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EPA — U.S. Environmental Protection Agency Data Service API

Generic Envirofacts REST data service supporting any program.table.

EPA — U.S. Environmental Protection Agency Data Service API is one of 137 APIs that EPA — U.S. Environmental Protection Agency publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

This API exposes 1242 JSON Schema definitions.

Tagged areas include Data Service. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and 1242 JSON Schemas.

This API exposes 3 operations across 3 paths, and defines 1 schema. It is described by OpenAPI 3.0.3, at version 1.0.

Requests are made against a single base URL, https://aqs.epa.gov/data/api.

3 operations 3 paths 1 schemas 3 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.0.3
API Version
1.0
Base URL
https://aqs.epa.gov/data/api
Authentication
API Key
Resource Areas
1

Authentication & Security 1

EPA — U.S. Environmental Protection Agency Data Service API declares 1 security scheme for authenticating requests. An API key is passed in the query as key (emailKey). By default, every request must be authenticated.

  • emailKey — AQS requires email and key query parameters on every request. Register at /signup?email=YOUREMAIL to receive a key by email.

Paths & Operations 3

Across 3 paths, the API surfaces 3 operations — 3 GET. Each is listed below with its method, path, parameters, and response codes.

Data Service 3

Generic Envirofacts REST data service supporting any program.table.

GET
/efservice/{table}/{format}
Query Envirofacts Table
efserviceQueryTable 2 params → 200
GET
/efservice/{table}/{filter}/{format}
Query Envirofacts Table with Filter
efserviceQueryTableFiltered 3 params → 200
GET
/efservice/{table}/{filter}/{range}/{format}
Query Envirofacts Table with Filter and Pagination
efserviceQueryTablePaginated 4 params → 200

Schemas 1

The contract defines 1 schema that model the data the API accepts and returns. Each schema is shown below with its type and property counts.

Row
object
A single Envirofacts row; columns depend on the queried table.

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

epa-data-service-api-openapi.yml Raw ↑

Other APIs EPA — U.S. Environmental Protection Agency publishes across the network.

EPA Facility Registry Service (FRS) API
EPA TRI (Toxics Release Inventory) Web Service
EPA ATTAINS Web Services
EPA WATERS — Watershed Assessment, Tracking & Environmental Results
EPA Grants API
EPA Insect Repellents API
EPA e-Manifest Hazardous Waste Tracking
EPA System of Registries (SoR)
CTX — Center for Computational Toxicology and Exposure APIs
EPA — U.S. Environmental Protection Agency Account Type Codes API
EPA — U.S. Environmental Protection Agency Accounts API
EPA — U.S. Environmental Protection Agency Air Emission Testing API