Solar Disinfection, or SODIS for short, is a super simple way to clear water of pathogens. For some reason it doesn't some up often when looking at water purifcation methods. You usually find the standard; boiling, chemical tablets, carbon/ceramic filtration advice, but rarely do you see the SODIS method. Actually it is similar to using artificial UV disinfection. In this case however, the UV rays are coming from the sun!