Recommended NL for PFBS

On January 15, 2021, the Division of Drinking Water (DDW) posted an Office of Environmental Health Hazard Assessment (OEHHA) recommendation for a Notification Level (NL) for perfluorobutane sulfonic acid (PFBS).  Copy here (OEHHA PFBS NL Recommendation). OEHHA’s recommended NL is 0.5 µg/L.

Background: On February 6, 2020 DDW submitted a request to OEHHA to complete a review of available health effects information and make recommendations for notification levels for the following 7 PFAS compounds:

  • perfluorohexane sulfonic acid (PFHxS)
  • perfluorobutane sulfonic acid (PFBS)
  • perfluorohexanoic acid (PFHxA)
  • perfluoroheptanoic acid (PFHpA)
  • perfluorononanoic acid (PFNA)
  • perfluorodecanoic acid (PFDA)
  • 4,8-dioxia-3H-perflourononanoic acid (ADONA)
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About Dan Askenaizer

Dr. Askenaizer leads WQTS’ work on regulatory compliance support for many of our water agencies clients. Dr. Askenaizer tracks water quality and treatment regulations at the Federal and State levels and provides regulatory updates to our clients. Dr. Askenaizer has strong expertise in the development of Regulatory Monitoring and Compliance Plans (RMCPs), which he has completed for a number of water agencies. He has also been working on a number of projects dealing with the development of distribution system monitoring plans and review of nitrification control strategies. Prior to joining WQTS, Dr. Askenaizer was the Water Quality Manager for the Glendale Water and Power. Under his leadership, the Water Quality Group conducted a demonstration-scale study of chlorite for nitrification control and a pilot-scale study of biological treatment for removal of nitrate. Dan has 30 years of experience working on projects dealing with regulatory, water quality and public health issues. Dan has given numerous presentations at workshops and round-tables across the country for water utilities. Dan was instrumental in developing and implementing a Mentoring Program for water staff and was involved in a Sustainable Development team.