Negative Positive
Title: Be very careful when using this filter
Review: This filter only has a 2 micron filtration rating. It is effective against most important waterborne protozoa (giardia and cryptosporidium), but will not filter any harmful bacteria. you should only use this filter in a clean mountain stream that has not been contaminated with fecal material. If you use this filter in a pond or standing water, you are asking for trouble. More expensive filters are rated to 0.2 microns and are effective at removing harmful bacteria. One previous review stated that this filter produced water at a faster rate and clogged less than a more expensive filter. That is likely a very true statement as the filtration pore size on the cheap filter is 10X bigger! If a more expensive filter is clogging, it is doing its job of removing particles that would otherwise end up in your drinking water. Do not assume that all filters are created equal, and just because you run water through some device does not make it safe to drink.
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