Clean Water Act discharge permit · NPDES MIS110921
GM ORION ASSEMBLY, Lake Orion, MI: NPDES MIS110921 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
GM ORION ASSEMBLY, held by General Motors, LLC, holds NPDES permit MIS110921, which discharges to Carpenter Lake. EPA’s file records it issued March 12, 2021 and expiring March 31, 2026. 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.
What the register holds for GM ORION ASSEMBLY: its NPDES ID, its permit type and status, its dates, its address in Lake Orion, Michigan, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MIS110921.
Identity
| Facility as filed | GM ORION ASSEMBLY |
|---|---|
| Permittee as filed | General Motors, LLC |
| NPDES ID | MIS110921 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | March 12, 2021 |
| Expiration date | March 31, 2026 |
| Issuing agency | State |
| Address | Lake Orion, MI 48359 |
| Receiving water | Carpenter Lake |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Sashabaw Creek (HUC 040900030102) |
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 MIS110921.
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 MIS110921.
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, MIS110921.
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- One watershed — $2,990/year
- One state — $4,990/year
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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 MIS110921 there.
Nearby on the register
- Discharge permits in Lake Orion
- Every permit record in Lake Orion, A to Z
- Discharge permits in Michigan
- Every permit record in Michigan, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.