Written by: Gene Fitzgerald // Last Updated: Nov 16, 2022 Show
Please note: This page may contain affiliate links. If you buy a product or service through such a link we earn a commission at no additional cost to you. Learn more about our product review process or check our FTC affiliate disclosure. Choosing between a 5-micron and a 20-micron sediment water filter comes down to knowing what contaminants you’re trying to remove. It doesn’t make sense to invest in a very fine filter if all you need to remove is dirt and other larger contaminants. If you’ve had your water tested and the tests indicate the presence of smaller contaminants, it’s time to think about more precise filters… Contents
Key Takeaways
What Are Micron Ratings Used for?Micron ratings are a standard measurement on the (sediment) water filter market. They state how fine particles can get before they are not captured by a filter anymore. For example, a 5-micron sediment filter will capture any floating particles with a diameter of 5 microns and above. The Size of a MicronHow large is a micron exactly? It’s quite small – just 0.0001 of a centimeter. Spider webs tend to be just a couple of microns thick, and some mold spores can be as small as 3 microns. Lead dust is very fine, in some cases reaching a size of just 0.1 micron. Nominal vs AbsoluteIf possible, always go with an absolute-rated micron filter rather than one with a nominal micron rating. Nominal ratings are just provided as a rough guideline and not meant to be a precise indicator of a filter’s capabilities. Generally speaking, a nominal micron rating indicates that a water filter can remove about 70 to 80% of contaminants of the indicated size. An absolute rating, on the other hand, guarantees that close to 100% of sediments of the indicated micron size will be removed. About Micron Water FiltersWhen shopping for sediment water filters, you should always take micron ratings into consideration. If a filter has its absolute micron ratings listed, this means that the manufacturer has specifically tested it against contaminants of this size. As long as you’re buying from manufacturers with a good reputation, you will know you can trust their ratings.  5 vs 20-Micron Water Filters – Which Is the Right Micron Rating to Choose?If your water supply contains contaminants smaller than 20 microns, then a 20-micron filter would be insufficient for adequate filtration. If most of your contaminants are above that size, however, you might be able to use a single 20-micron filter without any issues. Many people choose a combined approach. This involves starting with a larger filter, such as 50 or even 100 microns, and adding more filters with decreasing sizes after that. The main issue with using smaller filters is that they may restrict your water flow. This is especially true for households where the water pressure is already low. Test Your Water SupplyThat’s why testing your water supply is the most important step in choosing a suitable filter. You should take the time to have your water tested so you will know exactly what types of contaminants you’re dealing with and what types of sediment filters you need. That way, you’ll avoid spending unnecessary money on filters that you don’t need, and will also prevent potential problems with your water flow. 20 MicronHere is what a 20-micron sediment filter can remove:
5 MicronHere is what a 5-micron sediment filter can remove: All of the above plus
Keep Water Pressure and Flow in MindNever underestimate the potential impact of a fine water filter on your water pressure. Always start with the largest possible filter and decrease the size of subsequent filters as appropriate. Using a filter that’s too small will likely cause water pressure problems and restrict your water flow. If you have any questions about 5-micron vs 20-micron sediment filters please don’t hesitate to leave a comment below! About the Author Gene Fitzgerald Gene Fitzgerald has been with BOS since the very beginning. She is head of content creation and has fully immersed herself into the home water treatment industry only to
become an expert herself. Outside of BOS, Gene loves reading books on philosophy & social issues, making music, and hiking. Is a 20The pores of a 20-micron filter are double the size of a 10-micron filter and best for large debris. Any particle smaller than 35 microns is too small to see without a microscope. The particles filtered from a 25, or 20, or 10 are invisible to the naked eye.
Which is better 5 or 10 micron filter?A 5 micron rating works well in many industries, including the food and beverage industry. This rating filters a little less than the 5 micron rating. Filters with a 10 micron rating can remove some unseen materials from liquid but not bacteria or viruses.
Is a higher micron filter better?When filtering solids from liquids, the smaller the micron rating, the more effective the filter and the greater the number of particles that are removed from the final filtrate.
Is 5 micron filter good for drinking water?The smaller the micron number the better. Try imagining microns like a sieve. A 5 micron water filter will sieve out particles that you can see – but all the other smaller particles will pass through it into your drinking water.
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Which is better 5 micron or 20 micron filter?
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