Epa MCP Server

What epa-mcp-server does

The epa-mcp-server MCP server gives an MCP client access to several EPA data areas through nine tools. It covers regulated facilities and compliance records from ECHO, Toxic Release Inventory data, Superfund sites, drinking water systems, EJScreen indicators, enforcement cases, and AirNow air-quality observations or forecasts.

Facility searches accept locations, programs, and compliance filters across CAA, CWA, RCRA, TRI, and SDWA. A facility profile can include compliance status, program summaries, inspections, enforcement actions, penalties, and TRI identifiers. Other tools search civil or criminal cases, locate Superfund sites, find water systems by state or ZIP code, and retrieve environmental-justice indicators for a coordinate and buffer.

The server belongs in the Environment & Nature category when an agent needs to compare regulated sites, investigate environmental records, or gather public environmental context around a location.

How it works

The epa-mcp-server MCP server supports STDIO and Streamable HTTP transports. A public hosted endpoint is available at https://epa.caseyjhand.com/mcp; the package can also be launched through the npm package referenced by the project’s client installation links.

Search results provide identifiers for follow-up calls. For example, facility searches return an EPA Registry ID for epa_get_facility, while TRI searches return a facilityId for epa_get_tri_releases. The server also exposes two resources: epa://facility/{registry_id} and epa://superfund/{site_id}. Tool calls provide equivalent access for clients that do not use MCP resources.

Results include scope and data-quality details where relevant. Air-quality readings are preliminary and not intended for regulatory or enforcement decisions. Proximity searches may report candidate limits, and water-system or facility queries can include notices when upstream limits affect completeness.

Setup and configuration

Client installation links are provided for Claude Desktop, Cursor, and VS Code. The repository also identifies npm, Bun, TypeScript, and Docker distribution details, and publishes a package under @cyanheads/epa-mcp-server.

Set AIRNOW_API_KEY to register the AirNow tool. Without that variable, the rest of the server’s documented tools may still be available, but epa_get_air_quality is not registered. AirNow responses are cached for about one hour.

The service can be used through the hosted Streamable HTTP endpoint or configured as a local MCP process using the package installation method supported by the selected client.

Tools and capabilities

• Search EPA facilities by ZIP code, state, city, coordinates, program, violation status, or active permit status.
• Retrieve a facility’s recent inspections, five-year enforcement history, penalties, compliance information, and TRI IDs.
• Search enforcement cases by location, program, case type, and filing-date range.
• Retrieve current or forecast AirNow AQI data by ZIP code or coordinates.
• Search TRI records by state or county and retrieve per-chemical air, water, land, and underground-injection releases.
• Search Superfund sites by location, radius, or NPL status; find drinking water systems by state or ZIP code; and retrieve EJScreen indicators for a point and buffer.

Limitations and notes

Several tools impose result limits. Facility and violation searches return up to 100 results, while TRI, Superfund, and water-system searches generally return up to 200. Superfund proximity searches inspect up to 500 candidate sites, and sites without coordinates cannot be found geographically.

TRI quantities are reported in pounds, with dioxin records converted from grams and marked with their reported unit. Large TRI responses can be narrowed by year or chemical name. The water-system ZIP filter applies to the system’s address of record, not necessarily its service area.

AQI current mode uses the closest monitor within 50 miles and returns the latest hourly NowCast values. Forecast mode returns issued forecast days. AirNow data carries an attribution that it is preliminary and unsuitable for regulatory or enforcement decisions.