California Office of Environmental Health Hazard Assessment
Website: https://oehha.ca.gov/
The mission of the Office of Environmental Health Hazard Assessment (OEHHA) is to protect and enhance public health and the environment by scientific evaluation of risks posed by hazardous substances.
Search California Office of Environmental Health Hazard Assessment datasets
26 datasets
Fish Consumption Advisory Serving Recommendations
- Published by: California Office of Environmental Health Hazard Assessment
- Last updated: Monday, January 5, 2026
- File types: PDF, CSV
Summary of fish advisories that recommend how often you can safely eat fish caught from water bodies in California based on the level of chemical cont...
Toxicity Criteria Database
- Published by: California Office of Environmental Health Hazard Assessment
- Last updated: Tuesday, December 30, 2025
- File types: CSV, PDF
Toxicity data for Air (Acute and Chronic Reference Exposure Levels (RELs)), Water (Public Health Goals (PHGs)), Soils (California Human Health Screeni...
CalEnviroScreen 4.0 Results
- Published by: California Office of Environmental Health Hazard Assessment
- Last updated: Monday, January 5, 2026
- File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML, TXT, XLSX, GPKG, GDB
The Office of Environmental Health Hazard Assessment (OEHHA) announces the availability of a new version of the California Communities Environmental...
SB 535 Disadvantaged Communities 2022
- Published by: California Office of Environmental Health Hazard Assessment
- Last updated: Monday, January 5, 2026
- File types: HTML, ARCGIS GEOSERVICES REST API
This map shows the 2022 disadvantaged communities designated by CalEPA for the purpose of SB 535. These areas represent: Highest scoring 25% of cen...
SB 535 Disadvantaged Communities 2022 (Federal Tribal Areas)
- Published by: California Office of Environmental Health Hazard Assessment
- Last updated: Monday, January 5, 2026
- File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML
This map shows the 2022 disadvantaged communities designated by CalEPA for the purpose of SB 535. These areas represent:Highest scoring 25% of census ...
SB 535 Disadvantaged Communities 2022 (Census Tracts)
- Published by: California Office of Environmental Health Hazard Assessment
- Last updated: Monday, January 5, 2026
- File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML
This map shows the 2022 disadvantaged communities designated by CalEPA for the purpose of SB 535. These areas represent:Highest scoring 25% of census ...
SB 535 Disadvantaged Communities (Additional Tribal Areas 2023 & 2024)
- Published by: California Office of Environmental Health Hazard Assessment
- Last updated: Monday, January 5, 2026
- File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML
This map shows the 2022 disadvantaged communities designated by CalEPA for the purpose of SB 535. These areas represent:Highest scoring 25% of census ...
CalEnviroScreen 4.0 Data Dashboard and User Guide
- Published by: California Office of Environmental Health Hazard Assessment
- Last updated: Monday, January 5, 2026
- File types: HTML, ARCGIS GEOSERVICES REST API
CalEnviroScreen 4.0 was released in October 2021 as part of continued efforts by the CalEPA’s Office of Environmental Health Hazard Assessment to map ...
CalHeatScore Feature Layer
- Published by: California Office of Environmental Health Hazard Assessment
- Last updated: Monday, January 5, 2026
- File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML, TXT, XLSX, GPKG, GDB
CalHeatScore is a public health tool to help Californians stay informed, ready, and safe when temperatures rise. The purpose of CalHeatScore is to red...
CalEnviroScreen 4.0 and Race/Ethnicity Analysis
- Published by: California Office of Environmental Health Hazard Assessment
- Last updated: Monday, January 5, 2026
- File types: HTML, ARCGIS GEOSERVICES REST API
CalEnviroScreen scores represent a combined measure of pollution and the potential vulnerability of a population to the effects of pollution. Like the...