2019: Serpentine Falls (Western Australia) approx location Site S42
April 2019: 1 PFAS chemical detected. PFOS detected at 87% of the 99% ecological default guideline value.
October 2019: 3 PFAS chemicals detected. PFOS detected at 7.4 times the 99% ecological default guideline value.
For more information: Perfluoroalkyl and polyfluoroalkyl substances (PFAS) in the Perth metropolitan area
Ambient concentrations in surface water and groundwater
November 2022
PFOS 99% ecological default guideline value: 0.00023ug/L