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United States US English. Looking for certified products and systems instead? Home Consumer Resources. Learn about the importance of water treatment standards and protocols. These can be point-of-use under the sink, water pitcher, etc. Health effects are set in this standard as regulated by the U. Carbon filters are an example of this type of product.
The softener reduces hardness caused by calcium and magnesium ions and replaces them with sodium or potassium ions. Users should also note that water exposure could vary depending on the water age, which can be incredibly high in certain situations in which the water does not regularly flow through the piping.
For example, this might occur in schools, where the buildings would be stagnant for months at a time, and thus, the water might not be regularly accessed. The EPA terminated its advisory role in April To keep it current, it underwent the following changes:.
Users might also be interested in revisions made to the previous iteration of this document, NSF , so we have listed them below:. The edition of this American National Standard was a substantial update to the document.
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