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A 21-year-old member asked:

What common types of water are of greatest concern?

2 doctor answers2 doctors weighed in
Dr. Michael Depietro
Pulmonary Critical Care 35 years experience
Unclean: Other than contaminated water, that may not be sage to drink, there is no particular safety issue associated with water.
Dr. David Sneid
Endocrinology 41 years experience
Contamination: Ones that are contaminated by chemicals, bacteria, waste products, etc. In other words, water that isn't purified. If you're out in the ocean by yourself and treading water, that would also be a concern.

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Last updated Mar 16, 2013
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