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Magnolia Water Utility Operating Company LLC - Country Lakes Subdivision Phases

Sewerage Systems, Rayne, Louisiana. NPDES permit LA0124524, in force until Jul 31, 2031. Last 12 months: over a limit 8 times (last May 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A quarterly, outfall 001 form Q quarterly, outfall 101 form A quarterly, outfall 101 form Y yearly, outfall 201 form A quarterly, outfall 201 form Y yearly
Last report on file
July 2026
Oct 2024 – Sep 2025
2 values over a limit, 22 required values missing, 13 of 41 reports late

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

Period endingOutfallParameterReportedLimitOver by
January 2026001BOD, 5-day, 20 deg. C, monthly average20 lb/d≤ 10 lb/d100%
January 2026001Solids, total suspended, monthly average50 lb/d≤ 15 lb/d233%
March 2026101BOD, 5-day, 20 deg. C, daily maximum19 mg/L≤ 15 mg/L27%
March 2026101BOD, 5-day, 20 deg. C, monthly average11 mg/L≤ 10 mg/L10%
March 2026201BOD, 5-day, 20 deg. C, daily maximum16 mg/L≤ 15 mg/L7%
May 2026001Solids, total suspended, monthly average40 lb/d≤ 15 lb/d167%
May 2026201Solids, total suspended, daily maximum41 mg/L≤ 23 mg/L78%
May 2026201Solids, total suspended, monthly average22 mg/L≤ 15 mg/L47%

Limits in force (72)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. Cmonthly average≤ 10 lb/dall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 10 lb/dall year001
pHinstantaneous minimum≥ 6 SUall year001
pHinstantaneous minimum≥ 6 SUall year001
pHinstantaneous maximum≤ 9 SUall year001
pHinstantaneous maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 15 lb/dall year001
Solids, total suspendedmonthly average≤ 15 lb/dall year001
Nitrogen, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, total [as N]monthly averagereport only (lb/d)all year001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]monthly averagereport only (lb/d)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualinstantaneous maximumreport only (mg/L)all year001
Chlorine, total residualinstantaneous maximumreport only (mg/L)all year001
Mercury, total [as Hg]monthly averagereport only (mg/L)all year001
Mercury, total [as Hg]daily maximumreport only (mg/L)all year001
Mercury, total [as Hg]monthly averagereport only (lb/d)all year001
Mercury, total [as Hg]daily maximumreport only (lb/d)all year001
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/Lall year101
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/Lall year101
BOD, 5-day, 20 deg. Cdaily maximum≤ 15 mg/Lall year101
BOD, 5-day, 20 deg. Cdaily maximum≤ 15 mg/Lall year101
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year101
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year101
Solids, total suspendedmonthly average≤ 15 mg/Lall year101
Solids, total suspendedmonthly average≤ 15 mg/Lall year101
Solids, total suspendeddaily maximum≤ 23 mg/Lall year101
Solids, total suspendeddaily maximum≤ 23 mg/Lall year101
Solids, total suspendedmonthly averagereport only (mg/L)all year101
Solids, total suspendeddaily maximumreport only (mg/L)all year101
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year101
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year101
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year101
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year101
Chlorine, total residualinstantaneous maximumreport only (mg/L)all year101
Chlorine, total residualinstantaneous maximumreport only (mg/L)all year101
BOD, percent removal [total]monthly average minimum≥ 85 %all year101
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year101
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year101
Coliform, fecal generaldaily maximum≤ 400 #/100mLall year101
Coliform, fecal generaldaily maximum≤ 400 #/100mLall year101
Solids, suspended percent removalmonthly average minimum≥ 85 %all year101
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/Lall year201
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/Lall year201
BOD, 5-day, 20 deg. Cdaily maximum≤ 15 mg/Lall year201
BOD, 5-day, 20 deg. Cdaily maximum≤ 15 mg/Lall year201
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year201
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year201
Solids, total suspendedmonthly average≤ 15 mg/Lall year201
Solids, total suspendedmonthly average≤ 15 mg/Lall year201
Solids, total suspendeddaily maximum≤ 23 mg/Lall year201
Solids, total suspendeddaily maximum≤ 23 mg/Lall year201
Solids, total suspendedmonthly averagereport only (mg/L)all year201
Solids, total suspendeddaily maximumreport only (mg/L)all year201
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year201
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year201
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year201
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year201
Chlorine, total residualinstantaneous maximumreport only (mg/L)all year201
Chlorine, total residualinstantaneous maximumreport only (mg/L)all year201
BOD, percent removal [total]monthly average minimum≥ 85 %all year201
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year201
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year201
Coliform, fecal generaldaily maximum≤ 400 #/100mLall year201
Coliform, fecal generaldaily maximum≤ 400 #/100mLall year201
Solids, suspended percent removalmonthly average minimum≥ 85 %all year201

New limits from Aug 1, 2029

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Chlorine, total residual, instantaneous maximum outfall 0010.033 mg/Lnew——
Mercury, total [as Hg], daily maximum outfall 0010.00006 lb/dnew——
Mercury, total [as Hg], monthly average outfall 0010.00003 lb/dnew——
Chlorine, total residual, instantaneous maximum outfall 1010.033 mg/Lnew——
Chlorine, total residual, instantaneous maximum outfall 2010.033 mg/Lnew——

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/LA0124524 · MCP: https://passage-data.com/mcp