Clean Water Act discharge permit · NPDES LA0068730
MAGNOLIA WATER UTILITY OPERATING CO., LLC- GREENLEAVES, Mandeville, LA: NPDES LA0068730 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 29Pollutants under a numeric limit
- 12Pollutants with an effluent exceedance
MAGNOLIA WATER UTILITY OPERATING CO., LLC- GREENLEAVES, held by MAGNOLIA WATER UTILITY OPERATING CO., LLC, holds NPDES permit LA0068730, which discharges to Bayou Chinchuba. EPA’s file records it issued September 18, 2018 and expiring September 30, 2023. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 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- GREENLEAVES |
|---|---|
| Permittee as filed | MAGNOLIA WATER UTILITY OPERATING CO., LLC |
| NPDES ID | LA0068730 |
| 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 | September 18, 2018 |
| Expiration date | September 30, 2023 |
| Address | Mandeville, LA 70448 |
| Receiving water | Bayou Chinchuba |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Bayou Chinchuba (HUC 080902010302) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 33Pollutants on file
- 29Under a numeric limit
- 28With a violation of any kind
- 12With 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] | 3 | 135 | 75 | April 30, 2026 | 450% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 3 | 101 | 34 | August 31, 2025 | 547% over the limit |
| Coliform, fecal general | 3 | 75 | 25 | February 28, 2026 | 99,999% over the limit |
| Cyanide, total [as CN] | 4 | 38 | 23 | December 31, 2025 | 190% over the limit |
| Chlorine, total residual | 1 | 49 | 21 | August 31, 2025 | 2,147,483,650% over the limit |
| Copper, total [as Cu] | 4 | 32 | 18 | September 30, 2023 | 727% over the limit |
| Zinc, total [as Zn] | 0 | 26 | 16 | March 31, 2017 | 1,233% over the limit |
| Solids, total suspended | 4 | 78 | 10 | August 31, 2025 | 370% over the limit |
| Oxygen, dissolved [DO] | 1 | 35 | 9 | August 31, 2016 | 64% over the limit |
| Mercury, total [as Hg] | 0 | 6 | 2 | September 30, 2016 | 3,619% over the limit |
| Whole Effluent Toxicity [WET] - C. dubia | 0 | 2 | 2 | March 31, 2026 | 68% over the limit |
| pH | 4 | 43 | 1 | February 28, 2018 | |
| Flow, in conduit or thru treatment plant | 3 | 41 | 0 | ||
| Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 8 | 0 | ||
| Pass/Fail Static Renewal 7Day Chronic Pimephales promelas | 2 | 8 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 8 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 2 | 8 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 8 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 8 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 8 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 8 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia | 1 | 6 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Pimephales promelas | 1 | 6 | 0 | ||
| Dibromochloromethane | 0 | 6 | 0 | ||
| WET, sublethal retest #1 | 4 | 4 | 0 | ||
| Nitrogen, total [as N] | 3 | 3 | 0 | ||
| Phosphorus, total [as P] | 3 | 3 | 0 | ||
| BOD, 5-day, 20 deg. C | 1 | 1 | 0 | ||
| Whole effluent toxicity - retest #1 | 4 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 4 | 0 | 0 | ||
| WET, sublethal retest #2 | 4 | 0 | 0 | ||
| Whole Effluent Toxicity - Retest #3 | 4 | 0 | 0 | ||
| Whole Effluent Toxicity, Sub-Lethal Retest #3 | 4 | 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
- 5Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| October 28, 2018 | WW SSO - Improper Operation and Maintenance | ST6 |
| September 27, 2018 | Permit Violations - Violation Specified in Comment | ST6 |
| April 1, 2018 | WW SSO - Improper Operation and Maintenance | ST6 |
| April 1, 2018 | Permit Violations - Violation Specified in Comment | ST6 |
| September 1, 2017 | Permit Violations - Failure to Submit Timely Permit Renewal Application | 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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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.