Frequent Questions

What is a Discharge Monitoring Report or “DMR”?

The CWA and EPA’s NPDES regulations require permitted facilities to monitor the quality of their wastewater discharge and report these wastewater monitoring data to their permitting authority on a Discharge Monitoring Report (DMR). Wastewater monitoring and reporting is one of the Central Tenets of the National Pollutant Discharge Elimination System (NPDES) Permitting Program (PDF) (6 pp, 147 K)


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