|"No matter how pristine the setting, backcountry users should never assume that a particular water source is free from viral, bacterial, or parasitic contamination. Puriifcation of water is a must." Says Gary Rosenlieb, National Park Service Water Quality Program Head|
"During the past 2 decades, Crypto has become recognized as one of the most common causes of waterborne disease in humans in the United States. The parasite is found in every region of the United States and throughout the world." Says Center for Disease Control and Prevention, U.S. Government
"Wildlife can be chronic carriers of Giardia. which is why we tend to find it most of the time. Crypto is much more erratic. Some years levels are very high." Says Joan B Rose, PhD Homer Chair in Water REsearch, Michigan State University
"I dont trust any surface water any longer. Other people are the issue-and there are few places that haven't had people near them. No one can say what the risk is. It might be 1 in 100 or 1 in 250. But I don't want to take that chance." Says Bruce Macler, Drinking Water Toxicologist for EPA & National Expert on Microbiological Risk.
"EPA estimates as many as 250 out of every 10,000 people come down with Giardia infections from drinking water n the U.S. every year, including well and tap water." Says Backpacker Magazine