Smart Water Infrastructure and PFAS
Modern water distribution systems incorporate smart meters, SCADA sensors, and automated monitoring equipment. Some components in these systems—including gaskets, O-rings, and electronic housing materials—may contain fluoropolymers that can leach PFAS into drinking water.
PFAS Leaching from Water System Components
NSF International testing has identified PFAS leaching from various plumbing components including certain meter gaskets, valve seats, and sensor housings. While concentrations are typically low, contribution from distribution system materials adds to cumulative exposure.
NSF/ANSI 61 Standard and PFAS
NSF/ANSI Standard 61 governs drinking water system component safety, requiring testing for chemical contaminant leaching. NSF is updating Standard 61 protocols to specifically address PFAS extraction testing, requiring manufacturers to demonstrate PFAS-free or low-PFAS product formulations.
Infrastructure Replacement Planning
Water utilities undertaking infrastructure replacement should specify PFAS-free or NSF 61-compliant low-PFAS components. Life-cycle cost analysis should include PFAS leaching potential as an evaluation criterion alongside hydraulic performance and corrosion resistance.