Emerging Contaminants
PFAS Forever Chemicals: Nanogram and Parts Per Trillion Benchmarks
Examining PFOA and PFOS maximum contaminant levels in ng/L, parts per trillion (PPT), and parts per billion (PPB).
S
Sarah Jenkins, MS
Environmental Science Specialist
PFAS Forever Chemicals
EPA standards for PFAS (PFOA and PFOS) set limits as low as 4.0 parts per trillion (0.004 PPB / 0.000004 PPM).