Standards for Water Filter.

NSF Basic Certification Standards for Water Filters 2023

The NSF/ANSI standard is the most extensive and strictest standard for evaluating the performance of water purifiers around the world.

In recent years, microplastics in water have been on the rise. Purifiers offered on the market are mostly NSF42 and 53-certified, which may not meet the demand in recent years.

When choosing a water filter in 2023, it must meet the following certifications at the least:

NSF42: Refers to the perceptibility. Simply put, if the tap water comes out of the water filter, it is completely free of impurities, particles, color changes, odor etc., then it has basically passed the inspection.

NSF53: Refers to the health effect, which is to test whether the tap water can filter heavy metals (lead, mercury, asbestos, etc.), Cryptosporidium, organic chemicals, etc. after passing through the water filter. This certification can be obtained if the test criteria can be met. If you choose a household water filter with the above NSF42 and NSF53, you can basically drink it immediately.

NSF401: "Drinking Water Treatment System - Emerging Pollutants" standard is used to certify that the water treatment system can filter out 15 kinds of pollutants from drinking water, including microplastics, drugs, herbicides, pesticides, and Compounds of Concern to Health that have recently been found in water bodies.