First and foremost, for your water filter to be “best”, you must look first at the water standards set by the EPA. These standards are well documented and well received by water suppliers that they make it a point to adhere to these mandates. But it also pays to look at these and see the “specifics” of your water supply. From here you can have an idea what water filter you might need that can serve you best.
Next, your water filter must be certified by NSF (National Sanitation Foundation International). NSF makes sure that manufacturer’s claims are true. They also do spot checks and unannounced visits to these manufacturers to make sure the certification they give to these water filter products stands true to its purpose. Performance sheets from your water filter can also give you its specifications that can help you see if you bought the right filter for your need.
Aside from these regulatory aspects, your water filter must also meet your minor preferences like its design and installation instructions. If you want your countertop clean, then you can opt for the under sink system (which hides the series of filters) thus giving you a clean look in your kitchen. If you want all of your faucets to give you filtered water, the most cost effective system for you is the whole house water filter.
The last but not the least “best” qualities in a filter are the kind of contaminants and pollutants it actually protects you from in the first place. The best water filter for you must be dependent to the kind of tap water you are receiving in your area. The EPA reports can help you a lot with this. If your raw water is only “guilty” of sediments, then a decent sediment filter will be enough for your use. Going for more sophisticated filters can only mean higher costs but does not add any value for you at all.
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