Government — entry 026 of 90
EPA
EPA's Envirofacts platform exposes the agency's environmental compliance and monitoring databases — air quality, drinking water systems, the Toxics Release Inventory, hazardous waste, and Superfund sites — through a keyless REST API at `data.epa.gov/efservice`. Any of the underlying tables can be queried by building a URL from the table name, filter columns, and an output format, with results returned as JSON, XML, CSV, or Excel. EPA's Developer Central site separately documents smaller topic widgets built on the same data.
AuthenticationNone requiredCall it straight away — no key, no signup.
HTTPSSupportedTraffic is encrypted in transit.
CORSEnabledCallable directly from browser JavaScript.
PricingFreeNo paid tier — free for the documented use case.
FormatsJSON, XML, CSV, ExcelResponses can be requested as JSON or XML or CSV or Excel.
GreatAPIs Score
Score94
Authentication25/25No authentication required
Pricing20/20Free to use
Docs14/20Documentation URL provided
Formats15/15Supports 4 response formats
Freshness20/20Verified within 6 months
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<a href="https://greatapis.com/api/epa/"><img src="https://greatapis.com/badge/epa.svg" alt="Scored 94 on greatapis.com"></a>Auth quickstart
- No key needed — call it now.
Stored keyNo key stored
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.