Clean Water Act discharge permit · NPDES IN0054844
NORTHROP GRUMMAN SYSTEMS CORPORATION, Shelbyville, IN: NPDES IN0054844 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 5Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
NORTHROP GRUMMAN SYSTEMS CORPORATION holds NPDES permit IN0054844, which discharges to Big Blue R Via Lt Blue R Via Sewer. EPA’s file records it issued August 23, 2016 and expiring October 31, 2021. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | NORTHROP GRUMMAN SYSTEMS CORPORATION |
|---|---|
| Permittee as filed | NORTHROP GRUMMAN SYSTEMS CORPORATION |
| NPDES ID | IN0054844 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | August 23, 2016 |
| Expiration date | October 31, 2021 |
| Issuing agency | IDEM |
| Address | Shelbyville, IN 46176 |
| Receiving water | BIG BLUE R VIA LT BLUE R VIA SEWER |
| Subwatershed | Thompson Ditch-Lewis Creek (HUC 051202050503) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 5Pollutants on file
- 5Under a numeric limit
- 5With a violation of any kind
- 2With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Tetrachloroethylene | 2 | 24 | 4 | August 31, 2022 | 99,999% over the limit |
| Trichloroethylene | 2 | 21 | 1 | August 31, 2000 | 99,999% over the limit |
| pH | 2 | 22 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 21 | 0 | ||
| Flow, total | 1 | 10 | 0 |
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 IN0054844.
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 IN0054844 there.
Nearby on the register
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- Every permit record in Shelbyville, A to Z
- Discharge permits in Indiana
- Every permit record in Indiana, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.