Clean Water Act discharge permit · NPDES MDR003546
NORTHROP GRUMMAN SYSTEMS CORP, Linthicum, MD: NPDES MDR003546 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
NORTHROP GRUMMAN SYSTEMS CORP holds NPDES permit MDR003546. EPA’s file records it issued July 28, 2020 and expiring December 31, 2025. 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: its NPDES ID, its permit type and status, its dates, its address in Linthicum, Maryland. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MDR003546.
Identity
| Facility as filed | NORTHROP GRUMMAN SYSTEMS CORP |
|---|---|
| Permittee as filed | NORTHROP GRUMMAN SYSTEMS CORP |
| NPDES ID | MDR003546 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | July 28, 2020 |
| Expiration date | December 31, 2025 |
| Issuing agency | MARYLAND DEPARTMENT OF THE ENVIRONMENT |
| Address | Linthicum, MD 21090 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Herbert Run-Patapsco River (HUC 020600031103) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 0Pollutants on file
- 0Under a numeric limit
- 0With a violation of any kind
- 0With an effluent exceedance
EPA’s limits and effluent violation files hold no pollutant row for NPDES MDR003546.
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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MDR003546.
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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
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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 MDR003546 there.
Nearby on the register
- Discharge permits in Linthicum
- Every permit record in Linthicum, A to Z
- Discharge permits in Maryland
- Every permit record in Maryland, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.