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Epa MCP Server

by cyanheadsversion 0.8.0i★ –iComputer or cloud
Registry nameio.github.cyanheads/epa-mcp-server

Install

Overview

Description from the maker (original English)

Search EPA compliance, TRI, Superfund, drinking-water, EJScreen, and AirNow data.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Install

Pick the AI app you use, then copy the settings.

Before you install

  • Basic checks: 3 of 3 passed
  • Runs on the maker’s server: what you ask it goes through their server.
  • Can do 11 things (tools) epa_echo_search_facilities, epa_echo_get_facility, epa_echo_search_violations, epa_echo_get_case …
  • You fill in yourself: AIRNOW_API_KEY, EJSCREEN_API_BASE_URL, MCP_LOG_LEVEL

You need

  • Runs in the cloudNothing to install; it connects over the internet
  • npmNode.js installed (for the npx command)

Which app do you use?

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

  1. Open Settings → Connectors
  2. Press Add custom connector
  3. Paste the address below and press Add
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Add2https://…3
https://epa.caseyjhand.com/mcp

Or run it on your computer

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "epa": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/epa-mcp-server"
      ],
      "env": {
        "AIRNOW_API_KEY": "your-value",
        "EJSCREEN_API_BASE_URL": "your-value",
        "MCP_LOG_LEVEL": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add --transport http epa https://epa.caseyjhand.com/mcp

Or run it on your computer

claude mcp add epa --env AIRNOW_API_KEY=your-value --env EJSCREEN_API_BASE_URL=your-value --env MCP_LOG_LEVEL=your-value -- npx -y @cyanheads/epa-mcp-server

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "epa": {
      "url": "https://epa.caseyjhand.com/mcp"
    }
  }
}

Or run it on your computer

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "epa": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/epa-mcp-server"
      ],
      "env": {
        "AIRNOW_API_KEY": "your-value",
        "EJSCREEN_API_BASE_URL": "your-value",
        "MCP_LOG_LEVEL": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "epa": {
      "type": "http",
      "url": "https://epa.caseyjhand.com/mcp"
    }
  }
}

Or run it on your computer

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "epa": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/epa-mcp-server"
      ],
      "env": {
        "AIRNOW_API_KEY": "your-value",
        "EJSCREEN_API_BASE_URL": "your-value",
        "MCP_LOG_LEVEL": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

  1. Open ChatGPT on the web → Settings → Connectors (Apps)
  2. Press Create or Add (some plans need Developer mode under Advanced first)
  3. Paste the address below, give it a name and save
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Create2https://…3
https://epa.caseyjhand.com/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

  • AIRNOW_API_KEY env
    Optional AirNow API key for real-time and forecast air quality data. When unset, the epa_airnow_get_conditions tool is not registered and the other tools run without it. Free registration at docs.air…
  • EJSCREEN_API_BASE_URL env
    Optional override for the EJScreen (EJAM) API base URL used by epa_ejscreen_get_scores. Defaults to https://api.ejanalysis.com — the community-maintained EJScreen rehost by Public Environmental Data…
  • MCP_LOG_LEVEL env
    Sets the minimum log level for output (e.g., 'debug', 'info', 'warn').

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Tool names and descriptions exactly as the server reported them on Nov 6, 2026. The maker wrote them, not us; we show them as plain text.

  • epa_echo_search_facilities

    ECHO: Search EPA-regulated facilities by location, county, facility name, NAICS industry code, environmental program, or compliance status across CAA, CWA, RCRA, TRI, and SDWA. Returns facility name, EPA Registry ID, coordinates, county FIPS code, per-program registration flags,

  • epa_echo_get_facility

    ECHO: Retrieve a full compliance profile for a single EPA-regulated facility by EPA Registry ID or EPA program ID. Returns facility metadata, the NAICS industry codes its programs record, ECHO's facility-level compliance status, a per-statute (CAA, CWA, RCRA, SDWA, and others ECH

  • epa_echo_search_violations

    ECHO: Search EPA civil and criminal enforcement cases by state, ZIP code, regulatory program, case type, or filing-date range. Returns case identifier, case type and status, lead agency (EPA or state), primary law and section, enforcement outcome, federal and state penalties, cos

