Do products, offered for sale, have to be certified to NSF Standard 61?
The SDWA does not mention certification. Anyone manufacturing, selling or installing a plumbing product needs to make sure that their products comply with the NSF standard by August 6, 1998. However, 29 states currently have regulations requiring that products be certified to NSF Standard 61, section 9 by an ANSI accredited laboratory and legislation in expected by additional states.