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
28 datasets
CalHeatScore Live Data for API Use
- Published by: California Office of Environmental Health Hazard Assessment
- Last updated: Wednesday, March 11, 2026
- File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML, TXT, XLSX, GPKG, GDB
CalHeatScore is a heat-health ranking system that translates 7-day weather forecasts into easy-to-understand heat scores ranging from 0-4 to indicate ...
Fish Consumption Advisory Serving Recommendations
- Published by: California Office of Environmental Health Hazard Assessment
- Last updated: Friday, March 6, 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...
Draft CalEnviroScreen 5.0
- Published by: California Office of Environmental Health Hazard Assessment
- Last updated: Thursday, February 19, 2026
- File types: GDB, SHP, CSV, XLSX, PDF, LYRX
OEHHA is announcing the availability of draft CalEnviroScreen 5.0 for public comment. CalEnviroScreen is a mapping tool used to identify California co...
Draft CalEnviroScreen 5.0 Results Feature Layer
- Published by: California Office of Environmental Health Hazard Assessment
- Last updated: Wednesday, March 11, 2026
- File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML
The Office of Environmental Health Hazard Assessment (OEHHA) announces the release of the draft CalEnviroScreen 5.0 update. CalEnviroScreen is a mappi...
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: Wednesday, March 11, 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: Wednesday, March 11, 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 (Additional Tribal Areas 2023 & 2024)
- Published by: California Office of Environmental Health Hazard Assessment
- Last updated: Wednesday, March 11, 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 (Federal Tribal Areas)
- Published by: California Office of Environmental Health Hazard Assessment
- Last updated: Wednesday, March 11, 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: Wednesday, March 11, 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 ...