Layers:

Layer: Environmental_Health_Hazard_Index (19)


Name: Environmental_Health_Hazard_Index

Display Field: STATE_NAME

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: ENVIRONMENTAL HEALTH HAZARD INDEXSummary The environmental health hazard exposure index summarizes potential exposure to harmful toxins at a neighborhood level. Potential health hazards exposure is a linear combination of standardized EPA estimates of air quality carcinogenic (c), respiratory (r) and neurological (n) hazards with i indexing census tracts. Where means  and standard errors  are estimated over the national distribution.  Interpretation Values are inverted and then percentile ranked nationally. Values range from 0 to 100. The higher the index value, the less exposure to toxins harmful to human health. Therefore, the higher the value, the better the environmental quality of a neighborhood, where a neighborhood is a census block-group. Data Source: National Air Toxics Assessment (NATA) data, 2011. Related AFFH-T Local Government, PHA and State Tables/Maps: Table 12; Map 13. References: https://www.epa.gov/ttn/atw/natamain/ To learn more about the Environmental Health Hazard Index visit: https://www.hudexchange.info/resource/4868/affh-raw-data/Date of Coverage: 02/2018

Copyright Text: U.S. Department of Housing and Urban Development

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Supported query Formats: JSON, geoJSON, PBF

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Spatial Reference: 102100 (3857)


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Name: Environmental_Health_Hazard_Index
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Last Edit Date: 7/21/2023 7:08:56 PM

Schema Last Edit Date: 7/21/2023 7:08:56 PM

Data Last Edit Date: 7/21/2023 7:08:56 PM