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Town of Sibley

Sewage treatment plant, Sibley, Louisiana. NPDES permit LA0075396, in force until Aug 31, 2028. Last 12 months: over a limit 24 times (last June 2026), 64 required values missing, 6 of 13 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form Q quarterly (6 values), form A quarterly, form Y yearly
Renewal application due
Mar 4, 2028 · 180 days before expiry; your permit may set another date
Last report on file
June 2026
Oct 2024 – Sep 2025
4 values over a limit, 0 required values missing, 1 of 17 reports late

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

All 24 values over a limit
Period endingParameterReportedLimitOver by
November 2025Coliform, fecal general, monthly geometric mean658 #/100mL≤ 200 #/100mL229%
November 2025Coliform, fecal general, weekly geometric mean756 #/100mL≤ 400 #/100mL89%
January 2026Coliform, fecal general, monthly geometric mean1020 #/100mL≤ 200 #/100mL410%
January 2026Coliform, fecal general, monthly geometric mean1020 #/100mL≤ 200 #/100mL410%
January 2026Coliform, fecal general, weekly geometric mean1020 #/100mL≤ 400 #/100mL155%
January 2026Coliform, fecal general, weekly geometric mean1020 #/100mL≤ 400 #/100mL155%
February 2026Coliform, fecal general, monthly geometric mean> 1600 #/100mL≤ 200 #/100mL—
February 2026Coliform, fecal general, monthly geometric mean> 1600 #/100mL≤ 200 #/100mL—
February 2026Coliform, fecal general, weekly geometric mean> 1600 #/100mL≤ 400 #/100mL—
February 2026Coliform, fecal general, weekly geometric mean> 1600 #/100mL≤ 400 #/100mL—
March 2026Coliform, fecal general, monthly geometric mean1134 #/100mL≤ 200 #/100mL467%
March 2026Coliform, fecal general, weekly geometric mean> 1600 #/100mL≤ 400 #/100mL—
April 2026Coliform, fecal general, monthly geometric mean1352 #/100mL≤ 200 #/100mL576%
April 2026Coliform, fecal general, weekly geometric mean> 1600 #/100mL≤ 400 #/100mL—
May 2026Coliform, fecal general, monthly geometric mean> 1600 #/100mL≤ 200 #/100mL—
May 2026Coliform, fecal general, monthly geometric mean> 1600 #/100mL≤ 200 #/100mL—
May 2026Coliform, fecal general, weekly geometric mean> 1600 #/100mL≤ 400 #/100mL—
May 2026Coliform, fecal general, weekly geometric mean> 1600 #/100mL≤ 400 #/100mL—
May 2026Solids, total suspended, monthly average22.6 mg/L≤ 15 mg/L51%
May 2026Solids, total suspended, monthly average22.6 mg/L≤ 15 mg/L51%
June 2026Coliform, fecal general, weekly geometric mean> 1600 #/100mL≤ 400 #/100mL—
June 2026Coliform, fecal general, weekly geometric mean> 1600 #/100mL≤ 400 #/100mL—
June 2026Solids, total suspended, monthly average18.4 mg/L≤ 15 mg/L23%
June 2026Solids, total suspended, monthly average18.4 mg/L≤ 15 mg/L23%

Limits in force (46)

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≤ 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≤ 25 lb/dall year
Solids, total suspendedmonthly average≤ 25 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 averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly averagereport only (lb/d)all year
Nitrogen, ammonia 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
Chlorine, total residualinstantaneous maximum≤ .033 mg/Lall year
Chlorine, total residualinstantaneous maximum≤ .033 mg/Lall year
Mercury, total [as Hg]monthly averagereport only (mg/L)all year
Mercury, total [as Hg]monthly averagereport only (mg/L)all year
Mercury, total [as Hg]weekly averagereport only (mg/L)all year
Mercury, total [as Hg]weekly averagereport only (mg/L)all year
Mercury, total [as Hg]monthly averagereport only (lb/d)all year
Mercury, total [as Hg]monthly averagereport only (lb/d)all year
Mercury, total [as Hg]weekly averagereport only (lb/d)all year
Mercury, total [as Hg]weekly averagereport only (lb/d)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
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]daily maximum≤ 15 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 15 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 17 lb/dall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 17 lb/dall year

New limits from Sep 1, 2028

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Nitrogen, ammonia total [as N], monthly average2.6 mg/Lnew3.5 mg/L (9 values)1.35×
Nitrogen, ammonia total [as N], daily maximum6.1 mg/Lnew3.56 mg/L (9 values)0.584×
Nitrogen, ammonia total [as N], monthly average4.3 lb/dnew1.66 lb/d (9 values)0.386×

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/LA0075396 · MCP: https://passage-data.com/mcp