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Sterlington, Town of

Sewage treatment plant, Sterlington, Louisiana. NPDES permit LA0046809, in force until Nov 30, 2027. Last 12 months: over a limit 39 times (last June 2026), 30 required values missing, 7 of 12 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
Jun 3, 2027 · 180 days before expiry; your permit may set another date
Last report on file
June 2026
Oct 2024 – Sep 2025
20 values over a limit, 0 required values missing, 1 of 16 reports late

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

All 39 values over a limit
Period endingParameterReportedLimitOver by
November 2025BOD, 5-day, 20 deg. C, monthly average40.4 lb/d≤ 38 lb/d6%
December 2025Solids, total suspended, monthly average30.5 mg/L≤ 30 mg/L2%
February 2026Coliform, fecal general, monthly geometric mean> 38055 #/100mL≤ 200 #/100mL—
February 2026Coliform, fecal general, monthly geometric mean> 38055 #/100mL≤ 200 #/100mL—
February 2026Coliform, fecal general, weekly geometric mean> 43100 #/100mL≤ 400 #/100mL—
February 2026Coliform, fecal general, weekly geometric mean> 43100 #/100mL≤ 400 #/100mL—
February 2026Solids, total suspended, monthly average44 mg/L≤ 30 mg/L47%
February 2026Solids, total suspended, monthly average44 mg/L≤ 30 mg/L47%
February 2026Solids, total suspended, weekly average64 mg/L≤ 45 mg/L42%
February 2026Solids, total suspended, weekly average64 mg/L≤ 45 mg/L42%
March 2026BOD, 5-day, 20 deg. C, monthly average161 lb/d≤ 38 lb/d324%
March 2026BOD, 5-day, 20 deg. C, monthly average161 lb/d≤ 38 lb/d324%
March 2026Coliform, fecal general, monthly geometric mean1235 #/100mL≤ 200 #/100mL518%
March 2026Coliform, fecal general, monthly geometric mean1235 #/100mL≤ 200 #/100mL518%
March 2026Coliform, fecal general, weekly geometric mean> 218000 #/100mL≤ 400 #/100mL—
March 2026Coliform, fecal general, weekly geometric mean> 218000 #/100mL≤ 400 #/100mL—
March 2026Solids, total suspended, monthly average185 lb/d≤ 94 lb/d97%
March 2026Solids, total suspended, monthly average185 lb/d≤ 94 lb/d97%
March 2026Solids, total suspended, monthly average33.3 mg/L≤ 30 mg/L11%
March 2026Solids, total suspended, monthly average33.3 mg/L≤ 30 mg/L11%
March 2026pH, instantaneous minimum.11 SU≥ 6 SU—
April 2026BOD, 5-day, 20 deg. C, monthly average134 lb/d≤ 38 lb/d253%
April 2026Coliform, fecal general, monthly geometric mean> 17800 #/100mL≤ 200 #/100mL—
April 2026Coliform, fecal general, weekly geometric mean> 17800 #/100mL≤ 400 #/100mL—
April 2026Solids, total suspended, monthly average328 lb/d≤ 94 lb/d249%
April 2026Solids, total suspended, monthly average62 mg/L≤ 30 mg/L107%
April 2026Solids, total suspended, weekly average62 mg/L≤ 45 mg/L38%
May 2026BOD, 5-day, 20 deg. C, monthly average236 lb/d≤ 38 lb/d521%
May 2026BOD, 5-day, 20 deg. C, monthly average39.9 mg/L≤ 30 mg/L33%
May 2026BOD, 5-day, 20 deg. C, weekly average58.7 mg/L≤ 45 mg/L30%
May 2026Coliform, fecal general, monthly geometric mean11054 #/100mL≤ 200 #/100mL5427%
May 2026Coliform, fecal general, weekly geometric mean29800 #/100mL≤ 400 #/100mL7350%
May 2026Solids, total suspended, monthly average488 lb/d≤ 94 lb/d419%
May 2026Solids, total suspended, monthly average82.5 mg/L≤ 30 mg/L175%
May 2026Solids, total suspended, weekly average106 mg/L≤ 45 mg/L136%
June 2026BOD, 5-day, 20 deg. C, monthly average90.1 lb/d≤ 38 lb/d137%
June 2026Coliform, fecal general, monthly geometric mean4658 #/100mL≤ 200 #/100mL2229%
June 2026Coliform, fecal general, weekly geometric mean7000 #/100mL≤ 400 #/100mL1650%
June 2026Solids, total suspended, monthly average98.4 lb/d≤ 94 lb/d5%

Limits in force (30)

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
BOD, 5-day, 20 deg. Cmonthly average≤ 38 lb/dall year
BOD, 5-day, 20 deg. Cmonthly average≤ 38 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≤ 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≤ 94 lb/dall year
Solids, total suspendedmonthly average≤ 94 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.

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On EPA ECHO: Facility report · DMR history

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