Final THM PHGs Published

Earlier today (February 7, 2020) the Office of Environmental Health Hazard Assessment (OEHHA) published the final Public Health Goals (PHGs) for the four individual trihalomethanes (THMs).  The PHGs are as follows:

Chloroform – 0.4 parts per billion (ppb)

Bromodichloromethane – 0.06 ppb

Dibromochloromethane – 0.1 ppb

Bromoform – 0.5 ppb.

The PHGs are set based on carcinogenicity and are set at the 1 additional case in one million persons (1 x 10-6) cancer risk estimate.

Two documents were posted : (1) OEHHA’s technical support document for the THM PHGs (OEHHA THM PHGs_Tech Support Doc ), and (2) Response to Public Comments and External Peer review (OEHHA_Response to Comments THM PHGs ).

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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.