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Magnolia Water Utility Operating Co., LLC - Maison Trace Subdivision

Sewerage Systems, Raceland, Louisiana. NPDES permit LA0049344 expired Sep 30, 2023; its limits still apply. Last 12 months: over a limit 32 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A quarterly (12 values), form Q quarterly (6 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
55 values over a limit, 0 required values missing, 10 of 16 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

All 32 values over a limit
Period endingParameterReportedLimitOver by
October 2025BOD, 5-day, 20 deg. C, daily maximum20 mg/L≤ 15 mg/L33%
October 2025BOD, 5-day, 20 deg. C, monthly average17 mg/L≤ 10 mg/L70%
October 2025Solids, total suspended, daily maximum28 mg/L≤ 23 mg/L22%
October 2025Solids, total suspended, monthly average25 mg/L≤ 15 mg/L67%
November 2025BOD, 5-day, 20 deg. C, daily maximum60 mg/L≤ 15 mg/L300%
November 2025BOD, 5-day, 20 deg. C, monthly average15 mg/L≤ 10 mg/L50%
December 2025BOD, 5-day, 20 deg. C, daily maximum27 mg/L≤ 15 mg/L80%
December 2025BOD, 5-day, 20 deg. C, monthly average20 mg/L≤ 10 mg/L100%
December 2025Solids, total suspended, daily maximum30 mg/L≤ 23 mg/L30%
December 2025Solids, total suspended, monthly average17 mg/L≤ 15 mg/L13%
February 2026BOD, 5-day, 20 deg. C, daily maximum31 mg/L≤ 15 mg/L107%
February 2026BOD, 5-day, 20 deg. C, monthly average31 mg/L≤ 10 mg/L210%
February 2026Solids, total suspended, daily maximum48 mg/L≤ 23 mg/L109%
February 2026Solids, total suspended, monthly average43 mg/L≤ 15 mg/L187%
February 2026pH, instantaneous maximum9.74 SU≤ 9 SU—
March 2026BOD, 5-day, 20 deg. C, daily maximum22 mg/L≤ 15 mg/L47%
March 2026BOD, 5-day, 20 deg. C, monthly average14 mg/L≤ 10 mg/L40%
March 2026BOD, 5-day, 20 deg. C, monthly average20.2 lb/d≤ 17 lb/d19%
March 2026Solids, total suspended, daily maximum32 mg/L≤ 23 mg/L39%
March 2026Solids, total suspended, monthly average21 mg/L≤ 15 mg/L40%
April 2026BOD, 5-day, 20 deg. C, daily maximum57 mg/L≤ 15 mg/L280%
April 2026BOD, 5-day, 20 deg. C, monthly average36 mg/L≤ 10 mg/L260%
April 2026Solids, total suspended, daily maximum92 mg/L≤ 23 mg/L300%
April 2026Solids, total suspended, monthly average61 mg/L≤ 15 mg/L307%
May 2026BOD, 5-day, 20 deg. C, daily maximum28 mg/L≤ 15 mg/L87%
May 2026BOD, 5-day, 20 deg. C, monthly average27 mg/L≤ 10 mg/L170%
May 2026Solids, total suspended, daily maximum47 mg/L≤ 23 mg/L104%
May 2026Solids, total suspended, monthly average40 mg/L≤ 15 mg/L167%
June 2026BOD, 5-day, 20 deg. C, monthly average14 mg/L≤ 10 mg/L40%
June 2026Solids, total suspended, daily maximum60 mg/L≤ 23 mg/L161%
June 2026Solids, total suspended, monthly average32 mg/L≤ 15 mg/L113%
June 2026pH, instantaneous maximum9.67 SU≤ 9 SU—

Limits in force (18)

ParameterStatisticLimitMonths
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 15 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 17 lb/dall year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 15 mg/Lall year
Solids, total suspendeddaily maximum≤ 23 mg/Lall year
Solids, total suspendedmonthly average≤ 25 lb/dall year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (lb/d)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (lb/d)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal generaldaily maximum≤ 400 #/100mLall year

How strict are these limits?

Cited limits by parameter: Louisiana's rules and the federal ones.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/LA0049344 · MCP: https://passage-data.com/mcp