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PFAS treatment online; Wausau staff outline GAC reactivation, monitoring and permit comment deadlines

Wausau Waterworks Commission · December 3, 2025
AI-Generated Content: All content on this page was generated by AI to highlight key points from the meeting. For complete details and context, we recommend watching the full video. so we can fix them.

Summary

Consultants and staff said the PFAS granular activated carbon system has been operational for over a year, reported equipment fixes and budget status, described a plan to use reactivated carbon to save ~20%, and urged comments on a draft WPDES permit by Dec. 22; testing frequency and potential DNR limits were highlighted.

Donahue Engineering and city staff updated the Wausau Waterworks Commission Dec. 2 on PFAS treatment operations, granular activated carbon (GAC) change-out plans and a draft WPDES permit that imposes PFAS testing requirements and has a public comment deadline later this month.

Susan from Donahue Engineering said the PFAS treatment system has been operational for more than a year and that most construction items are complete. Contractors replaced leaking air-release valves on the GAC vessels at no cost to the…

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