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By 2ndactt/ Photo by Pixabay on

The world is more than our naked eyes can see, and we have learned there are bacteria and viruses in the air the hard way. And even if it looks crystal clear, drinking water can be filled with microbes and parasites invisible to human eyes. 

Getting a water purification system for your homes is one way to solve the problem. The US Centers for Disease Control and Prevention (CDC) offers a guide for choosing water filters. 

1. Choose a filter with an absolute pore size of 1 micron (micrometer) or smaller. 

Amoeba, which can travel up the nose and destroy brain tissues, is 8 micrometers to 15 micrometers in size. The oocysts of cryptosporidium, which may cause diarrhea, vomiting, and fever, measure 5 to 6 micrometers. A water filter with an absolute, not nominal, pore size of 1 micron may strain out most microscopic parasites. 

2. Certifications

Look for “NSF 53” or “NSF 58” with the words “cyst reduction” or “cyst removal” on the product label. NSF stands for National Sanitation Foundation, an independent body testing and certifying products concerning health and safety standards.

3. Reverse osmosis water filter 

Another way to screen out microscopic parasites is using reverse osmosis (RO) water filters, according to the US CDC.  

So, are you looking for a water filter? Here are some for you.

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Water filter