Clean Water Act discharge permit · NPDES MS0002925
MISSISSIPPI POWER CO, PLANT JACK WATSON, Gulfport, MS: NPDES MS0002925 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 10Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
MISSISSIPPI POWER CO, PLANT JACK WATSON, held by MISSISSIPPI POWER COMPANY, PLANT JACK WATSON, holds NPDES permit MS0002925, which discharges to Big Lake & Fritz Creek. EPA’s file records it issued March 17, 2016 and expiring February 28, 2021. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | MISSISSIPPI POWER CO, PLANT JACK WATSON |
|---|---|
| Permittee as filed | MISSISSIPPI POWER COMPANY, PLANT JACK WATSON |
| NPDES ID | MS0002925 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | March 17, 2016 |
| Expiration date | February 28, 2021 |
| Issuing agency | MDEQ |
| Address | Gulfport, MS 39503 |
| Receiving water | BIG LAKE & FRITZ CREEK |
| Subwatershed | Fritz Creek-Biloxi River (HUC 031700090507) |
| NAICS | 221112 – Fossil Fuel Electric Power Generation |
| SIC | 4911 – Electric Services |
| Other EPA IDs (FRS) | RCRA handler MSD000824995; ICIS-AIR source MS0000002804700055 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 13Pollutants on file
- 10Under a numeric limit
- 11With a violation of any kind
- 3With 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 |
|---|---|---|---|---|---|
| Temperature, water deg. fahrenheit | 3 | 8 | 4 | July 31, 2025 | 2% over the limit |
| Solids, total suspended | 16 | 15 | 3 | April 30, 2016 | 41% over the limit |
| pH | 14 | 15 | 1 | January 31, 2016 | |
| Oil & Grease | 16 | 12 | 0 | ||
| Flow, in conduit or thru treatment plant | 14 | 12 | 0 | ||
| Chlorination duration | 4 | 8 | 0 | ||
| Chlorine, total residual | 4 | 4 | 0 | ||
| Chlorine, free available | 4 | 4 | 0 | ||
| Iron, total recoverable | 0 | 4 | 0 | ||
| Copper, total recoverable | 0 | 4 | 0 | ||
| Specific conductance | 0 | 1 | 0 | ||
| Zinc, total recoverable | 2 | 0 | 0 | ||
| Chromium, total recoverable | 2 | 0 | 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 MS0002925.
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
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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 MS0002925 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.