get_ej_data_by_location
Get EJScreen environmental justice data for a specific location.
Uses the EPA EJScreen REST broker to retrieve EJ screening indicators
for a point location with a buffer distance. Returns environmental
indicators, demographic data, and EJ indexes.
Args:
latitude: Latitude of the location (e.g. 47.61).
longitude: Longitude of the location (e.g. -122.33).
distance: Buffer distance in miles around the point (default 1.0).
get_ej_county_summary
Get EJ indicators for census block groups in a county.
Returns EJScreen environmental justice data for block groups within
the specified county, sorted by highest overall environmental burden.
Includes environmental indicators, demographic data, and EJ indexes.
Args:
state: Two-letter US state abbreviation (e.g. 'WA', 'CA').
county_fips: County FIPS code, either 5-digit full (e.g. '53033')
or 3-digit county portion (e.g. '033'). If 3 digits,
state FIPS is prepended automatically.
limit: Maximum number of block groups to return (default 50, max 500).
get_ej_state_summary
Get a state-level overview of EJ indicators across block groups.
Returns the most environmentally burdened block groups in the state,
sorted by PM2.5 percentile. Useful for identifying areas with the
highest environmental justice concerns.
Args:
state: Two-letter US state abbreviation (e.g. 'WA', 'CA').
limit: Maximum number of block groups to return (default 100, max 500).
get_demographic_indicators
Get demographic vulnerability indicators by block group.
Returns demographic data including minority percentage, low income
percentage, linguistic isolation, education levels, and age
distributions. These are the demographic components used in
EJScreen's EJ index calculations.
Args:
state: Two-letter US state abbreviation (e.g. 'WA', 'CA').
county_fips: Optional county FIPS code (3-digit or 5-digit).
If omitted, returns state-level results sorted by
highest demographic index.
limit: Maximum number of block groups to return (default 50, max 500).
get_environmental_indicators
Get specific environmental indicators by block group.
Returns environmental indicator values and state percentiles for
block groups. Can filter to a specific indicator type or return all.
Args:
state: Two-letter US state abbreviation (e.g. 'WA', 'CA').
county_fips: Optional county FIPS code (3-digit or 5-digit).
If omitted, returns state-level results.
indicator: Optional specific indicator to focus on. Options:
'pm25', 'ozone', 'diesel', 'cancer', 'respiratory',
'traffic', 'lead', 'superfund', 'hazwaste',
'wastewater', 'rmp', 'ust'. If omitted, returns all.
limit: Maximum number of block groups to return (default 50, max 500).