Tools

9 tools spanning EPA facility compliance, toxic chemical releases, Superfund cleanup sites, drinking water safety, environmental justice screening, and real-time air quality:

epa_search_facilities

Search for EPA-regulated facilities with cross-program compliance data.

• Geographic filters: ZIP code, state, city (city requires state), or latitude + longitude + radius_miles for proximity search
• Program filter: narrow to CAA, CWA, RCRA, TRI, or SDWA registrants
• Compliance filter: has_violation flag to surface only non-compliant facilities
• Returns RegistryID (key for epa_get_facility), FacFIPSCode (county FIPS for Census chaining), and coordinates
• Results cap enforced — unscoped searches are prohibited at the input validation layer

epa_get_facility

Retrieve a comprehensive compliance profile by EPA Registry ID.

• Aggregates 3–5 ECHO DFR endpoints in parallel: program flags and TRI totals, compliance summary, inspection/enforcement history, CAA details (if registered), CWA/NPDES permit details (if registered)
• Uses Promise.allSettled — partial data returned even if one upstream endpoint fails
• Includes formal enforcement actions, penalty amounts, and inspection dates across all programs

epa_search_violations

Search area-level EPA enforcement cases — distinct from per-facility history in epa_get_facility.

• Program filter: CAA, CWA, RCRA, SDWA, CERCLA, FIFRA, or TSCA
• Case type: civil, criminal, or all
• Date range filtering by filing date (ISO 8601)
• Returns case identifier, affected facility name and Registry ID for downstream epa_get_facility lookup

epa_get_air_quality

Get current AQI observations or daily forecasts from AirNow.

• Accepts ZIP code or latitude/longitude coordinates
• mode: current returns the latest observed AQI per pollutant; mode: forecast returns daily AQI forecasts (requires forecast_date)
• AQI categories: Good (1) through Hazardous (6) with numeric and text category
• Data is preliminary — suitable for awareness, not regulatory or enforcement decisions
• AirNow responses cached at ~1 hour TTL to respect rate limits

epa_get_tri_releases

Query per-chemical release breakdown for a single TRI facility.

• Accepts TRI facility ID from epa_search_facilities results
• Returns release quantities by medium: air, water, land, underground injection
• Optional year filter (defaults to most recent available); optional chemical name filter
• TRI data lags ~18 months — most recent available year is typically 2 years prior to current

epa_search_tri_releases

Identify top polluters in a region via TRI data.

• State and optional county scope; required year parameter
• Optional chemical name filter to focus on a specific substance
• Returns facility coordinates for downstream map or proximity analysis
• Complement to epa_get_tri_releases — use this for area discovery, then drill into a specific facility

epa_search_superfund

Search Superfund (CERCLA/SEMS) sites by location or proximity.

• Two input shapes: state/city/ZIP for administrative filters, or lat/lng + radius for proximity
• NPL status filter: listed, not-listed, proposed, or all
• Returns site cleanup status and coordinates for downstream spatial analysis

epa_search_water_systems

Identify drinking water systems with active or recent violations.

• State and optional ZIP code scope
• has_violation flag surfaces only systems with current violations
• PWS type filter: community (CWS), non-transient non-community (NTNCWS), or transient non-community (TNCWS)

epa_get_ejscreen

Screen a point and its surrounding buffer for environmental-justice indicators.

• Input: latitude, longitude, distance (default 1), and unit (miles or kilometers); kilometers are converted to miles before the request, and the buffer is capped at 15 miles
• Returns the 13 EJScreen environmental indicators (PM2.5, ozone, diesel particulate, NO2, lead paint, traffic proximity, Superfund/RMP/hazardous-waste/wastewater proximity, underground storage tanks, drinking-water non-compliance, RSEI toxic air releases) and 6 demographic indicators (people of color, low income, limited English, less than high school, under 5, over 64)
• Each indicator carries national and state percentiles plus EJ Index values; the Demographic Index and Supplemental Demographic Index are included
• Points outside US coverage return a coverage note instead of fabricated indicators
• Data source: EJScreen v2.2 (2022) served via the community-maintained EJAM API (Public Environmental Data Partners), which rehosts EJScreen after EPA discontinued public access in 2025 — not a live EPA endpoint

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