An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

National Pollutant Discharge Elimination System (NPDES)

2002 NPDES CSO Report to Congress

2002 Report to Congress

This report, delivered to Congress on January 29, 2002, identifies progress made in implementing and enforcing combined sewer overflow (CSO) controls prior to, and because of, the 1994 CSO control policy.

For convenience, the report has been divided and can be downloaded into sections if desired. The entire full report is also available to be downloaded and viewed below.

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