"So how does PUR work? The process occurs in three parts — coagulation, flocculation, and disinfection — which is precisely the same processes that occur in a treatment plant.
First, heavy metals and parasites are combined to form small particles (coagulation). These smaller particles are then glued together to form bigger particles (flocculation), which get so large that they fall to the bottom of the container. The water is further cleaned by the use of a disinfectant, just like in municipal treatment. When the PUR-treated water is strained through a filter, the water is crystal-clear and safe to drink."
This clean water technology can provide safe drinking water instantly to people all around the world who need it.
Here is a video demonstrating the clean water technology