Washington Environmental Health Disparities Map

The Washington Environmental Health Disparities Map is an interactive mapping tool that compares communities across our state for environmental health disparities.

The map shows pollution measures such as diesel emissions and ozone, as well as proximity to hazardous waste sites. In addition, it displays measures like poverty and cardiovascular disease.

The map also provides new and rigorous insights into where public investments can be prioritized to buffer environmental health impacts on Washington's communities, so that everyone can benefit from clean air, clean water, and a healthy environment.

View the Map

Environmental Health Disparities Map


The map is displayed on WTN's Information by Location (IBL) tool. The data on the map include 19 indicators and are divided into four themes:

  • Environmental Exposures (NOx-diesel emissions; ozone concentration; PM2.5 Concentration; populations near heavy traffic roadways; toxic release from facilities (RSEI model))
  • Environmental Effects (lead risk from housing; proximity to hazardous waste treatment, storage, and disposal facilities (TSDFs); proximity to National Priorities List sites (Superfund Sites); proximity to Risk Management Plan (RMP) facilities; wastewater discharge)
  • Sensitive Populations (death from cardiovascular disease; low birth weight)
  • Socioeconomic Factors (limited English; no high school diploma; poverty; race - people of color; transportation expense; unaffordable housing; unemployed)

Note: In January 2022, we discovered inaccuracies in some of the ranks displayed on the Environmental Health Disparities map. The problem was due to a data processing error in the tool's platform, not from errors in the underlying data or methodology. The error was corrected on January 31st, 2022, and the affected ranks were updated to reflect the correct information. To ensure future errors like this do not occur again, we have enhanced our data checking processes.

Learn about how the Environmental Health Disparities map is being used to support Washington's clean energy transformation.


The map was a collaborative project that took several years to develop. It went live to the public in December of 2018.

Those involved in the collaboration include: University of Washington's Department of Environmental and Occupational Health Sciences, Front and Centered, Washington State Department of Health, Washington State Department of Ecology, and Puget Sound Clean Air Agency.

The effort included listening sessions with communities in Washington State. The communities gave input that informed development of the map.

Additional Resources

Environmental Health Disparities Map Flyer (PDF)

Front and Centered

University of Washington's Department of Environmental and Occupational Health Sciences

Environmental health threats combined with population vulnerabilities combine to create risk for environmental health disparities