Abstract
Section 9 of NSF International/American National Standards Institute (NSF/ANSI) Standard 61 evaluates lead‐leaching potential from end‐point devices to protect consumer health. However, because the NSF/ANSI protocol stipulates a high pH and alkalinity characteristic of municipal waters, it is not likely generalizable to the aggressive water chemistries more consistent with water quality observed in private systems. To assess lead release from components installed in private systems, this study exposed brass and galvanized steel that meet lead‐free requirements to more aggressive waters. As expected, lead leaching from C36000 brass increased with decreasing pH and alkalinity, but post‐2014 lead‐free brass released nondetectable concentrations when exposed to aggressive conditions. However, post‐2014 lead‐free galvanized steel may still release significant lead in aggressive waters as a result of the sorption of lead to plumbing. Although new lead‐free brass products are more protective of communities dependent on private systems, elevated lead from both legacy materials and galvanized steel remains an issue for systems without corrosion control.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.