NATIONWIDE MONITORING OF PER- AND POLYFLUOROALKYL SUBSTANCES IN WATER IN SOUTH AFRICA Volume III: Summary report on distribution, sources and health effects of per- and polyfluoroalkyl substances in water. NATIONWIDE MONITORING OF PER- AND POLYFLUOROALKYL SUBSTANCES IN WATER IN SOUTH AFRICA Volume III: Summary report on distribution, sources and health effects of per- and polyfluoroalkyl substances in water. Posted in .