What Doesn't Distillation Remove From Water?
According to the CDC, "Distillation Systems use a process of heating water to the boiling point and then collecting the water vapor as it condenses, leaving many of the contaminants behind."
Distillation Systems have a very high effectiveness in removing protozoa (for example, Cryptosporidium, Giardia);
Distillation Systems have a very high effectiveness in removing bacteria (for example, Campylobacter, Salmonella, Shigella, E. coli);
Distillation Systems have a very high effectiveness in removing viruses (for example, Enteric, Hepatitis A, Norovirus, Rotavirus);
Distillation Systems will remove common chemical contaminants, including arsenic, barium, cadmium, chromium, lead, nitrate, sodium, sulfate, and many organic chemicals.
Distillation is good to use in an emergency, however, the vapor can take certain synthetic chemicals in the water with it; e.g., those that have a lower boiling point than water. They rise with the steam and are deposited into your cloth or cup, so consider that when you choose a water source for your solar still.
Credit For Content:
Institute For Creation Research
Survival Book - 98.6 The Art of Keeping Your Ass Alive - Cody Lundin
University of California - Santa Barbara
CDC - Centers For Disease Control