About CalEnviroScreen

What is CalEnviroScreen?

  • CalEnviroScreen is a mapping tool that helps identify California communities that are most affected by many sources of pollution, and where people are often especially vulnerable to pollution’s effects.
  • CalEnviroScreen uses environmental, health, and socioeconomic information to produce scores for every census tract in the state.
  • The scores are mapped so that different communities can be compared. An area with a high score is one that experiences a much higher pollution burden than areas with low scores.
  • CalEnviroScreen ranks communities based on data that are available from state and federal government sources.

Click to play the CalEnviroScreen 3.0 training videos or visit our visit our Training Video Page.

What are cumulative impacts?

  • “Cumulative impacts” means exposures and public health or environmental effects from all sources of pollution in a geographic area.
  • Cumulative impacts also take into account groups of people that are especially sensitive to pollution’s effects, such as young children and people with asthma, and socioeconomic factors, such as poverty, race and ethnicity, and education.
  • For CalEPA’s definition of cumulative impacts, see the CalEnviroScreen 3.0 report.

What is Environmental Justice?

  • State law defines environmental justice to mean “the fair treatment of people of all races, cultures, and incomes with respect to the development, adoption, implementation and enforcement of environmental laws, regulations, and policies.”
  • Environmental justice principles are an important part of CalEPA’s goal to restore, protect and improve the environment, and to ensure the health of people, the environment and the economy.
  • CalEPA asked OEHHA to develop CalEnviroScreen to identify communities suffering from cumulative impacts of multiple pollutants and people who are vulnerable to pollution’s effects.
  • Visit CalEPA’s Environmental Justice Program page here.


Reports, Notices, Documents

Oct 27, 2016: CalEnviroScreen 3.0 Draft: Public Comments
The draft CalEnviroScreen 3.0 was released for public comment on September 6, 2016. The public comment period closed on October 21, 2016.  Comments are available for review.
Sep 20, 2016: Borrador CalEnviroScreen 3.0
La Oficina de Evaluación de Peligros a la Salud Ambiental (OEHHA, por sus siglas en inglés), en nombre de La Agencia de Protección Ambiental del Estado de California (CalEPA), comunica que se encue
Sep 6, 2016: CalEnviroScreen 3.0 Draft
Draft screening methodology that can be used to help identify California communities that are disproportionately burdened by multiple sources of pollution.
Sep 5, 2016: CalEnviroScreen 3.0 Draft Maps
Maps of the CalEnviroScreen 3.0 draft results, Pollution Burden, Population Characteristics, and the two new proposed indicators of Cardiovascular disease and Rent-adjusted income.
Aug 16, 2016: CalEnviroScreen Webinar 1
Fall 2016 CalEnviroScreen 3.0 webinar to learn about the tool and major updates to the draft.
Aug 16, 2016: CalEnviroScreen Webinar 2
Fall 2016 CalEnviroScreen 3.0 webinar to learn about the tool and major updates to the draft.
Aug 16, 2016: Los Angeles CalEnviroScreen Workshop
September 7th workshop at which OEHHA will share the proposed updates to the CalEnviroScreen 3.0 draft tool, answer questions, and take public comment.