{ "openapi": "3.0.1", "info": { "title": "EPA ECHO Compliance Diff API — CAA, CWA, RCRA, SDWA Enforcement", "description": "Daily diff feed for EPA ECHO. Emits JSONL records for every change to facility compliance status, violations, inspections, federal enforcement cases, or CAA/CWA/RCRA/SDWA permit listings. Replaces $30-200k/yr enterprise EHS-watch (Enhesa, Enviance) at $20-500/mo. 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If empty, falls through to state + program filters.", "default": [], "items": { "type": "string" } }, "state": { "title": "State filter (2-letter code)", "type": "string", "description": "Two-letter US state code (e.g. TX, CA). Empty = no state filter (use cautiously: full national crawl may exceed page budget).", "default": "" }, "programs": { "title": "Program filter", "type": "array", "description": "Subset of CAA / CWA / RCRA / SDWA. Case-insensitive. Empty = all programs.", "default": [ "CAA", "CWA" ], "items": { "type": "string" } }, "only_in_violation": { "title": "Only emit facilities currently in violation", "type": "boolean", "description": "If true, drops facilities whose 12-quarter noncompliance count is 0 before diffing.", "default": false }, "enable_enforcement_cases": { "title": "Walk enforcement-case detail", "type": "boolean", "description": "If true, fetch /case_rest_services.get_cases for every facility. Adds ~1 request per facility — set false for fast surveys.", "default": true }, "max_pages": { "title": "Max pages of cross-program facility lookup", "minimum": 1, "maximum": 25, "type": "integer", "description": "Number of get_facilities pages to walk when no explicit registry_ids provided. Each page is up to page_size rows.", "default": 1 }, "page_size": { "title": "Page size for facility lookup", "minimum": 50, "maximum": 500, "type": "integer", "description": "ECHO accepts up to ~500 per page; default 200 is a polite middle ground.", "default": 200 }, "change_types": { "title": "Change types to emit", "type": "array", "description": "Subset of: compliance_status_change, violation_added, inspection_added, enforcement_case_added, enforcement_case_resolved, permit_change. 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