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City of Hammond- South Slough Wetland Wastewater Assimilation Project

Sewage treatment plant, major discharger, Hammond, Louisiana. NPDES permit LA0032328, in force until Aug 14, 2028. Last 12 months: over a limit 10 times (last September 2026), 5 of 43 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form C monthly (21 values), form DA monthly (8 values), form PI monthly (8 values), form Q quarterly (6 values), form S twice a year, form Y yearly
Renewal application due
Feb 16, 2028 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
6 values over a limit, 3 required values missing, 3 of 43 reports late

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

Period endingParameterReportedLimitOver by
December 2025Coliform, fecal general, weekly geometric mean439 #/100mL≤ 400 #/100mL10%
January 2026Coliform, fecal general, monthly geometric mean745 #/100mL≤ 200 #/100mL273%
January 2026Coliform, fecal general, weekly geometric mean2684 #/100mL≤ 400 #/100mL571%
February 2026Coliform, fecal general, monthly geometric mean273 #/100mL≤ 200 #/100mL37%
February 2026Coliform, fecal general, weekly geometric mean576 #/100mL≤ 400 #/100mL44%
May 2026BOD, 5-day, 20 deg. C, monthly average2027 lb/d≤ 2002 lb/d1%
August 2026Solids, total suspended, monthly average2015 lb/d≤ 2002 lb/d1%
August 2026Solids, total suspended, monthly average33.2 mg/L≤ 30 mg/L11%
August 2026Solids, total suspended, weekly average53 mg/L≤ 45 mg/L18%
September 2026Solids, total suspended, monthly average2468 lb/d≤ 2002 lb/d23%

Limits in force (68)

ParameterStatisticLimitMonths
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. Cmonthly average≤ 2002 lb/dall year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 2002 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
Arsenic, total [as As]monthly averagereport only (mg/L)all year
Arsenic, total [as As]weekly averagereport only (mg/L)all year
Arsenic, total [as As]monthly averagereport only (lb/d)all year
Cadmium, total [as Cd]monthly averagereport only (mg/L)all year
Cadmium, total [as Cd]weekly averagereport only (mg/L)all year
Cadmium, total [as Cd]monthly averagereport only (lb/d)all year
Chromium, total [as Cr]monthly averagereport only (mg/L)all year
Chromium, total [as Cr]weekly averagereport only (mg/L)all year
Chromium, total [as Cr]monthly averagereport only (lb/d)all year
Copper, total [as Cu]monthly averagereport only (mg/L)all year
Copper, total [as Cu]weekly averagereport only (mg/L)all year
Copper, total [as Cu]monthly average≤ 1.55 lb/dall year
Copper, total [as Cu]weekly average≤ 3.67 lb/dall year
Lead, total [as Pb]monthly averagereport only (mg/L)all year
Lead, total [as Pb]weekly averagereport only (mg/L)all year
Lead, total [as Pb]monthly averagereport only (lb/d)all year
Nickel, total [as Ni]monthly averagereport only (mg/L)all year
Nickel, total [as Ni]weekly averagereport only (mg/L)all year
Nickel, total [as Ni]monthly averagereport only (lb/d)all year
Silver, total [as Ag]monthly averagereport only (mg/L)all year
Silver, total [as Ag]weekly averagereport only (mg/L)all year
Silver, total [as Ag]monthly averagereport only (lb/d)all year
Zinc, total [as Zn]monthly averagereport only (mg/L)all year
Zinc, total [as Zn]weekly averagereport only (mg/L)all year
Zinc, total [as Zn]monthly averagereport only (lb/d)all year
Selenium, total [as Se]monthly averagereport only (mg/L)all year
Selenium, total [as Se]weekly averagereport only (mg/L)all year
Selenium, total [as Se]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 plantweekly averagereport only (MGD)all year
Chlorine, total residualdaily maximum< .033 mg/Lall year
Whole Effluent Toxicity [WET] - D. pulex48-hour minimum≥ 100 %all year
Whole Effluent Toxicity [WET] - D. pulexmonthly average minimum≥ 100 %all year
Whole Effluent Toxicity [WET] - P. promelas48-hour minimum≥ 100 %all year
Whole Effluent Toxicity [WET] - P. promelasmonthly average minimum≥ 100 %all year
Wetlands Monitoringminimum≥ 1 N=0;Y=1all 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]monthly average≤ .002 lb/dall year
Mercury, total [as Hg]weekly average≤ .004 lb/dall year
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal generalweekly geometric mean≤ 400 #/100mLall year
Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex48-hour minimumreport only (pass=0;fail=1)all year
Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulexmonthly average minimumreport only (pass=0;fail=1)all year
LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas48-hour minimumreport only (pass=0;fail=1)all year
LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelasmonthly average minimumreport only (pass=0;fail=1)all year
NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex48-hour minimumreport only (%)all year
NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulexmonthly average minimumreport only (%)all year
NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas48-hour minimumreport only (%)all year
NOAEC Lethal Static Renewal 48Hr acute Pimephales promelasmonthly average minimumreport only (%)all year
Coef Of Var Static Renewal 48Hr Acute D. pulex48-hour minimumreport only (%)all year
Coef Of Var Static Renewal 48Hr Acute D. pulexmonthly average minimumreport only (%)all year
Coef Of Var Static Renewal 48Hr Acute Pimephales promelas48-hour minimumreport only (%)all year
Coef Of Var Static Renewal 48Hr Acute Pimephales promelasmonthly average minimumreport only (%)all year

How strict are these limits?

Cited limits by parameter: Louisiana's rules and the federal ones.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/LA0032328 · MCP: https://passage-data.com/mcp