2019: Tomato Lake (Western Australia) approx location Site S23
April 2019: 11 PFAS chemicals detected. PFOS detected at 126.1 times the 99% ecological default guideline value.
October 2019: 10 PFAS chemicals detected. PFOS detected at 143.5 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