OEHHA

Our mission is to protect and enhance the health of Californians and our state's environment through scientific evaluations that inform, support and guide regulatory and other actions.
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Art Hazards

An updated List of Art and Craft Materials that Cannot be Purchased for Use in Kindergarten through 6th Grade. This list is intended to assist schools in complying with state law which prohibits schools from purchasing art or craft materials containing a toxic substance for use by students in these grades.

| Risk Assessment

Announcement of the Developmental and Reproductive Toxicant Identification Committee Meeting Scheduled for Thursday, October 9, 2025

OEHHA will convene a meeting of the Developmental and Reproductive Toxicant Identification Committee (DARTIC). At this meeting the DARTIC will consider the possible listing of bisphenol S (BPS) based on developmental toxicity. OEHHA is also opening a 45-day public comment period on the hazard identification document entitled “Evidence on the Developmental Toxicity of Bisphenol S."
| Proposition 65

Reference Exposure Levels (RELs) for 1,4-Dichlorobenzene

The Office of Environmental Health Hazard Assessment (OEHHA) is announcing the availability of a draft document for public review summarizing the noncancer reference exposure levels (RELs) for 1,4-Dichlorobenzene, as part of the Air Toxics Hot Spots program. OEHHA is also anouncing a comment period that will open November 29, 2024 and will close January 13, 2025. 

| Air

Proposition 65 Compliance Guidance & Regulatory Updates for Businesses

OEHHA’s Proposition 65 Implementation Team will host a hybrid training that will help businesses understand and comply with Proposition 65.
| Proposition 65

Release of the draft report on Synthetic Turf and Scientific Advisory Panel Meeting

The Office of Environmental Health Hazard Assessment (OEHHA) is announcing the release of a draft report on the potential health risks associated with the use by athletes, referees, coaches and spectators of synthetic turf fields.
| Risk Assessment

Fish Advisory Update for Lake Mendocino Offers Safe-Eating Advice for Six Species

Updated fish consumption advice issued for Lake Combie in Mendocino County.
| Fish

California announces tool to protect at-risk communities from dangerous heat waves ahead of triple-digit temperatures

CalHeatScore provides localized warnings and resources for extreme heat events
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California Anuncia una Herramienta Vital Para Proteger a las Comunidades en Riesgo de las Peligrosas Olas de Calor Antes de las Anticipadas Temperaturas de Tres Dígitos

CalHeatScore proporciona advertencias y recursos localizados para eventos de calor extremo.
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Fish Advisory Update for Lake Combie Offers Safe-Eating Advice for Three Species

Updated fish consumption advice issued for Lake Combie in Nevada and Placer counties.
| Fish

Hexavalent Chromium in Drinking Water

The Office of Environmental Health Hazard Assessment (OEHHA) is announcing the availability of a second draft document describing a proposed health-protective concentration (HPC) for noncancer effects of hexavalent chromium (Cr(VI)) in drinking water, as part of the update to the Cr(VI) Public Health Goal (PHG).
| Water