WaterNSW found a 1992 petrol tanker crash and explosion was one of three likely sources of so-called "forever chemicals" found in a Blue Mountains drinking water catchment.
Firefighting foam used in historic emergency responses matched chemical signatures of the PFAS chemicals.
What's next?
Medlow Dam and Greaves Creek Dam remain disconnected from the Blue Mountains water supply system until WaterNSW is confident mitigation measures are in place.
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Likely sources of PFAS chemicals in Blue Mountains water catchment revealed
https://www.abc.net.au/news/2025-05-16/nsw-pfas-chemicals-blue-mountains-water-report/105300768