Clean Water Act discharge permit · NPDES LA0117765
MAGNOLIA WATER UTILITY OPERATING CO., LLC - OAK HARBOR EAST STP, Slidell, LA: NPDES LA0117765 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 10Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
MAGNOLIA WATER UTILITY OPERATING CO., LLC - OAK HARBOR EAST STP, held by OAK HARBOR EAST UTILITY LLC, holds NPDES permit LA0117765. EPA’s file records it issued September 24, 2020 and expiring September 23, 2025. 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 | MAGNOLIA WATER UTILITY OPERATING CO., LLC - OAK HARBOR EAST STP |
|---|---|
| Permittee as filed | OAK HARBOR EAST UTILITY LLC |
| NPDES ID | LA0117765 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | September 24, 2020 |
| Expiration date | September 23, 2025 |
| Address | Slidell, LA 70461 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Bayou Vincent-Bayou Bonfouca (HUC 080902010306) |
| 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
- 21Pollutants on file
- 10Under a numeric limit
- 17With a violation of any kind
- 7With 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 | 28 | 28 | October 31, 2020 | 109% over the limit |
| Coliform, fecal general | 4 | 10 | 10 | August 31, 2025 | 900% over the limit |
| Enterococci | 4 | 10 | 8 | August 31, 2025 | 99,999% over the limit |
| Chlorine, total residual | 0 | 7 | 6 | June 30, 2026 | 14,445% over the limit |
| Solids, total suspended | 6 | 4 | 3 | July 31, 2019 | 1,039% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 6 | 3 | 2 | April 30, 2021 | 147% over the limit |
| Oil and grease | 2 | 1 | 1 | July 31, 2022 | 7% over the limit |
| Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 2 | 0 | ||
| Pass/Fail Static Renewal 7Day Chronic Pimephales promelas | 0 | 2 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 2 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 0 | 2 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 2 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 0 | 2 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 2 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 0 | 2 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia | 0 | 1 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Pimephales promelas | 0 | 1 | 0 | ||
| pH | 4 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 0 | 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
- 4Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| January 1, 2025 | Permit Violations - Discharge Without a Valid Permit | ST6 |
| December 30, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| December 15, 2022 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| December 31, 2018 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
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.
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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 LA0117765 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.