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Water Filter Working?

How can you tell if your water filter is still working properly?

Question:

How can you tell if your water filter is still working properly?

Submitted by - Myron - Syracuse, NY

Answer:

A tricky question. Is water still flowing through? Then it’s working, at least on some level. Is it removing all the microscopic bugs that you want it to? Can’t answer that one. And the only folks who can are the lab rats who run the tests and analyze them.

But let me ask you this: Why angst about it? Have you tried other ways of treating your water? Personally, I got tired of pumping years ago and haven’t carried a filter since I tested the MSR HyperFlow back in late 2007. We gave it an Editors’ Choice Award, because it’s the lightest, fastest, easiest-to-use filter we’ve tested in a while. But since then, I’ve gone back to using chemical treatments which are so much easier, lighter, smaller, and fool-proof. I like Aquamira drops and tablets. They’re easy, don’t effect the taste of the water, and I’ve never gotten sick in all my years of using it. If you believe the reports (and I do), it will kill anything and everything you’re likely to come into contact with in North American backcountry—protozoa, viruses, and bacteria. For suspect water, you should double the recommended dose, and for silty water, you should prefilter through a bandanna or by allowing it to settle.

That’s my two cents. I’ve tested a ton of filters, but I keep going back to chemicals because I’m always trying to shave weight off my load without sacrificing convenience or safety.

1 Comment

  1. thomas

    hey Dan,

    Do your research. Even at .1 absolute viruses aren’t covered. This purifier uses a proprietary structured matrix which removes all the bugs through methods beyond just pores. There’s even medical grade pads inside to remove chemicals. Anyone who knows-knows that the first need is the only purifier on the market, the rest are filters, and ALL are inferior. The first need will clarify ANY water no matter how dark or brackish, and will even remove the smell and flavor of sulphur hot springs water. Also, the only way to know if your filter was “defective out of the box” is to run the blue dye check they include and tell you to perform. No other filter offers a way to see if it is still working. No other filter will remove the blue dye the first need easily does. If your filter is defective they will replace it. This is the king of purifiers with the highest flow rate out there. It is the only one i would trust in the “urban-interface”. The only question is: is it overkill for your needs as high mountain streams don’t require a filter this heavy. I’ve used this filter for decades and drand pond to kern river water(where it runs through bakersfield, ca) and it has never let me down.

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