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Environmental Health Investigations branch

People in different environments where they might be exposed to chemicals.


The Environmental Health Investigations Branch (EHIB) studies and explains how the health of our environment affects our health. We provide information that can help reduce human exposure to harmful environmental risks. Our mission is to protect the health of all Californians by identifying environmental hazards, partnering with communities to build their capacity, and promoting healthy environments.

Learn more about EHIB, including current job openings. 

What’s New?

  • Reclaim Your Breathing Social Media Toolkit ​- This toolkit can be used by organizations and others to increase awareness about asthma in the Black community and how individuals can recognize whether their asthma is under control. 

  • Updated Asthma Inequities in Black Californians Infographic (PDF) – This infographic highlights information about asthma in the Black community including how many Black Californians have asthma, emergency department visits, hospital stays, and deaths related to asthma.

  • CA woman poisoned by roommate’s face cream: Consumer alert in English (PDF) and Spanish (PDF) The California Department of Public Health urges consumers to stop using the Rosabell Crema due to it containing mercury. If you or someone you know uses any of the face creams that are pictured or described within this consumer alert, please stop using and contact the Mercury Line at (510) 334-8567 or email

  • Factsheet on Fiberglass and Mattresses (PDF)  This factsheet is intended to raise awareness about the presence of fiberglass in some mattresses. Public complaints have raised concerns that some mattresses in the marketplace may be potential sources of airborne fiberglass which can pose a potential health risk. This factsheet supplements a study on the topic published by CDPH. 

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