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Magnolia Water Utility Operating Co., LLC

Sewerage Systems, Lake Charles, Louisiana. NPDES permit LA0081981 expired Oct 31, 2025; its limits still apply. Last 12 months: over a limit 20 times (last April 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A quarterly (20 values), form Q quarterly (4 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
30 values over a limit, 0 required values missing, 0 of 16 reports late

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

All 20 values over a limit
Period endingParameterReportedLimitOver by
October 2025BOD, 5-day, 20 deg. C, daily maximum28 mg/L≤ 15 mg/L87%
October 2025BOD, 5-day, 20 deg. C, monthly average20 mg/L≤ 10 mg/L100%
October 2025Solids, total suspended, daily maximum60 mg/L≤ 23 mg/L161%
October 2025Solids, total suspended, monthly average44 mg/L≤ 15 mg/L193%
November 2025BOD, 5-day, 20 deg. C, daily maximum21 mg/L≤ 15 mg/L40%
November 2025BOD, 5-day, 20 deg. C, monthly average14 mg/L≤ 10 mg/L40%
November 2025Coliform, fecal general, daily maximum3680 #/100mL≤ 400 #/100mL820%
November 2025Solids, total suspended, daily maximum34 mg/L≤ 23 mg/L48%
November 2025Solids, total suspended, monthly average21 mg/L≤ 15 mg/L40%
December 2025Solids, total suspended, daily maximum95 mg/L≤ 23 mg/L313%
December 2025Solids, total suspended, monthly average30 mg/L≤ 15 mg/L100%
January 2026BOD, 5-day, 20 deg. C, daily maximum24 mg/L≤ 15 mg/L60%
January 2026BOD, 5-day, 20 deg. C, monthly average14 mg/L≤ 10 mg/L40%
January 2026Solids, total suspended, daily maximum55 mg/L≤ 23 mg/L139%
January 2026Solids, total suspended, monthly average22 mg/L≤ 15 mg/L47%
February 2026Solids, total suspended, monthly average18 mg/L≤ 15 mg/L20%
March 2026BOD, 5-day, 20 deg. C, daily maximum16 mg/L≤ 15 mg/L7%
April 2026BOD, 5-day, 20 deg. C, daily maximum35 mg/L≤ 15 mg/L133%
April 2026BOD, 5-day, 20 deg. C, monthly average13 mg/L≤ 10 mg/L30%
April 2026Coliform, fecal general, daily maximum670 #/100mL≤ 400 #/100mL68%

Limits in force (24)

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/LA0081981 · MCP: https://passage-data.com/mcp