Ha ha. Do you know what weird trick can kill 99.99% of bacteria and viruses in water, is cheap, safe, and effective, and has been used for over 100 years in the West? You guessed it: chlorine bleach! Anything that raises awareness of the plight of the billions of people in our world without access to safe water is probably a good thing. But I'd suggest that you'll make a bigger impact by donating to a nonprofit like PSI. They run awesome programs using targeted subsidies and "social marketing" to get health promoting products like small bottles of bleach (and condoms! and malaria-preventing mosquito nets!) into millions of poor households. Go ahead and google them; theirs is a fascinating story, and they do amazing work.