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Village of South Mansfield- South Mansfield WWTP

Sewage treatment plant, South Mansfield, Louisiana. NPDES permit LA0066613, in force until Sep 14, 2028. Last 12 months: over a limit 9 times (last August 2026), 12 required values missing, 5 of 15 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form Q quarterly (6 values), form A quarterly
Renewal application due
Mar 18, 2028 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
20 values over a limit, 150 required values missing, 16 of 16 reports late

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

Period endingParameterReportedLimitOver by
December 2025Solids, total suspended, monthly average17≤ 15 mg/L13%
March 2026Solids, total suspended, monthly average21.6≤ 15 mg/L44%
March 2026Solids, total suspended, weekly average39.1≤ 23 mg/L70%
May 2026Solids, total suspended, monthly average19.8≤ 15 mg/L32%
June 2026Coliform, fecal general, weekly geometric mean980≤ 400 #/100mL145%
July 2026Coliform, fecal general, monthly geometric mean345≤ 200 #/100mL73%
July 2026Coliform, fecal general, weekly geometric mean744≤ 400 #/100mL86%
July 2026Solids, total suspended, monthly average17.4≤ 15 mg/L16%
August 2026Solids, total suspended, monthly average15.8≤ 15 mg/L5%

Limits in force (30)

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. Cweekly average≤ 15 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 15 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 10 lb/dall year
BOD, 5-day, 20 deg. Cmonthly average≤ 10 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 suspendedweekly average≤ 23 mg/Lall year
Solids, total suspendedweekly average≤ 23 mg/Lall year
Solids, total suspendedmonthly average≤ 16 lb/dall year
Solids, total suspendedmonthly average≤ 16 lb/dall year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]weekly averagereport 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]weekly averagereport 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 plantweekly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantweekly averagereport only (MGD)all year
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal generalweekly geometric mean≤ 400 #/100mLall year
Coliform, fecal generalweekly geometric mean≤ 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/LA0066613 · MCP: https://passage-data.com/mcp