Sydney Tap Water Found to Contain 31 PFAS Chemicals, Including 21 New Ones

Australian researchers have found 31 PFAS chemicals in Sydney's tap water, including 21 new chemicals not previously reported. The researchers used sensitive testing methods to detect low levels of chemicals, with concentrations within safe Australian drinking water guidelines. The findings reinforce the need for broader monitoring and highlight the need for stricter guidelines in line with international benchmarks.

Australian researchers have discovered 31 PFAS chemicals in Sydney's tap water, including 21 new ones not previously reported. The University of New South Wales researchers sampled tap water from four catchment sites across Sydney, finding a total of 31 PFAS chemicals [1].

The study, led by Professor Alex Donald, used sensitive testing methods to detect low levels of chemicals, with concentrations within safe Australian drinking water guidelines. The researchers noted that the new chemicals were likely not detected earlier due to the increased sensitivity of their testing methods and their targeted search for specific chemicals [1].

Among the findings, one PFAS chemical was detected globally for the first time in tap water. Additionally, the study identified a "breakdown product of firefighting foams," a rare occurrence in drinking water [1]. The researchers emphasized the need for broader monitoring and stricter guidelines to align with international benchmarks, as the US Environmental Protection Agency considers there is no safe level of PFAS in drinking water [1].

The findings come at a time when the release of an expert advisory panel established by NSW Health found that PFAS health effects appear to be small, with no clinical benefit for individuals to have blood tests for PFAS. The panel also noted that clinical interventions to reduce blood PFAS may cause harm [1].

Meanwhile, major chemical companies Chemours, DuPont, and Corteva have agreed to pay $875 million over 25 years to the State of New Jersey to settle environmental claims including pollution linked to PFAS. This settlement follows a series of lawsuits and settlements totaling over $11 billion in 2023, with experts predicting more litigation and settlements due to new federal regulations and growing awareness of PFAS contamination [2].

The ongoing research and regulatory focus on PFAS highlight the importance of monitoring and addressing potential health risks associated with these "forever chemicals." As Australia's water supplies are precious, especially in harsh environments, ensuring safe drinking water remains a critical concern [3].

References:
[1] https://www.abc.net.au/news/2025-08-12/21-new-pfas-chemicals-identified-in-sydney-tap-water/105644452
[2] https://www.circleofblue.org/2025/world/chemours-dupont-corteva-settle-new-jersey-pfas-claims-for-875-million/
[3] https://www.sbs.com.au/language/assyrian/en/podcast-episode/is-australian-tap-water-safe-to-drink/yf7v2p6tu