Effectiveness of point-of-use and pitcher filters at removing lead phosphate nanoparticles from drinking water.

ABSTRACT: Orthophosphate (PO₄) addition is a common corrosion control treatment used to lower lead (Pb) concentrations at the consumer's tap by forming relatively insoluble Pb-phosphate (Pb-PO₄) minerals. However, some Pb-PO₄ particles that can form in drinking water are mobile nanoparticles (i.e., 0.001-0.1 µm) that have the potential to reach the tap. Point-of-use (POU) or pitcher filters are often used to manage risks during distribution system upsets, when corrosion control treatment is not optimized, or following Pb service line replacements. To abide by industry convention, POU and pitcher filters must be NSF/ANSI-certified for Pb reduction (NSF/ANSI-53) using a test water containing dissolved Pb and large Pb particles. Certification for particulates reduction

SUBMITTER: Dore E 

PROVIDER: S-EPMC8380470 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature