush toilet has two buttons: a reduced flush for liquid waste and a full flush for solids. It’s an effective way to save water in a household that uses the reduced flush consistently. Single-flush WaterSense models are simpler to use and still efficient. Both styles can earn the WaterSense label.
If you plan to add a bidet seat later, check the new toilet’s bowl shape and whether it’s a one-piece or two-piece design. Our round vs. elongated guide and the compatibility calculator help you avoid a mismatch.
Compare models on AmazonFaucet aerators and showerheads
Bathroom faucets and aerators
According to the EPA, WaterSense-labeled bathroom sink faucets and accessories use a maximum of 1.5 gpm, compared with a standard flow of 2.2 gpm. You don’t need a new faucet to get there. A WaterSense aerator screws onto the tip of most existing faucets and is one of the cheapest upgrades in this guide.
Showerheads
The EPA says WaterSense showerheads must use no more than 2.0 gpm, compared with 2.5 gpm for standard models, and must also meet spray-performance criteria. Because a shower uses hot water, a more efficient showerhead also reduces the energy your water heater uses. That makes it a double win.
Look for the WaterSense label rather than a vague “eco” or “low-flow” claim on the packaging.
Bidets and toilet paper: an honest look
Bidets are often marketed as eco-friendly, and the case is real but nuanced.
What a bidet changes
A bidet seat or attachment uses water to clean, so most households use less toilet paper. Making toilet paper takes trees, water and energy, and it’s shipped and packaged, so using less of it reduces that footprint. How much less depends on your household and habits. We won’t put a number on it.
What a bidet adds
A bidet does use some water for each wash, so it slightly increases water use in the bathroom itself. Electric seats also use electricity to heat water and the seat and to run the dryer. A non-electric attachment uses no electricity at all. Our bidet seat vs. attachment guide compares the two.
Choosing an eco friendly bidet toilet seat
- Tankless heating. Tankless seats heat water only when needed instead of keeping a reservoir warm. Both the Alpha JX2 and the Brondell Swash 1400 use tankless heating, according to their manufacturers.
- Low standby power. Alpha Bidet highlights a low stated standby draw for the JX2.
- Eco or energy-saving modes. Many seats can lower the seat temperature on a schedule or when the bathroom isn’t in use.
- Adjustable settings. Shorter washes and lower seat heat reduce both water and energy use.
Alpha JX2
JX2-EW (elongated) / JX2-RW (round)
A tankless bidet seat with a heated seat, warm-air dryer and backlit remote, notable for its low stated standby power draw.
- Tankless water heating
- Rear, rear-plus and front wash with oscillation
- Heated seat (89–100°F stated range)
- Warm-air dryer
- Backlit wireless remote with 2 user presets
Check first: Some variants showed as sold out when checked — confirm availability.
Researched, not hands-on tested Specs checked against the manufacturer’s page, November 2026.
Heated seats and energy use
A heated seat on its own uses electricity whenever it’s on. You can keep that in check by:
- Using eco, timer or energy-saving modes if your seat has them.
- Lowering the seat temperature, especially in warmer months.
- Turning the seat heat off when you’re away for several days.
Our heated toilet seats buying guide covers what to look for. Keeping the seat clean and following the manufacturer’s care instructions also helps it run as intended.
Lower-impact toilet paper
Even with a bidet, you’ll probably still use some paper for drying. Bamboo toilet paper and recycled-content paper are two common lower-impact choices. Bamboo grows quickly, and recycled paper reuses existing fiber. Environmental claims vary by brand, so look for credible third-party certifications on the packaging rather than marketing language alone. If you have a septic system or older plumbing, check that the paper is labeled septic-safe.
See options on AmazonUpgrade priority checklist
Work through this list in order. The early items cost the least and often save the most.
- Run a dye test on every toilet and replace worn flappers.
- Fix dripping faucets and showerheads.
- Install WaterSense aerators on bathroom faucets.
- Swap in a WaterSense showerhead.
- Replace older toilets with WaterSense models (single or dual flush).
- Consider a bidet to reduce paper use, choosing tankless heating and eco modes for an electric seat.
- Switch to lower-impact toilet paper for whatever paper you still use.
Small habits that add up
Fixtures do most of the work, but daily habits matter too. None of these cost anything.
- Turn off the tap while brushing or shaving. A running faucet uses water the whole time it’s open.
- Shorten showers. Even a few minutes less saves water and the energy used to heat it.
- Don’t use the toilet as a trash can. Tissues, wipes and cotton swabs waste a flush and can cause clogs. Most wipes labeled “flushable” are still hard on plumbing.
- Keep an eye on the water bill. A sudden jump with no change in habits is often the first sign of a hidden leak.
- Re-check toilets once or twice a year. Flappers wear out gradually, so a toilet that passed the dye test last year may not pass it now.
How to estimate your savings
Your actual savings depend on how many people live in your home, how often they flush and shower, and what fixtures you’re replacing. Rather than trusting a generic figure, plug in your own numbers. Our water estimator compares your current fixtures with WaterSense alternatives and estimates the difference for your household.
To get the most accurate result, check the flush volume stamped on your toilet and the flow rate printed on your showerhead or aerator before you start. Your water bill also shows your usage, so you can compare before and after an upgrade.
Frequently asked questions
Does a bidet save water?
A bidet uses some water for each wash, so it slightly adds to bathroom water use. Its environmental benefit comes from using less toilet paper, which takes resources to make and ship. The overall trade-off depends on your habits and the type of bidet.
What does the WaterSense label mean for toilets?
It means the toilet uses 1.28 gallons per flush or less, below the 1.6 gpf federal maximum, and has met the EPA’s performance criteria. It’s a reliable way to identify an efficient toilet that still flushes well.
Is a dual-flush toilet better than a single-flush low flow toilet?
Either can be efficient, and both can earn the WaterSense label. Dual-flush toilets save the most when everyone in the household uses the reduced flush consistently. Single-flush models are simpler for guests and children.
Are eco modes on bidet seats worth using?
Yes, if your seat has them. They lower seat heat when the bathroom is usually empty, which reduces electricity use without changing how the bidet washes. Check your manual for the available modes.
Next steps
Do a dye test today, since it takes ten minutes and costs almost nothing. Then use the water estimator to see which upgrades matter most for your home. If you’re adding a bidet, compare efficient models in our best smart toilet seats for 2026 roundup, and read are smart toilet seats worth it to weigh the costs.