  • epa_echo_get_case

    ECHO: Retrieve one civil enforcement case by case number, with the facilities, defendants, and settlements behind it. Returns the case's category, enforcement type, status, lead agency, relief sought, outcome, court and DOJ docket numbers, summary, and penalty, cost-recovery, com

  • epa_tri_get_facility_releases

    TRI: Query Toxic Release Inventory annual chemical release data for a specific facility. Returns per-chemical release records with chemical name, reporting year, on-site releases by medium (air, water, land, underground injection) and their total, and the Form R one-time release

  • epa_tri_search_releases

    TRI: Search Toxic Release Inventory data across facilities in a state or county, for one reporting year or, without year, every available year newest first. Returns facility name and county, TRI facility ID, EPA Registry ID (the registry_id epa_echo_get_facility takes), parent co

  • epa_superfund_search_sites

    Superfund: Search Superfund (CERCLA/SEMS) sites by location or NPL listing status. Returns site identifiers, source NPL status labels, non-NPL assessment and archive metadata when available, coordinates, and county FIPS code. Accepts either state/city/ZIP, returned in SEMS site I

  • epa_superfund_get_site

    Superfund: Retrieve a site by exact SEMS site ID from epa_superfund_search_sites, with all recorded contaminant associations and their media, operable units, and EPA actions. Repeated chemicals in different contexts and duplicate source rows are retained. An existing site without

  • epa_water_search_systems

    Drinking water (SDWIS): Search public water systems by state, ZIP code, or county served. Returns system name, PWSID, population served, primary water source, and activity status, in PWSID order; page through a large match with offset and nextOffset. zip_code matches a system's a

  • epa_ejscreen_get_scores

    EJScreen: Get EJScreen environmental-justice indicators for a point and surrounding buffer. Returns the 13 EJScreen environmental indicators (PM2.5, ozone, diesel particulate, NO2, lead paint, traffic proximity, Superfund/RMP/hazardous-waste/wastewater proximity, underground stor

  • epa_airnow_get_conditions

    AirNow: Get current AQI observations or the issued AQI forecast for a US location from the AirNow API. Provide either zip_code or both latitude and longitude. Current mode returns the latest hourly NowCast AQI for each pollutant (PM2.5, ozone, PM10) from the closest monitor withi

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified with the GitHub account cyanheads, which owns the repo

  • … Not checked yet

    Still maintained

    We have not read this repo from GitHub yet

  • … Not checked yet

    Has a licence

    We have not read this repo from GitHub yet

  • ✓ Pass

    Endpoint responds

    Responded in 131 ms (HTTP 200)

  • – Not applicable

    Sign-in with OAuth

    No sign-in needed

  • ✓ Pass

    No hidden instructions in tool descriptions

    Read 11 tool descriptions and found no hidden instructions to the AI

Compared with others in Law & government datai

  • More stars than 0% of the other 1731 servers in this category
  • Published to the registry more recently than 83% of the other 1731 servers in this category
  • Basic checks equal to or better than 100% of the other 1731 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Epa MCP Server safe?

It passed 3 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

Either way works: install it on your computer or connect to the cloud version.

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.8.0) reached the registry 6 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Agent Data Tools: Company, compliance and checks, Agent Data Tools, Private Law Wiki

Alternatives

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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

@cyanheads/epa-mcp-server Search and retrieve EPA environmental data: facility compliance (ECHO), toxic releases (TRI), Superfund sites, drinking water systems, environmental-justice screening (EJScreen), and real-time air quality (AirNow). STDIO or Streamable HTTP.

11 Tools • 2 Resources

Public Hosted Server: https://epa.caseyjhand.com/mcp

Overview

EPA environmental data across five federal programs — facility compliance (ECHO), toxic releases (TRI), Superfund sites, drinking water systems (SDWIS), and environmental-justice screening (EJScreen) — plus real-time AirNow air quality. Pull a facility's inspection and enforcement history, track toxic releases across a region, or screen any point for environmental-justice risk.

