California Lowers Perchlorate DLR

Perchlorate Detection Limit for Purposes of Reporting (DLR)

On October 6, 2020 the State Water Resources Control Board (SWRCB) voted to adopt the Division of Drinking Water’s proposal  to lower the perchlorate DLR in a two-step process.  On June 17, 2021 the Office of Administrative Law approved the regulation to lower the perchlorate DLR and the regulation will go into effect on July 1, 2021.

What Will Change?  The perchlorate DLR will be lowered from 0.004 mg/L to 0.002 mg/L effective July 1, 2021 and will be lowered again to 0.001 mg/L effective January 1, 2024.

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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.