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Environmental Topics
Air
Explore information about Air pollutants, contaminants and studies being done
Climate Change
Learn how California’s climate is changing and how these changes are affecting the state
Fish
Guidelines for eating fish and shellfish
Pesticides
OEHHA’s role in protecting workers and the public from pesticides
Health Education Resources
Water
Risk assessment and hazard evaluation activities relating to chemical contaminants in drinking water
CalEnviroScreen
Explore CalEnviroScreen, a mapping tool showing communities affected by pollution
CalEcotox Database
CalEcotox is a repository that provides data for California ecotoxicological risk assessments.
All Environmental Topics
Browse a list of environmental topics
About
What We Do
Learn about the services performed at OEHHA
Jobs
Employment opportunities at OEHHA
Programs and Reports
Descriptions of the various program units at OEHHA and Reports that pertain to their mission
Contact Us
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OEHHA Laws and Regulations
Links and downloads related to OEHHA statutes and regulations
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Meet the Executive Office
Learn about the Executive Officers
Organizational Chart
View an organizational chart
Proposition 65
About Proposition 65
The Safe Drinking Water and Toxic Enforcement Act
The Proposition 65 List
The current Proposition 65 list is dated December 29, 2023
Meetings, Hearings and Workshops
Upcoming and past meetings, hearings and workshops
Notices
All Proposition 65 notices
Law and Regulations
Links and downloads related to Proposition 65 statute and regulations
Warnings
Visit this website to learn about warnings for exposures to chemicals on the Proposition 65 List
News and Events
Latest News
The latest press releases, reports, notices and documents
Events
Hearings, Meetings and Workshops
Public Comments
Public comment periods and comments received
Library
Chemical Databases
Search chemical information and toxicity values
Documents
Fact Sheets, Press Releases, Publications and Studies
Maps
Online maps including Fish Advisories and CalEnviroScreen
Prop 65 Chemical List
View the Prop65 Chemical List
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Proposition 65
Chemicals Considered or Listed Under Proposition 65
Hydrazine
Hydrazine
More information about
Hydrazine
