Austin Water discusses PFAS testing and floodplain analysis for billion-dollar project

The Austin Environmental Commission convened on April 2, 2025, to discuss critical issues surrounding the city's water treatment and environmental protection efforts. The meeting focused on several key topics, including the management of per- and polyfluoroalkyl substances (PFAS), floodplain analysis, and the potential impact on local ecosystems.

The discussion began with inquiries about the presence of PFAS, commonly referred to as "forever chemicals," in Austin's water treatment processes. Representatives from Austin Water confirmed that while current EPA regulations do not require testing for PFAS in drinking water, the utility has conducted water quality testing over the past year. They reported that Austin's water sources, particularly Lake Travis and Lake Austin, remain well protected, and thus, no immediate treatment for PFAS is necessary on the drinking water side. However, they acknowledged that analysis of wastewater discharges related to PFAS is just beginning.

Commission members expressed interest in whether Austin Water would consider testing for PFAS in the future. The representatives assured that they follow scientific guidelines and collaborate with regulatory agencies to provide necessary data for informed decision-making.

Another significant topic was the flood wall surrounding the water treatment plant. Concerns were raised about the potential for increased erosion caused by the flood wall, drawing parallels to marine ecosystems where similar structures have led to adverse effects. Austin Water officials explained that a two-dimensional model has been utilized to analyze water flow and assess erosion risks as part of their floodplain analysis. They indicated that the findings from this analysis would be reviewed by watershed protection plans and would be made available once finalized.

The commission also touched on the presence of endangered species in the area. While most discussions centered on terrestrial species, questions arose regarding aquatic endangered species. Austin Water representatives stated they were not aware of any aquatic endangered species but noted that compliance with the Endangered Species Act would require an environmental report as part of the permitting process.

The meeting concluded with a reminder of the project's scale, with officials confirming that the water treatment initiative is a billion-dollar undertaking. The commission's discussions highlighted the ongoing commitment to environmental stewardship and the careful consideration of ecological impacts in Austin's development plans. Further updates and analyses are expected as the project progresses.