Environmental Working Group
Is Your Drinking Water Safe? How to Test and Purify Water
Once upon a time, most freshwater was pure and drinkable.
Back then, a major risk was contracting a waterborne infection such as giardia. Now, contaminants from factories, industrial farms, and transportation hubs permeate the water table. Industrial waste and agrochemical runoff aren’t the only sources of contamination. Humans join in the polluting by flushing pharmaceutical drugs and common household chemicals down the drain.