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Discharge Monitoring Reports

Discharge Monitoring Reports (DMRs) are reports that contain self-monitoring results for wastewater required by National Pollutant Discharge Elimination System (NPDES) permits and some Water Quality Management (WQM) permits. These reports are completed and submitted periodically to DEP and other agencies (typically monthly, quarterly, semi-annually or annually). DMRs may be submitted on paper to DEP regional offices or electronically through DEP’s eDMR system.

DMRs must be submitted by any facility that has been issued an NPDES permit that requires sampling and monitoring (typically sewage treatment plants and industrial facilities with a wastewater or storm water discharge to surface waters). DMRs may also be required for WQM permits with land application of effluent.

NPDES permits frequently require additional information, i.e., supplemental reports, to be attached to DMRs. DEP has established guidance on the preparation of DMRs, including:

Those interested in reviewing DMR data for specific facilities may arrange a file review at DEP's regional offices or check DEP's eDMR data website (if the facility is using the eDMR system).