The NSF-61 is a US drinking water approval. It is to be regarded as the counterpart to the German Elastomer Guideline, which also applies nationally. Accordingly, the NSF-61 industry standard is designed to minimize the undesirable effects of system components on drinking water.
These can occur during all phases of handling drinking water:
The approval is issued by the National Sanitation Foundation (NSF). NSF-61 covers a wide range of components in drinking water systems, including process media for filtration, piping, seals and fittings.
#1 Definition Approval NSF-61
The NSF-61 approval certifies that the components concerned meet the standards for minimal impact on drinking water quality. This is a national, US American approval.
#2 Significance of approval according to NSF-61
Technical requirements for drinking water components are primarily regulated at national level. Conformity with market-specific approvals such as NSF-61 is therefore a prerequisite for market access for manufacturers of water treatment and water supply products.