| PFOS/PFAS are such a shit fest. An unholy coalition politicians, gov't administration, scientists and corporate interest tried to cover up historical PFOS pollution around the 3M production site in Zwijndrecht (BE). They were caught red handed by a vigilant citizen journal when some politicians wanted to expedite some car-centric public construction works smack in the middle of the polluted area. The ministers for environment and public works ordered their administrations to turn a blind eye, not to sample the wider area to assess the extent of the PFOS pollution, and under no circumstance communicate to the public about the pollution. A renowned toxicologist was commissioned write down safety norms for the public works in the context of pre-existing PFOS pollution. He took a European reference norm that was already outdated at the time given new toxicological insights, messed up the arithmetic, and, lo and behold, came up with a threshold that was _just_ right for the works to start. A special parliamentary commission was established to investigate, and so we had 3M testify in parliament on how they believe it is a harmless chemical etc. At some point in 2010s 3M switched the production process over to use PFAS which they are dumping in the Scheldt river in absurd amounts to this day. We got some reassuring corporate sop that they promise to reduce PFAS levels in wastewater discharges to 54 kg/year by 2024 (5.375 kg/year in 2021). For reference, Chemours (NL) had a permit for dumping just 2 kg/year in 2020, which sounds about right given our current understanding of the human toxicological effects of PFAS. |
The original "Scotchguard" was PFOS and it was reformulated in the early 2000s to PFAS which is believed to be less dangerous.
PFOS and PFAS are "fluorosurfactants" which are surfactants in the sense of "surface acting agents" but are very different from the usual soaps, detergents and disinfectants that help things mix. Applied to solid surfaces it does the opposite. It's pretty amazing that you can apply it to a rug, pour coffee on it, and it wipes right off without sticking.