Clean Water Act discharge permit · NPDES MSR109504
ENTERGY MISSISSIPPI, INC., ENTERGY MANTERO SUBSTATION, Canton, MS: NPDES MSR109504 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
ENTERGY MISSISSIPPI, INC., ENTERGY MANTERO SUBSTATION, held by Entergy Mississippi, Inc., Entergy Mantero Substation, holds NPDES permit MSR109504, which discharges to Bear Creek. EPA’s file records it issued March 20, 2025 and expiring January 31, 2027. 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 ENTERGY MISSISSIPPI, INC., ENTERGY MANTERO SUBSTATION: its NPDES ID, its permit type and status, its dates, its address in Canton, Mississippi, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MSR109504.
Identity
| Facility as filed | ENTERGY MISSISSIPPI, INC., ENTERGY MANTERO SUBSTATION |
|---|---|
| Permittee as filed | Entergy Mississippi, Inc., Entergy Mantero Substation |
| NPDES ID | MSR109504 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | March 20, 2025 |
| Expiration date | January 31, 2027 |
| Issuing agency | MDEQ |
| Address | Canton, MS 39046 |
| Receiving water | Bear Creek |
| Subwatershed | Tilda Bogue-Bear Creek (HUC 080602020304) |
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 MSR109504.
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 MSR109504.
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
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, MSR109504.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
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 MSR109504 there.
Nearby on the register
- Discharge permits in Canton
- Every permit record in Canton, A to Z
- Discharge permits in Mississippi
- Every permit record in Mississippi, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.