Clean Water Act discharge permit · NPDES MS0044059
JACKSON POTW - TRAHON AND BIG CREEK WWTF, Jackson, MS: NPDES MS0044059 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 17Pollutants under a numeric limit
- 16Pollutants with an effluent exceedance
JACKSON POTW - TRAHON AND BIG CREEK WWTF, held by JACKSON POTW, TRAHON AND BIG CREEK, holds NPDES permit MS0044059, which discharges to Big Creek. EPA’s file records it issued December 8, 2016 and expiring November 30, 2021. 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.
Identity
| Facility as filed | JACKSON POTW - TRAHON AND BIG CREEK WWTF |
|---|---|
| Permittee as filed | JACKSON POTW, TRAHON AND BIG CREEK |
| NPDES ID | MS0044059 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | December 8, 2016 |
| Expiration date | November 30, 2021 |
| Issuing agency | MDEQ |
| Address | Jackson, MS 39212 |
| Receiving water | BIG CREEK |
| Subwatershed | Lake Ridgelea-Big Creek (HUC 031800021001) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 21Pollutants on file
- 17Under a numeric limit
- 19With a violation of any kind
- 16With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 8 | 54 | 25 | March 31, 2024 | 97% over the limit |
| Nitrogen, ammonia total [as N] | 8 | 58 | 23 | March 31, 2024 | 394% over the limit |
| Nitrogen, total [as N] | 8 | 75 | 22 | March 31, 2016 | 98% over the limit |
| Copper, total recoverable | 2 | 25 | 17 | November 30, 2025 | 200% over the limit |
| Solids, suspended percent removal | 1 | 14 | 11 | July 31, 2026 | 160% over the limit |
| Solids, total suspended | 8 | 45 | 10 | March 31, 2024 | 225% over the limit |
| IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 4 | 3 | June 30, 2008 | 91% over the limit |
| IC25 Static Renewal 7 Day Chronic Chrpimephales | 0 | 4 | 3 | June 30, 2008 | 94% over the limit |
| Mercury, total recoverable | 0 | 3 | 3 | October 31, 2005 | 92% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 11 | 2 | February 28, 2013 | 20% over the limit |
| E. coli | 0 | 2 | 2 | February 29, 2024 | 1,363% over the limit |
| Phosphorus, total [as P] | 8 | 52 | 1 | December 31, 2014 | 7% over the limit |
| Oxygen, dissolved [DO] | 3 | 12 | 1 | July 31, 2026 | 28% over the limit |
| Coliform, fecal general | 4 | 7 | 1 | June 30, 2010 | 78% over the limit |
| pH | 2 | 5 | 1 | December 31, 2018 | |
| Zinc, total recoverable | 2 | 3 | 1 | May 31, 2021 | 283% over the limit |
| Chlorine, total residual | 2 | 12 | 0 | ||
| Sludge settleability 30 minute | 2 | 9 | 0 | ||
| BOD, 5-day, percent removal | 1 | 3 | 0 | ||
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | 1 | 0 | 0 | ||
| %Effect Static Renewal 7Day Chronic Pimephales promelas | 1 | 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
- 8Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 2, 2026 | Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment | EP6 |
| August 9, 2026 | Dry-weather SSO discharge to waters of the U.S. that may endanger health or the environment | ST6 |
| July 14, 2026 | PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)] | ST6 |
| July 8, 2026 | Dry-weather SSO discharge to waters of the U.S. that may endanger health or the environment | ST6 |
| June 5, 2026 | Dry-weather SSO discharge to waters of the U.S. that may endanger health or the environment | ST6 |
| May 28, 2026 | Dry-weather SSO discharge to waters of the U.S. that may endanger health or the environment | ST6 |
| May 20, 2026 | Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment | ST6 |
| May 19, 2026 | Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment | ST6 |
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.
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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 MS0044059 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.