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Magnolia Water Utilities Operating Company LLC - Olde Oaks Sewer Treatment Plant

Sewerage Systems, Haughton, Louisiana. NPDES permit LA0120669, in force until Feb 28, 2031. Last 12 months: over a limit 2 times (last March 2026), 10 required values missing. Source: EPA ECHO, Oct 22, 2026.

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

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

Period endingParameterReportedLimitOver by
March 2026Solids, total suspended, daily maximum37 mg/L≤ 30 mg/L23%
March 2026Solids, total suspended, monthly average32 mg/L≤ 20 mg/L60%

Limits in force (44)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly average minimum≥ 2 mg/Lall year
Oxygen, dissolved [DO]monthly average minimum≥ 2 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/LMay–Oct
Solids, total suspendedmonthly average≤ 15 mg/LMay–Oct
Solids, total suspendedmonthly average≤ 20 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly average≤ 20 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendeddaily maximum≤ 23 mg/LMay–Oct
Solids, total suspendeddaily maximum≤ 23 mg/LMay–Oct
Solids, total suspendeddaily maximum≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendeddaily maximum≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly average≤ 15 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 15 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 10 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 10 mg/LMay–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 20 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 20 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 15 mg/LMay–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 15 mg/LMay–Oct
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
Chlorine, total residualdaily maximumreport only (mg/L)all year
Chlorine, total residualdaily maximumreport only (mg/L)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
BOD, carbonaceous [5 day, 20 C]monthly average≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 45 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 45 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 30 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 30 mg/LMay–Oct

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/LA0120669 · MCP: https://passage-data.com/mcp