Unusual Water Saving Sink

By: Ben Erickson

SinkPositive water saving toilet sink.What if I told you that you could wash your hands after every flush without using any extra water? The SinkPositive toilet tank sink works by diverting the water used to fill the toilet bowl through a faucet that turns on and off automatically every time you flush.

And before you ask, the water used for washing is as clean as any in your house. The only difference you’ll notice is that the water in the toilet bowl might have a little soap in it.

SinkPositive is easy to install, adjusts to fit most toilets, and costs around $100.

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4 Comments on “Unusual Water Saving Sink”

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  • Michael Says:
    June 13th, 2009 at 8:23 pm

    Toilets in Japan have been like this for at least the 30 years I’ve been here. They never want to waste anything, even the water that runs into the toilet tank. You can get a setup that runs used bathwater through the toilet here too. Japanese wash outside the bath so as not to waste a whole tub of water per wash, so the water is essentially clean. They are miles ahead here.



  • Thelin Says:
    August 20th, 2008 at 3:27 pm

    Hey, I got mine at Real Goods for a few bucks less than their website. It took a little getting used to, but now it’s automatic. Very cool.



  • Carl Says:
    July 8th, 2008 at 12:17 pm

    To be honest, the toilet is still refilling as I leave the bathroom. That means there is still lots of fresh water flowing through the bowl (and down the drain) as it waits for the tank to refill. And reaching across the length of the toilet seat for the flush handle has never really bothered me, and that’s about as far as one needs to reach the sink. The sink doesn’t come on until after the flush, so you’re there anyway. We make so many lame rationalizations to resist change (“I want my tissue box!”), and change is what we have to do to live a sustainable lifestyle. Optimizing water use is a must and this idea has been in Japan for years!



  • Kimberly Says:
    May 4th, 2008 at 2:15 pm

    To be honest, by the time I’d get my clothes “back in order” and could turn around and close the toilet lid, the water would probably already be shut off, so I’d have to use the lav sink anyway. Besides, the thought of having to lean across the length of a toilet seat so as to reach the faucet doesn’t appeal to me. Not to mention the loss of space for my tissue box and potpourri… Men might like the convenience, since they’re usually already standing facing the toilet tank. Not so sure how they might feel about it on those occasions when they simply must sit.


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