Clean Water Act discharge permit · NPDES LA0055085
TOWN OF DUSON STP, Duson, LA: NPDES LA0055085 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 11Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
TOWN OF DUSON STP, held by DUSON, TOWN OF, holds NPDES permit LA0055085. EPA’s file records it issued June 5, 2018 and expiring June 30, 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 | TOWN OF DUSON STP |
|---|---|
| Permittee as filed | DUSON, TOWN OF |
| NPDES ID | LA0055085 |
| 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 | June 5, 2018 |
| Expiration date | June 30, 2023 |
| Address | Duson, LA 70529 |
| Subwatershed | Bayou La Butte-Logging Canal (HUC 080703000401) |
| 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
- 11Pollutants on file
- 11Under a numeric limit
- 9With a violation of any kind
- 6With 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] | 6 | 20 | 11 | January 31, 2026 | 259% over the limit |
| Solids, total suspended | 3 | 15 | 6 | June 30, 2026 | 61% over the limit |
| Coliform, fecal general | 2 | 9 | 3 | August 31, 2024 | 505% over the limit |
| pH | 2 | 8 | 2 | March 31, 2026 | |
| Oxygen, dissolved [DO] | 2 | 4 | 1 | September 30, 2017 | 5% over the limit |
| Solids, total dissolved | 1 | 2 | 1 | June 30, 2022 | 7% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 6 | 9 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 7 | 0 | ||
| Turbidity | 1 | 1 | 0 | ||
| Nitrogen, total [as N] | 3 | 0 | 0 | ||
| Phosphorus, total [as P] | 3 | 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 LA0055085.
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 LA0055085 there.
Nearby on the register
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- Every permit record in Duson, A to Z
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- Every permit record in Louisiana, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.