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ST Joseph, Town of

Sewage treatment plant, Saint Joseph, Louisiana. NPDES permit LA0043621 expired Jul 31, 2026; its limits still apply. Last 12 months: over a limit 16 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A quarterly (32 values), form Q quarterly (6 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
14 values over a limit, 0 required values missing, 3 of 16 reports late

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

All 16 values over a limit
Period endingParameterReportedLimitOver by
October 2025Chlorine, total residual, instantaneous maximum.16 mg/L≤ .033 mg/L385%
November 2025Chlorine, total residual, instantaneous maximum.35 mg/L≤ .033 mg/L961%
November 2025Coliform, fecal general, weekly geometric mean750 #/100mL≤ 400 #/100mL88%
December 2025Chlorine, total residual, instantaneous maximum.16 mg/L≤ .033 mg/L385%
January 2026Chlorine, total residual, instantaneous maximum.15 mg/L≤ .033 mg/L355%
February 2026Chlorine, total residual, instantaneous maximum.2 mg/L≤ .033 mg/L506%
March 2026Chlorine, total residual, instantaneous maximum.2 mg/L≤ .033 mg/L506%
March 2026Coliform, fecal general, weekly geometric mean530 #/100mL≤ 400 #/100mL33%
March 2026Solids, total suspended, monthly average31.02 mg/L≤ 30 mg/L3%
March 2026Solids, total suspended, monthly average71.53 lb/d≤ 58 lb/d23%
March 2026Solids, total suspended, weekly average56 mg/L≤ 45 mg/L24%
April 2026Chlorine, total residual, instantaneous maximum.2 mg/L≤ .033 mg/L506%
April 2026Solids, total suspended, weekly average47 mg/L≤ 45 mg/L4%
May 2026Chlorine, total residual, instantaneous maximum.2 mg/L≤ .033 mg/L506%
July 2026Chlorine, total residual, instantaneous maximum.05 mg/L≤ .033 mg/L52%
August 2026Chlorine, total residual, instantaneous maximum.08 mg/L≤ .033 mg/L142%

Limits in force (38)

ParameterStatisticLimitMonths
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 58 lb/dall year
Solids, total suspendedmonthly average≤ 58 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
Nitrogen, ammonia total [as N]monthly average≤ 5 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 5 mg/Lall year
Nitrogen, ammonia total [as N]weekly average≤ 10 mg/Lall year
Nitrogen, ammonia total [as N]weekly average≤ 10 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 10 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 10 lb/dall 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
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 generalweekly geometric mean≤ 400 #/100mLall year
Coliform, fecal generalweekly geometric mean≤ 400 #/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/Lall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 19 lb/dall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 19 lb/dall year

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/LA0043621 · MCP: https://passage-data.com/mcp