The Countdown to Maker Faire Bay Area is On!


Homemade toilet tank sink

Energy & Sustainability

This was one of the other winners of the Instructables/TreeHugger/PopSci Go Green! Contest. It’s a fairly easy to build tank-top sink that uses the inflow tank water as a (cold water) hand washing sink.

Hack a Toilet for free water – Link


  • Go Green! contest winners – Link

10 thoughts on “Homemade toilet tank sink

  1. aznridah says:

    Not an original idea. I’ve seen toliets like this in Japan before. I’m hoping this gets mainstreamed in the US though.

  2. Stephen_Tacoma_WA says:

    Thanks for the good laugh. You grossed out my friend and for that I owe you a dollar.

  3. Stephen_Tacoma_WA says:

    p.s. She was reading over my shoulder and hit me in the arm. Luckily she hits like a girl.

  4. Stokes says:

    What’s so gross? It’s not water from the toilet; it’s water going to the toilet. At that point, it’s the same as the water from the tap. It’s not like you’re drinking out of the garbage disposal if you get a glass of water from the kitchen sink…

  5. o4tuna says:

    If you are draining this back into the tank, it is illegal & unsanitary. The required air gap between the supply & waste is *after* the tank. Technically, the tank is a supply device. Water from the tank could be siphoned back into the water system.

    /raised by plumbers – kinda like being raised by wolves, ‘cept I’m handy around the house.

    //Also watched Quincy ME when I was a kid…

Comments are closed.

Discuss this article with the rest of the community on our Discord server!

Gareth Branwyn is a freelance writer and the former Editorial Director of Maker Media. He is the author or editor of over a dozen books on technology, DIY, and geek culture. He is currently a contributor to Boing Boing, Wink Books, and Wink Fun. And he has a new best-of writing collection and “lazy man’s memoir,” called Borg Like Me.

View more articles by Gareth Branwyn
Maker Faire Bay Area 2023 30% off early bird ticket sales ends August 31st, 2023!

Escape to an island of imagination + innovation as Maker Faire Bay Area returns for its 15th iteration!

Prices Increase in....