An official website of the United States government.

We've made some changes to If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.


Regional Guidance for Tracking Clean Water Act (CWA) NPDES Inspection-Related Violations and Wet Weather Significant Noncompliance

This memorandum outlines and provides technical guidance for the Office of Enforcement and Compliance Assurance's (OECA's) expectation that regional offices should identify and report violations that are determined via any National Pollutant Discharge Elimination System (NPDES) inspection or other compliance monitoring activity, and evaluate those violations based on the existing NPDES core program guidance (i.e., Enforcement Management System or EMS), the Single-Event Violation Data Entry Guides, the CWA NPDES Compliance Monitoring Strategy (CMS), and the Interim Significant Noncompliance (SNC) Policy for CWA Violations Associated with CSOs, SSOs, CAFOs, and Storm Water (Interim Wet Weather SNC Policy).

Issued October 15, 2008

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.