EPA — U.S. Environmental Protection Agency

EPA Facility Registry Service (FRS) API

Master inventory of EPA-regulated facilities cross-walked across air, water, waste, and drinking-water programs. Production query and submit endpoints require a NAAS account.

GitHub

Documentation

📖
Documentation
https://www.epa.gov/frs/facility-registry-service-frs-api
📖
Authentication
https://www.epa.gov/frs/facility-registry-service-frs-api

Other Resources

🔗
APIsJSON
https://raw.githubusercontent.com/api-evangelist/epa/refs/heads/main/apis.yml

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This API 
curl "https://apis.io/api/v1/apis/epa-facility-registry-service-frs-api"
All apis 
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

API entry from apis.yml

apis.yml Raw ↑ 
name: EPA Facility Registry Service (FRS) API
description: Master inventory of EPA-regulated facilities cross-walked across air, water, waste, and drinking-water
  programs. Production query and submit endpoints require a NAAS account.
humanURL: https://www.epa.gov/frs/facility-registry-service-frs-api
baseURL: https://frsqueryprd-api.epa.gov/facilityiptqueryprd
tags:
- Government
- Facilities
- Master Data
tags_raw:
- Government
- Facilities
- MasterData
properties:
- type: Documentation
  url: https://www.epa.gov/frs/facility-registry-service-frs-api
- type: Authentication
  url: https://www.epa.gov/frs/facility-registry-service-frs-api