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Town of Mangham

Sewage treatment plant, Mangham, Louisiana. NPDES permit LA0032115, in force until Apr 30, 2029. Last 12 months: over a limit 7 times (last June 2026), 1 of 13 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A quarterly (22 values), form Q quarterly (4 values)
Last report on file
July 2026
Oct 2024 – Sep 2025
14 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
October 2025Coliform, fecal general, monthly average1000 #/100mL≤ 200 #/100mL400%
October 2025Coliform, fecal general, weekly average1000 #/100mL≤ 400 #/100mL150%
January 2026Coliform, fecal general, monthly average2000 #/100mL≤ 200 #/100mL900%
January 2026Coliform, fecal general, weekly average2000 #/100mL≤ 400 #/100mL400%
March 2026Coliform, fecal general, monthly average238 #/100mL≤ 200 #/100mL19%
June 2026Coliform, fecal general, monthly average800 #/100mL≤ 200 #/100mL300%
June 2026Coliform, fecal general, weekly average800 #/100mL≤ 400 #/100mL100%

Limits in force (26)

ParameterStatisticLimitMonths
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 45 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≤ 90 mg/Lall year
Solids, total suspendedmonthly average≤ 90 mg/Lall year
Solids, total suspendedweekly average≤ 135 mg/Lall year
Solids, total suspendedweekly average≤ 135 mg/Lall year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]weekly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]weekly averagereport 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 residualinstantaneous maximumreport only (mg/L)all year
Chlorine, total residualinstantaneous maximumreport only (mg/L)all year
Coliform, fecal generalmonthly average≤ 200 #/100mLall year
Coliform, fecal generalmonthly average≤ 200 #/100mLall year
Coliform, fecal generalweekly average≤ 400 #/100mLall year
Coliform, fecal generalweekly average≤ 400 #/100mLall year

New limits from May 1, 2027

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Chlorine, total residual, instantaneous maximum0.033 mg/Lnew0.03 mg/L (10 values)0.909×

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/LA0032115 · MCP: https://passage-data.com/mcp