Faircap's goal is to provide clean water for everyone, in that vein we are making filtration tools that remove bacteria and viruses. Our aim is to make a $1 water filter, we're hoping to run a crowdfunding campaign to bring the cost down and create a single unit that can filter both chemicals and bacteria and screw onto any standard sized bottle cap.
For researching and learning we came up with a 3d printed version of the Faircap filter. With this project you can fill a bottle full of sludge from a pond, screw the OS3DPWF onto a large plastic bottle, combine it with an ultrafiltration cartridge or leave the filtered water under the sun for 4 hours so that the UV light destroys the DNA from viruses and bacteria, and start pouring your family clean and safe cups of drinking water!
750 million people globally don't have access to clean water and every year the problem worsens. Faircap is developing a variety of open source water filters to provide clean water access for the bottom of the pyramid and to address the needs of the many.
Faircap is sharing the design files and information needed of this 100% open source version to discover and excite a global group of people to collectively work on a multifaceted global problem. Download the files, print your own Faircap, and be a part of the solution. Collaborate with the project at http://www.faircap.org with your own ideas, the more designers we have creating modifications and variations, the faster we'll be able to bring clean water to everyone, openly.
To make your own safe drinking water, you need to understand how to filter the two main classes of contaminants:
First we'll learn to clear the water of floating matter and chemicals since these affect the taste and can have harmful physiological effects. This is accomplished using activated charcoal. Activated carbon is simply charcoal (which you can gather from an extinguished campfire) that has been mixed with salt (25% solution), left to soak overnight, and rinsed. This is the way to make DIY activated carbon. You can see the activated carbon in our cap in the center image.
Second, we need to clear pathogens. Here are a few ways to do that:
In this project we use an ultrafiltration (UF) cartridge with pores so small that pathogens can't penetrate, but water flows through. You can see the UF plastic filter on the left of the photo. We're looking for ways to make our own ultrafiltration filters or portable UV light systems to reduce the filter's cost, and to keep the entire project simple and open source.
As you can see, filtering water is a pretty simple process and doesn't require expensive equipment. You just need to understand the two basic components. There's lots more information at the Center For Disease Control.
Lastly, as long as we're here, download the STL files on this page as we'll need them shortly.