DDW White Paper on Economic Feasibility and CrVI MCL

This morning, the State Water Resources Control Board (SWRCB) Division of Drinking Water (DDW) posted a copy of the enclosed White Paper “Economic Feasibility Analysis in Consideration of a Hexavalent Chromium MCL.” (CA White Paper Econ Feas_CrVI_Feb 2020)  DDW indicates that they will hold three workshops on the White Paper intended to receive public input before proceeding to develop an MCL for hexavalent chromium (CrVI).   WQTS will distribute the notice of the workshops as soon as its available.


In 2014 DDW (at that time the Department of Public Health) adopted an MCL for hexavalent chromium (CrVI) of 10 µg/L.  In May 2017 the Superior Court of Sacramento County invalidated the CrVI MCL indicating that DDW had “failed to properly consider the economic feasibility of complying with the MCL.”  Under California’s Safe Drinking Water Act, MCLs are to be set as close to the Public Health Goal as “technologically and economically feasible, placing primary emphasis on the protection of public health.”

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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.