We proved these ‘forever chemicals’ can last longer than three decades |
The fresh air, picturesque vistas and pristine bush of the Blue Mountains west of Sydney draw millions of visitors a year.
Unfortunately, the Blue Mountains are also the site of a controversial investigation into water contamination with “forever chemicals”, also called PFAS.
Our recent study investigated long-term PFAS contamination from two incidents, both involving petrol tanker crashes and fires. Both accidents occurred in drinking water catchments, and our study found contamination was present but undetected for 24 and 33 years, respectively. We have searched the international literature and could not find similar examples.
PFAS (Perfluoroalkyl and polyfluoroalkyl substances) are a broad category of thousands of synthetic chemicals used in numerous consumer and industry products. Exposure to PFAS is associated with a greater risk of several illnesses.
Our research shows how vulnerable drinking water supplies are to long-term PFAS contamination. It also shows how contamination can remain hidden due to an absence of PFAS monitoring.
Two historical accidents
The 1992 petrol tanker accident in the Blue Mountains at Medlow Bath caused PFAS contamination of the local drinking water supply. And 32 years later it forced........