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Greenwood Town of - STP

Sewage treatment plant, Greenwood, Louisiana. NPDES permit LA0093611, in force until May 31, 2031. Last 12 months: over a limit 36 times (last June 2026), 45 required values missing, 7 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A quarterly, form Q quarterly, form Y yearly
Last report on file
June 2026
Oct 2024 – Sep 2025
57 values over a limit, 0 required values missing, 4 of 16 reports late

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

All 36 values over a limit
Period endingParameterReportedLimitOver by
October 2025Coliform, fecal general, monthly geometric mean275 #/100mL≤ 200 #/100mL38%
October 2025Coliform, fecal general, weekly geometric mean420 #/100mL≤ 400 #/100mL5%
January 2026BOD, 5-day, 20 deg. C, monthly average15.2 mg/L≤ 10 mg/L52%
January 2026BOD, 5-day, 20 deg. C, monthly average15.2 mg/L≤ 10 mg/L52%
January 2026BOD, 5-day, 20 deg. C, monthly average61.6 lb/d≤ 37.5 lb/d64%
January 2026BOD, 5-day, 20 deg. C, monthly average61.6 lb/d≤ 37.5 lb/d64%
January 2026BOD, 5-day, 20 deg. C, weekly average15.2 mg/L≤ 15 mg/L1%
January 2026BOD, 5-day, 20 deg. C, weekly average15.2 mg/L≤ 15 mg/L1%
January 2026Coliform, fecal general, monthly geometric mean564 #/100mL≤ 200 #/100mL182%
January 2026Coliform, fecal general, monthly geometric mean564 #/100mL≤ 200 #/100mL182%
January 2026Coliform, fecal general, weekly geometric mean564 #/100mL≤ 400 #/100mL41%
January 2026Coliform, fecal general, weekly geometric mean564 #/100mL≤ 400 #/100mL41%
January 2026Solids, total suspended, monthly average170 lb/d≤ 56.3 lb/d202%
January 2026Solids, total suspended, monthly average170 lb/d≤ 56.3 lb/d202%
January 2026Solids, total suspended, monthly average42 mg/L≤ 15 mg/L180%
January 2026Solids, total suspended, monthly average42 mg/L≤ 15 mg/L180%
January 2026Solids, total suspended, weekly average42 mg/L≤ 23 mg/L83%
January 2026Solids, total suspended, weekly average42 mg/L≤ 23 mg/L83%
February 2026Solids, total suspended, monthly average137 lb/d≤ 56.3 lb/d143%
February 2026Solids, total suspended, monthly average137 lb/d≤ 56.3 lb/d143%
February 2026Solids, total suspended, monthly average38 mg/L≤ 15 mg/L153%
February 2026Solids, total suspended, monthly average38 mg/L≤ 15 mg/L153%
February 2026Solids, total suspended, weekly average39.5 mg/L≤ 23 mg/L72%
February 2026Solids, total suspended, weekly average39.5 mg/L≤ 23 mg/L72%
March 2026Solids, total suspended, monthly average20.2 mg/L≤ 15 mg/L35%
March 2026Solids, total suspended, monthly average20.2 mg/L≤ 15 mg/L35%
March 2026Solids, total suspended, monthly average61.1 lb/d≤ 56.3 lb/d9%
March 2026Solids, total suspended, monthly average61.1 lb/d≤ 56.3 lb/d9%
May 2026Coliform, fecal general, weekly geometric mean632 #/100mL≤ 400 #/100mL58%
May 2026Solids, total suspended, monthly average61.9 lb/d≤ 56.3 lb/d10%
June 2026BOD, carbonaceous [5 day, 20 C], monthly average< 45.5 lb/d≤ 37.5 lb/d21%
June 2026Coliform, fecal general, weekly geometric mean1510 #/100mL≤ 400 #/100mL278%
June 2026Solids, total suspended, monthly average105 lb/d≤ 56.3 lb/d87%
June 2026Solids, total suspended, monthly average28 mg/L≤ 15 mg/L87%
June 2026Solids, total suspended, weekly average28 mg/L≤ 23 mg/L22%
June 2026pH, instantaneous minimum5.94 SU≥ 6 SU—

Limits in force (44)

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≤ 56.3 lb/dall year
Solids, total suspendedmonthly average≤ 56.3 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedweekly averagereport only (mg/L)all 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
Chlorine, total residualinstantaneous maximumreport only (mg/L)all year
Chlorine, total residualinstantaneous maximumreport only (mg/L)all year
Nitrogen, ammonia [NH3-N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia [NH3-N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia [NH3-N]weekly averagereport only (mg/L)all year
Nitrogen, ammonia [NH3-N]weekly averagereport only (mg/L)all year
Nitrogen, ammonia [NH3-N]monthly averagereport only (lb/d)all year
Nitrogen, ammonia [NH3-N]monthly 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]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≤ 37.5 lb/dall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 37.5 lb/dall year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]weekly averagereport only (mg/L)all year
BOD, carbonaceous, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year

New limits from Jun 2, 2029

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Chlorine, total residual, instantaneous maximum0.033 mg/Lnew——
Nitrogen, ammonia [NH3-N], monthly average0.74 mg/Lnew——
Nitrogen, ammonia [NH3-N], monthly average2.78 lb/dnew——
Nitrogen, ammonia [NH3-N], weekly average3.33 mg/Lnew——

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/LA0093611 · MCP: https://passage-data.com/mcp