Tools
ToolDescription
epa_echo_search_facilitiesSearch EPA-regulated facilities by location, county, name, NAICS code, environmental program, or compliance status across CAA, CWA, RCRA, TRI, and SDWA
epa_echo_get_facilityFull compliance profile for one facility by EPA Registry ID or program ID — compliance status, inspections, enforcement actions, penalties, drinking-water violations, and TRI IDs
epa_echo_search_violationsSearch EPA civil and criminal enforcement cases by state, ZIP code, program, case type, or date range
epa_echo_get_caseOne civil enforcement case with its facilities, defendants, and settlements
epa_airnow_get_conditionsCurrent AQI observations or the issued AQI forecast from AirNow
epa_tri_get_facility_releasesPer-chemical Toxic Release Inventory data for a single facility
epa_tri_search_releasesToxic Release Inventory records across facilities in a state or county
epa_superfund_search_sitesSearch Superfund (CERCLA/SEMS) sites by location or NPL listing status
epa_superfund_get_siteExact Superfund site record and all contaminant associations
epa_water_search_systemsSearch drinking water systems (SDWIS) by state, ZIP code, or county served
epa_ejscreen_get_scoresEJScreen environmental-justice indicators for a point and buffer
Resources
ResourceDescription
epa://facility/{registry_id}Full compliance profile for a facility by EPA Registry ID or program ID (the default pages of epa_echo_get_facility)
epa://superfund/{site_id}Superfund site record and contaminant associations by SEMS site ID

All resource data is also reachable via tools — use epa_echo_get_facility and epa_superfund_get_site for programmatic access in tool-only MCP clients.

