Clean Water Act discharge permit · NPDES MS0043494
STANDING PINE WWTF, Walnut Grove, MS: NPDES MS0043494 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 12Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
STANDING PINE WWTF, held by Mississippi Band of Choctaw Indians (Standing Pine WWTF), holds NPDES permit MS0043494, which discharges to Pottock Creek To The Pearl River. EPA’s file records it issued May 21, 2018 and expiring May 31, 2023. 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 | STANDING PINE WWTF |
|---|---|
| Permittee as filed | Mississippi Band of Choctaw Indians (Standing Pine WWTF) |
| NPDES ID | MS0043494 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | May 21, 2018 |
| Expiration date | May 31, 2023 |
| Address | Walnut Grove, MS 39057 |
| Receiving water | Pottock Creek to the Pearl River |
| Subwatershed | Pollard Creek-Pearl River (HUC 031800011404) |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 13Pollutants on file
- 12Under a numeric limit
- 13With a violation of any kind
- 9With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 8 | 280 | 90 | January 31, 2020 | 3,167% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 268 | 70 | December 31, 2023 | 99,999% over the limit |
| Coliform, fecal general | 0 | 269 | 57 | March 31, 2018 | 99,999% over the limit |
| Solids, suspended percent removal | 2 | 172 | 56 | February 28, 2026 | 1,640% over the limit |
| Chlorine, total residual | 2 | 163 | 53 | December 31, 2023 | 45,355% over the limit |
| Oxygen, dissolved [DO] | 2 | 144 | 48 | May 31, 2025 | 92% over the limit |
| E. coli | 4 | 48 | 44 | February 28, 2026 | 99,999% over the limit |
| Solids, total suspended | 6 | 410 | 33 | February 28, 2026 | 243% over the limit |
| BOD, 5-day, percent removal | 2 | 5 | 3 | November 30, 2025 | 99,999% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 272 | 0 | ||
| pH | 4 | 255 | 0 | ||
| Nitrogen, total [as N] | 4 | 18 | 0 | ||
| Phosphorus, total [as P] | 4 | 18 | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| November 14, 2023 | Dry-weather SSO discharge to waters of the U.S. that may endanger health or the environment | EP6 |
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 MS0043494 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.