NSF tests and certifies claims of water treatment systems.
NSF International (NSF) has added perchlorate to the list of chemicals that drinking water treatment units can be tested against. Perchlorate is both naturally occurring and a manmade chemical found in rocket fuel that may pose serious health risks to consumers. NSF is an independent, not-for-profit organization that certifies products and writes standards for food, water, air and consumer goods.
The new requirements, under NSF/ANSI Standard 58, test and certify drinking water treatment units to ensure that products are available to reduce consumer exposure to perchlorate. Perchlorate has been known to cause thyroid malfunction by decreasing thyroid hormone production needed for prenatal and postnatal growth and development, as well as normal body metabolism. In addition, perchlorate has been linked to thyroid tumor formation.