This training focuses on effluent exceedance violations on the quarterly National Pollutant Discharge Elimination System (NPDES) Noncompliance Report (NNCR), which provides a comprehensive list of Clean Water Act violations and their resolutions to the public. It will provide an overview of when effluent exceedance violations are generated, criteria for assigning Category I versus II noncompliance, resolution of effluent exceedance violations, and a demonstration of searching and filtering effluent exceedance violations on the quarterly NNCR.