Capability reference

epa_echo_search_facilities tool
  • Provide ZIP code, state, city (prefix match, preferably with state), county (prefix match on the recorded name; needs state), 5-digit county_fips, or latitude + longitude + radius_miles (max 100 miles). facility_name (whole words in any order, no commas; also matches other names ECHO records for the facility) and naics (2–6 digits, prefix match) narrow a geographic search
  • Up to 100 facilities per call (default 50); a larger limit, up to 5,000, returns 100 with a limitNotice. Page with offset and nextOffset; totalCount is the match before limit and offset
  • Returns registryId for epa_echo_get_facility, triFacilityIds for epa_tri_get_facility_releases, county and fipsCode, coordinates, per-program flags, and five-year inspection and penalty totals. effectiveQuery echoes the filters as sent
  • programs takes one of CAA, CWA, RCRA, TRI, or SDWA; has_violation keeps facilities in significant noncompliance; active_only keeps facilities with an active permit
epa_echo_get_facility tool
  • registry_id is a Registry ID from epa_echo_search_facilities or a program ID ECHO resolves to one: a PWSID from epa_water_search_systems, a TRI facility ID, an NPDES permit, or a RCRA handler ID. The profile carries the resolved registryId
  • Returns complianceStatus, the naics codes its programs record, a per-statute programCompliance summary, five years of enforcement actions with penalties (caseId feeds epa_echo_get_case), the latest TRI total with triReleasesTransfersYear, and triFacilityIds for epa_tri_get_facility_releases
  • Two paged lists: inspections from the last five years, newest first (inspections_limit default and cap 100, inspections_offset; inspectionsTotal counts them all and inspectionsNextOffset continues), and drinkingWaterViolations for a public water system, newest compliance period first, each with contaminant, measured level, MCL, status, and enforcement actions (drinking_water_violations_limit default 50, cap 200, drinking_water_violations_offset; drinkingWaterViolationsTotal and drinkingWaterViolationsNextOffset). A larger limit returns the cap with a limitNotice, and truncated is true while either list has more
  • If the status lookup fails, the profile returns without complianceStatus and a notice says so; an unknown ID fails as facility_not_found
epa_echo_search_violations tool
  • Requires state or zip_code; up to 100 cases per call (default 50), and a larger limit up to 5,000 returns 100 with a limitNotice. Page with offset and nextOffset; effectiveQuery echoes the filters as sent
  • program filters CAA, CWA, RCRA, SDWA, CERCLA, EPCRA, FIFRA, or TSCA, matching any law a case cites; case_type is civil, criminal, or all (default)
  • date_filed_start / date_filed_end (YYYY-MM-DD, inclusive) bound the filing date. Only civil cases carry filing dates, so with a date all returns civil cases with a notice, and criminal is rejected
  • Returns caseId, caseName, caseType, caseStatus, enforcementOutcome, leadAgency, the primary law (programsViolated) and primarySection, federal and state/local penalties, cost recovery, compliance action and SEP costs, and filed, settlement, and closed dates. Criminal cases omit status, outcome, state/local penalty, and cost fields
  • Case rows name no facility: pass a civil caseId to epa_echo_get_case
epa_echo_get_case tool
  • case_id is a civil case number: a caseId from epa_echo_search_violations (such as 03-2014-7010) or a formal action's caseId from epa_echo_get_facility. A criminal CR_ number fails as criminal_case before any request; an unknown number fails as case_not_found
  • Returns the case's category code, enforcement type, status, lead agency, relief sought, outcome, court and DOJ docket numbers, summary, and penalty, cost-recovery, compliance-action, and SEP totals, plus lawsAndSections, defendants, pollutants, and milestones
  • facilities lists the facilities the case names, one per Registry ID, with address, NAICS and SIC codes, and the program IDs the case links; pass a registryId to epa_echo_get_facility
  • enforcementConclusions lists each order, consent decree, or other settlement with its facilities, dates, penalties and costs, complying actions, pollutant reductions, and Supplemental Environmental Projects
  • The report is not paged: a case naming 115 facilities and 117 settlements returns about 120 KB across both response surfaces
epa_airnow_get_conditions tool
  • Provide zip_code (5 digits, or a ZIP+4 read as its first five) or both latitude and longitude; mode is current (default) or forecast
  • Current mode returns each pollutant's latest hourly NowCast AQI from the closest monitor within 50 miles; forecast mode returns each issued day with dateValid, actionDay, and discussion, and forecast_date (a real YYYY-MM-DD date) keeps one day
  • Readings carry categoryName and categoryNumber (1 Good–6 Hazardous); attribution marks the data preliminary and unsuitable for regulatory or enforcement decisions
  • Registered only when AIRNOW_API_KEY is set; responses cache for about one hour
epa_tri_get_facility_releases tool
  • facility_id is the TRI facilityId from epa_tri_search_releases or epa_echo_get_facility triFacilityIds; optional year (1987–2030) and partial chemical_name
  • Returns per-chemical on-site releases to air, water, land, and underground injection, their sum totalOnSiteReleasesInLbs, and the Form R Section 8.8 oneTimeReleaseInLbs, which the media quantities already include, newest reporting year first
  • limit defaults to and is capped at 500 filings; a larger value up to 5,000 returns 500 with a limitNotice. Page with offset and nextOffset; truncated, shown, cap, and guidance mark a page with more
  • Quantities are in pounds; dioxin records reported in grams are converted and carry reportedUnit: "grams"
epa_tri_search_releases tool
  • Requires 2-letter state (any case); optional county (case-insensitive partial match on the bare name; a trailing County, Parish, Borough, City and Borough, Census Area, or Municipality is dropped), partial chemical_name, and year; newest reporting year first when year is omitted
  • Up to 200 records per call (default 50); a larger limit up to 5,000 returns 200 with a limitNotice. Page with offset and nextOffset; effectiveQuery echoes the filters as sent. Records come in reporting-year order, not ranked by quantity
  • Returns facilityId for epa_tri_get_facility_releases, registryId for epa_echo_get_facility, parentCompany, and the Form R Section 8.8 oneTimeReleaseInLbs; include_release_breakdown: true adds on-site releases to air, water, land, and underground injection plus totalOnSiteReleasesInLbs, at the cost of one more upstream request (up to ~20 seconds when EPA has not cached it)
  • Dioxin records reported in grams are converted to pounds and

Only the beginning is shown; read the rest in the repo

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