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This winner of the Innovate or Die competition filters water through pedal power:

A peristaltic pump attached to the pedal crank draws water from a large tank, through a carbon filter, to a smaller clean tank. The clean tank is removable and closed for contamination-free home storage and use. A clutch engages and disengages the drive belt from the pedal crank, enabling the rider to filter the water while traveling or while stationary.

Aquaduct pedal-powered water transport and filtration – [via] Link.

Becky Stern

Becky Stern is head of wearable electronics at Adafruit Industries. Her personal site:



  1. Dale says:

    A carbon filter is insufficient against pathogens, in fact it can act as a breeding ground for coliform bacteria (E.Coli), which are prevailent in surface water.
    Some sort of disinfection (UV, oxidation like chlorine, RO/nano/ultra filtration) is needed for the clean tank for the water to be potable.

  2. mastershake916 says:

    It’s a lot like this:

    I like the UV filter method, but I also like the trike transport method. But I think that the clean water tank need to be larger and closer to the ground, there’s no reason for it to be in the front. Overall it’s pretty cool, but I think too much was done to make it look good.

    On another note, why do they have the website so resource intensive?

  3. Damo says:

    Good luck with the pedal uphill

  4. Carl says:

    Why? Gravity works great.

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