There are about a thousand sites where the levels were way above what would be allowable for drinking water. 300 of them, it was at concentrations of 10,000 nanograms per liter or more. The PFAS can leach down into groundwater and often that's used as drinking water sources. It is also a big problem then for farming because you can get into the food change that way.
Madeleine Finlay speaks to environmental journalist Rachel Salvidge about PFAS, also known as ‘forever chemicals’, which have been found at high levels at thousands of sites across the UK and Europe. Rachel explains what they are, how harmful they can be, and what can be done to mitigate their effects. Help support our independent journalism at
theguardian.com/sciencepod