There are many water purification methods but there are none that have the speed and effectiveness of Electro-Coagulation or EC. Even in emergency situations, if you have a battery and some metal plates, you could quite literally drop the contaminants out of the water rapidly. In this presentation, Paul Babcock shows the science behind this very simple but very effective method of purifying water while also sharing some data on his advanced method of EC. His particular electrical method is proprietary but it is important to note that he can accomplish the same purification with only 1/3 of the normally required electricity.
Part of the 2020 Energy Science & Technology Conference series (44 mins downloadable video).