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Additional modification to the proposed regulation to add section 25904 to Title 27 of the California Code of Regulations.

OEHHA has adopted an updated public health goal (PHG) of 1 part per billion (ppb) for perchlorate in drinking water.  This PHG updates the 2004 perchlorate value of 6 ppb.  Perchlorate is known to block the thyroid’s ability to take in and process iodide, which is a nutrient essential to brain development, growth, heart function, and other systems.

The updated PHG for perchlorate is one part-per-billion (1 ppb) based on the inhibition of iodide uptake into the thyroid gland and the consequent disruption of thyroid hormone production.

Notice of intent to list styrene as known to the State of California to cause cancer via the authoritative bodies mechanism.

OEHHA is requesting comments as to whether styrene meets the criteria set forth in the Proposition 65 regulations for authoritative bodies listings.

A Story of Health was developed by ATSDR, the Collaborative on Health and the Environment (CHE), the University of California, San Francisco, Pediatric Environmental Health Specialty Unit (UCSF PEHSU), the Office of Environmental Health Hazard Assessment, California EPA (OEHHA), and the Science and Environmental Health Network (SEHN) to explain how environments interact with genes to influence health across the lifespan.

A general overview of the Criteria Air Pollutants (PM2.5, course particles, nitrogen dioxide and ozone) is provided, with links to health studies.

The study is the first to consider the effects on people of long-term exposure to ultrafine particles and analyzed data from more than 100,000 middle-aged women whose health status was followed from 2000 through 2007.

Details on OEHHA's work on health-based recommendations for California's Ambient Air Quality Standards on the common "criteria" air pollutants.

February 2015 public comment period and public review of hazard identification materials on BPA and female reproductive toxicity.