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Toilet Top Sink
Wash hands. Save water.
PSA: Buy and install a toilet-top sink. Fresh tap water that would already refill the toilet tank becomes clean water for washing your hands.
Use water twice.
Save Water
Fresh Water
Clean and safe tap water.
Easy Upgrade
Affordable & Practical.
Sustainable
Simple impact that lasts.
The Problem
Most people wash their hands at a regular sink after flushing the toilet. That uses additional clean tap water, water that already did its job and is now wasted.
1.1 to 1.6 gallons of extra water used per flush.
Adds up to thousands of gallons per household each year.
Overburdens water systems and increases utility costs.
A toilet-top sink captures fresh tap water that would already refill the tank and puts it to good use, washing your hands. the water then flows back into the tank for the next flush.
THE FIX IS SIMPLE
No extra water from your regular sink.
Clean, fresh water for handwashing.
Saves water, money, and helps the planet.
How It Works
Install a toilet-top sink.
Flush the toilet.
Fresh tap water flows from the top.
Wash your hands with clean water.
Water drains into the tank below
Stored water is ready for your next flush.
A simple habit that builds lifelong conservation
Prevents extra tap water use with every flush.
Why It Matters
Low-cost upgrade with big long-term savings.
Practical solutions for a sustainable future
Make Low-Waste Living Easier.
This concept reflects the kind of resourceful, low-cost thinking we encourage through our Innovate-A-Thon program, where students design real solutions to everyday waste problems. If you'd like to help fund student innovation like this, consider donating to Ed2S.
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