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Clean Water Act discharge permit · NPDES MDR002553

NORTHROP GRUMMAN SYSTEMS CORP. BWI, Linthicum, MD: NPDES MDR002553 discharge permit, effluent exceedances, inspections, penalties

NORTHROP GRUMMAN SYSTEMS CORP. BWI, held by NORTHROP GRUMMAN SYSTEMS CORP., holds NPDES permit MDR002553, which discharges to Patapsco Lower North Branch. EPA’s file records it issued January 30, 2024 and expiring January 31, 2028. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

What the register holds for NORTHROP GRUMMAN SYSTEMS CORP. BWI: its NPDES ID, its permit type and status, its dates, its address in Linthicum, Maryland, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MDR002553.

Identity

Facility as filedNORTHROP GRUMMAN SYSTEMS CORP. BWI
Permittee as filedNORTHROP GRUMMAN SYSTEMS CORP.
NPDES IDMDR002553
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedJanuary 30, 2024
Expiration dateJanuary 31, 2028
Issuing agencyMARYLAND DEPARTMENT OF THE ENVIRONMEN
AddressLinthicum, MD 21090
Receiving waterPATAPSCO LOWER NORTH BRANCH
Receiving water impaired303(D) Listed
SubwatershedDeep Run-Patapsco River (HUC 020600031102)
Other EPA IDs (FRS)RCRA handler MDD000619718; ICIS-AIR source MD0000002400300250

Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES MDR002553.

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES MDR002553.

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

Watch this permit

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MDR002553.

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How we handle your data → Privacy

EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID MDR002553 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

The NORTHROP GRUMMAN SYSTEMS CORP. BWI permit in Linthicum is one of 140 general permit coverages on EPA's NPDES register in Anne Arundel County, this one included. Of the 139 general permit coverages in that county, 74.8% carry an earlier issue date than this one, and 41.4% of the 140 county coverages have a violation on file. This permit has no pollutants under a numeric limit and no pollutants with an effluent exceedance, both recorded as 0.