Water Purification to Prevent Giardia
The cold, clear water found in mountain streams and lakes may look appealing but often contains Giardia lamblia, the parasite that causes giardiasis. On short hikes, you may be able to carry from home enough water to drink. But when you are camping and backpacking, you often need to use other water sources. Water from pumps in campgrounds is usually safe, but if a sign tells you that the water is not safe or if you have any doubts, treat the water before you use it.
To avoid infection with Giardia lamblia and other parasites, use one of these purification methods:
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