Themes, Measures, and Overlays
The data on Environmental Health Disparities (EHD) map includes 25 health measures, which are divided into four themes.
Environmental Exposures
- Ozone concentration
- Particulate matter 2.5 (PM2.5) concentration
- Pesticide exposure (March 2026 release)
- Proximity to heavy traffic roadways
- Risk from diesel and other air toxics
- Wildfire smoke exposure (March 2026 release)
Environmental Effects
- Lead risk from housing
- Proximity to hazardous waste sites
- Proximity to Risk Management Plan sites
- Proximity to Superfund Sites
- Wastewater discharge
- Water quality (March 2026 release)
Sensitive Populations
- Air quality - Related respiratory disease (March 2026 release)
- Death from cardiovascular disease
- Low birth weight
- People with a disability (March 2026 release)
Socioeconomic Factors
- Community retail food environment (March 2026 release)
- Digital infrastructure (March 2026 release)
- No high school diploma
- People of color (race/ethnicity)
- Population living in poverty (<=185% of the federal poverty level)
- Primary language other than English
- Transportation expense
- Unaffordable housing
- Unemployment
In addition to health measures, the EHD map also includes overlays. These are sets of information that are not used as part of the rank calculations. Overlay examples include locations of hospitals or hazardous waste sites. Currently, there are over 27 overlays (PDF) that can be selected to show more related information to the population in a specific community in Washington.
Learn about some of the ways the Environmental Health Disparities (EHD) map is used to support Washington's clean energy transformation. This is an effort that commits Washington to an electricity supply that’s free of greenhouse gas emissions by 2045.