PFAS and Biosolids: The Current State of Affairs

July 25, 2024
Gain an understanding of the current regulatory situation for PFAS in sludge and biosolids, technologies that are helping utilities prepare and address this man-made contaminant, and the trends carving a path for the future of wastewater treatment.

July 25, 2024
2:00 PM ET / 1:00 PM CT / 11:00 AM PT / 7:00 PM GMT 
Duration: 1 hour
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In a proactive effort to tackle PFAS issues before the implementation of federal guidelines, several states are already examining and setting limits for PFAS in land-applied biosolids. In this webinar, presenters will: 

  • Analyze the potential impacts of these state-level PFAS regulations on the beneficial use of biosolids.
  • Consider current trends in PFAS management for wastewater systems; and
  • Discuss strategies for mitigating risks associated with future limitations on PFAS.
  • Summarize emerging technologies that are being considered, specifically those aimed at addressing PFAS, including an overview of innovative solutions and research advancements that show promise in effectively managing and reducing PFAS contamination.

By examining these aspects, the presentation aims to offer a comprehensive understanding of how the wastewater sector can adapt to evolving regulatory landscapes and technological developments to maintain environmental safety and compliance. 


Rashi Gupta 
Wastewater Practice Director 
Carollo Engineers

Rashi Gupta is Carollo Engineer’s wastewater practice director after having previously led the firm’s solids practice. She is a licensed civil engineer in New York and California and obtained her bachelor’s degree in civil engineering from the University of California - Davis, and her master's from the University of Texas - Austin. She is the incoming vice-chair of the WEF Residuals and Biosolids Community, a past-chair of the Solids Separation Focus Group and a member of the Bioenergy Focus Group. 

She has led state-wide co-digestion efforts in California and designed advanced digestion systems throughout the US.  Rashi also co-authored the thickening chapter of WEF’s MOP 8 and has contributed to a number of thickening and dewatering fact sheets produced by the Solids Separation Focus Group.

Dana Gonzalez 
Principal Technologist 
Carollo Engineers

Dana Gonzalez is a principal technologist at Carollo Engineers. She is the California PFAS lead as well as the wastewater innovation lead for Carollo's western region. Prior to her recent transition to Carollo, she was a treatment process engineer at HRSD in southeast Virginia. 
Dana has led projects focused on nutrient removal, resource recovery, water reuse, solids handling, PFAS fate and transport, system and equipment optimization, design and tuning of process controls, and process modeling. Dana has a bachelor’s degree from UCLA, a master's from Virginia Tech, and a PhD from the University of Virginia.