(Underground Health Reporter) If you’ve traveled to Mexico, you’ve heard the warnings: “Don’t drink the water!” “It’s not sanitary!” “You’ll get the runs!” These warnings aren’t just for tourists to heed; locals need to be wary of contaminated water in Mexico as well. Tap water in the United States fares only a bit better, but in Mexican villages, many locals don’t have the money for filtration systems. A new study conducted by U.S. and Mexican researchers, however, is shedding light on the filtering properties of a popular Mexican spice—cilantro! If further research confirms that cilantro purifies water, then we may just have an extremely inexpensive, all-natural filtering agent on our hands!