Many cities worldwide have used UV light to keep their water safe. And now individuals have the "cleaning" power in a hand-held SteriPEN.
Having the ability to turn contaminated water into safe drinking water is important for backcountry backpacking, travel to countries with poor water sanitation, and home emergency kits, especially for those of us in earthquake country.
UV light can destroy germs' ability to reproduce and make us sick. I am told that it destroys 99.999% of bacteria. 99.999% of viruses and 99.9% of protozoa, including Giardia. What's a protozoa? Giardia? The names alone - I don't want to drink 'em!
Ok. Let's get something straight. I was never a girl scout. No preconceived ideas about how things are done in the wild. Until now, that is, now that I'm researching the hows and wherefores of backcountry backpacking and getting prepared for bugs, varying weather conditions, food, and, most importantly, hydration.