WaterNSW Reports Negligible PFAS Levels in Blue Mountains Dams

WaterNSW has released the latest findings from its ongoing investigation into the presence of per-and poly-fluoroalkyl substances (PFAS) detected in Medlow Dam, located in the Blue Mountains. According to the dam manager, the results are consistent with previous testing rounds, which indicated negligible PFAS concentrations in untreated, raw source water from Blue Mountains dams, except Medlow Dam, which remains isolated from the water supply.

The organization clarified that raw, untreated water is not supplied directly for consumption as drinking water. Instead, this water is provided to Sydney Water for further treatment processes. WaterNSW emphasized its commitment to keeping the community apprised of developments throughout the investigation.

Sydney Water and NSW Health have both assured the public that Sydney’s drinking water complies with Australian Drinking Water Guidelines, ensuring safety for consumption. Sydney Water’s Head of Laboratory Services, Julia Bartlett, corroborated this by stating that the water quality remains significantly below the guideline limits for PFAS substances. She stressed that the quality of water reaching consumers is in line with stringent safety standards.

It has been noted that while PFAS can exist in drinking water, more common sources of exposure include household products such as sunscreens and food packaging. Julia Bartlett highlighted that the agency is actively working to convey to its customers that drinking water is not a primary PFAS exposure source.

Per-and poly-fluoroalkyl substances are synthesized chemicals valued for their resistance to heat, water, grease, and stains, leading to widespread use in products such as non-stick pans, clothing, and firefighting foams. These substances are persistent in the environment, earning them the term “forever chemicals.”

WaterNSW is involved in a collaborative effort with NSW Health and Sydney Water to ensure the continued safety of drinking water, releasing monthly updates on testing outcomes. The results can be accessed and reviewed by the public via WaterNSW’s official website.