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Risks of Perfluoroalkyl and Polyfluoroalkyl substances (PFAS) for sustainable water recycling via aquifers

Page, D., Vanderzalm, J., Kumar, A., Cheng, K.Y., Kaksonen, A.H. and Simpson, S. (2019) Risks of Perfluoroalkyl and Polyfluoroalkyl substances (PFAS) for sustainable water recycling via aquifers. Water, 11 (8).

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The prediction of the fate of perfluoroalkyl and polyfluoroalkyl substances (PFAS) in water recycling with urban stormwater and treated wastewater is important since PFAS are widely used, persistent, and have potential impacts on human health and the environment. These alternative water sources have been utilized for water recycling via aquifers or managed aquifer recharge (MAR). However, the fate of these chemicals in MAR schemes and the potential impact in terms of regulation have not been studied. PFAS can potentially be transported long distances in the subsurface during MAR. This article reviews the potential risks to MAR systems using recycled water and urban stormwater. To date, there are insufficient data to determine if PFAS can be degraded by natural processes or retained in the aquifer and become suitable pre-treatment or post-treatment technologies that will need to be employed depending upon the end use of the recovered water. The use of engineered pre-treatment or post-treatment methods needs to be based on a ‘fit for purpose’ principle and carefully integrated with the proposed water end use to ensure that human and environmental health risks are appropriately managed.

Item Type: Journal Article
Murdoch Affiliation(s): School of Engineering and Information Technology
Publisher: Australian Water Association
Copyright: © 2019 MDPI
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