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Magnolia Water Utility Operating Co., LLC

Sewerage Systems, Thibodaux, Louisiana. NPDES permit LA0081809, in force until Aug 14, 2028. Last 12 months: over a limit 38 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A quarterly (26 values), form Q quarterly (6 values)
Renewal application due
Feb 16, 2028 · 180 days before expiry; your permit may set another date
Last report on file
June 2026
Oct 2024 – Sep 2025
56 values over a limit, 0 required values missing, 9 of 16 reports late

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

All 38 values over a limit
Period endingParameterReportedLimitOver by
October 2025BOD, 5-day, 20 deg. C, daily maximum29 mg/L≤ 15 mg/L93%
October 2025BOD, 5-day, 20 deg. C, monthly average22 mg/L≤ 10 mg/L120%
October 2025Coliform, fecal general, daily maximum1472 #/100mL≤ 400 #/100mL268%
October 2025Coliform, fecal general, monthly geometric mean1114 #/100mL≤ 200 #/100mL457%
October 2025Solids, total suspended, daily maximum91 mg/L≤ 23 mg/L296%
October 2025Solids, total suspended, monthly average49 mg/L≤ 15 mg/L227%
November 2025BOD, 5-day, 20 deg. C, daily maximum38 mg/L≤ 15 mg/L153%
November 2025BOD, 5-day, 20 deg. C, monthly average24 mg/L≤ 10 mg/L140%
November 2025Solids, total suspended, daily maximum42 mg/L≤ 23 mg/L83%
November 2025Solids, total suspended, monthly average33 mg/L≤ 15 mg/L120%
December 2025BOD, 5-day, 20 deg. C, daily maximum21 mg/L≤ 15 mg/L40%
December 2025BOD, 5-day, 20 deg. C, monthly average16 mg/L≤ 10 mg/L60%
December 2025Solids, total suspended, daily maximum43 mg/L≤ 23 mg/L87%
December 2025Solids, total suspended, monthly average32 mg/L≤ 15 mg/L113%
January 2026BOD, 5-day, 20 deg. C, daily maximum17 mg/L≤ 15 mg/L13%
January 2026BOD, 5-day, 20 deg. C, monthly average13 mg/L≤ 10 mg/L30%
January 2026Solids, total suspended, daily maximum25 mg/L≤ 23 mg/L9%
January 2026Solids, total suspended, monthly average20 mg/L≤ 15 mg/L33%
February 2026BOD, 5-day, 20 deg. C, monthly average14 mg/L≤ 10 mg/L40%
February 2026Solids, total suspended, daily maximum72 mg/L≤ 23 mg/L213%
February 2026Solids, total suspended, monthly average49 mg/L≤ 15 mg/L227%
February 2026Solids, total suspended, monthly average60 lb/d≤ 43 lb/d40%
March 2026BOD, 5-day, 20 deg. C, monthly average12 mg/L≤ 10 mg/L20%
March 2026Solids, total suspended, daily maximum41 mg/L≤ 23 mg/L78%
March 2026Solids, total suspended, monthly average30 mg/L≤ 15 mg/L100%
April 2026BOD, 5-day, 20 deg. C, monthly average14 mg/L≤ 10 mg/L40%
April 2026Solids, total suspended, daily maximum49 mg/L≤ 23 mg/L113%
April 2026Solids, total suspended, monthly average48 mg/L≤ 15 mg/L220%
April 2026Solids, total suspended, monthly average55 lb/d≤ 43 lb/d28%
April 2026pH, instantaneous maximum9.61 SU≤ 9 SU—
May 2026BOD, 5-day, 20 deg. C, daily maximum18 mg/L≤ 15 mg/L20%
May 2026BOD, 5-day, 20 deg. C, monthly average18 mg/L≤ 10 mg/L80%
May 2026Coliform, fecal general, daily maximum480 #/100mL≤ 400 #/100mL20%
May 2026Solids, total suspended, daily maximum54 mg/L≤ 23 mg/L135%
May 2026Solids, total suspended, monthly average54 mg/L≤ 15 mg/L260%
May 2026pH, instantaneous maximum9.95 SU≤ 9 SU—
June 2026Solids, total suspended, monthly average22 mg/L≤ 15 mg/L47%
June 2026Solids, total suspended, monthly average63 lb/d≤ 43 lb/d47%

Limits in force (32)

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
BOD, 5-day, 20 deg. Cmonthly average≤ 29 lb/dall year
BOD, 5-day, 20 deg. Cmonthly average≤ 29 lb/dall 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
Solids, total suspendedmonthly average≤ 43 lb/dall year
Solids, total suspendedmonthly average≤ 43 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 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
Chlorine, total residualinstantaneous maximum≤ .033 mg/Lall year
Chlorine, total residualinstantaneous maximum≤ .033 mg/Lall 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.

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/LA0081809 · MCP: https://passage-data.com/mcp