Use EPA's Enforcement and Compliance History Online website to search for facilities in your community to assess their compliance with environmental regulations. You can use ECHO to:

Jun 6, 2025 · Data Validation: EPA performs completeness checks on the raw AMA data to validate daily samples. A daily sample must be at least 75% complete from sub-daily measurements to be …

May 20, 2024 · NODI Validation Flag Indicates whether the NODI code is considered valid (Y) or invalid (N) for compliance determination purposes. DMR Submission Days Late The system-generated …

May 13, 2024 · Search for compliance and enforcement data of facilities nationwide using the US EPA's ECHO facility search tool.

Verification in Progress - Reports are being evaluated by EPA via electronic validation and verification checks. Discontinued Reporting without a Valid Reason - Reporting was discontinued without a valid …

National Enforcement and Compliance History Online Data Downloads The Enforcement and Compliance History Online (ECHO) datasets have been compiled for access to larger sets of …

Feb 14, 2025 · ECHO provides integrated compliance and enforcement information for more than one million regulated facilities nationwide. Its features range from simple to advanced, catering to users …

Nov 17, 2025 · These include providing extensive reporting guidance, intelligent reporting software, and training to facilities prior to the reporting deadline as well as data validation and analysis after the …

Reference-Based Validation EPA reference tables such as REF_PARAMETER, REF_UNITS, REF_LIMIT_SET are used to validate reported data to ensure parameter codes match expected …

1. OVERVIEW This guide documents information on the U.S. Environmental Protection Agency (EPA) National Pollutant Discharge Elimination System (NPDES) Noncompliance Report (NNCR) to …