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Sewerage District #1 of Tangipahoa Parish

Sewage treatment plant, Hammond, Louisiana. NPDES permit LA0105384 expired Apr 30, 2025; its limits still apply. Last 12 months: over a limit 17 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A quarterly (32 values), form Q quarterly (18 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
17 values over a limit, 0 required values missing, 0 of 16 reports late

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

All 17 values over a limit
Period endingParameterReportedLimitOver by
October 2025Coliform, fecal general, monthly geometric mean251 #/100mL≤ 200 #/100mL26%
October 2025Coliform, fecal general, weekly geometric mean1990 #/100mL≤ 400 #/100mL398%
October 2025Solids, total suspended, weekly average27 mg/L≤ 23 mg/L17%
November 2025Coliform, fecal general, monthly geometric mean864 #/100mL≤ 200 #/100mL332%
November 2025Coliform, fecal general, weekly geometric mean2420 #/100mL≤ 400 #/100mL505%
December 2025Coliform, fecal general, weekly geometric mean1300 #/100mL≤ 400 #/100mL225%
December 2025Nitrogen, ammonia total [as N], weekly average18.9 mg/L≤ 10 mg/L89%
April 2026Coliform, fecal general, weekly geometric mean2419 #/100mL≤ 400 #/100mL505%
April 2026Nitrogen, ammonia total [as N], weekly average10.4 mg/L≤ 10 mg/L4%
May 2026BOD, carbonaceous [5 day, 20 C], monthly average43.44 lb/d≤ 38 lb/d14%
May 2026Coliform, fecal general, weekly geometric mean2419 #/100mL≤ 400 #/100mL505%
May 2026Nitrogen, ammonia total [as N], weekly average10.8 mg/L≤ 10 mg/L8%
May 2026Solids, total suspended, monthly average90.8 lb/d≤ 77 lb/d18%
June 2026BOD, carbonaceous [5 day, 20 C], monthly average167.2 lb/d≤ 38 lb/d340%
June 2026BOD, carbonaceous [5 day, 20 C], weekly average20 mg/L≤ 15 mg/L33%
June 2026Coliform, fecal general, weekly geometric mean2419 #/100mL≤ 400 #/100mL505%
June 2026Solids, total suspended, monthly average136.53 lb/d≤ 77 lb/d77%

Limits in force (50)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly average minimum≥ 5 mg/Lall year
Oxygen, dissolved [DO]monthly average minimum≥ 5 mg/Lall 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≤ 77 lb/dall year
Solids, total suspendedmonthly average≤ 77 lb/dall year
Nitrogen, total [as N]monthly 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]weekly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (lb/d)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≤ 30 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 30 lb/dall year
Phosphorus, total [as P]monthly averagereport only (mg/L)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]weekly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (lb/d)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
Solids, total dissolved [TDS]monthly average≤ 307 mg/Lall year
Solids, total dissolved [TDS]monthly average≤ 307 mg/Lall year
Solids, total dissolved [TDS]weekly average≤ 730 mg/Lall year
Solids, total dissolved [TDS]weekly average≤ 730 mg/Lall year
Solids, total dissolved [TDS]monthly average≤ 1581 lb/CFS/dall year
Solids, total dissolved [TDS]monthly average≤ 1581 lb/CFS/dall 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≤ 38 lb/dall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 38 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/LA0105384 · MCP: https://passage-data.com/mcp