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City of Westwego- Wastewater Treatment Plant

Sewage treatment plant, major discharger, Westwego, Louisiana. NPDES permit LA0038059, in force until Dec 14, 2027. Last 12 months: over a limit 26 times (last September 2026), 1 of 19 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (12 values), form Q quarterly (6 values), form DA yearly, form PI yearly, form S twice a year
Renewal application due
Jun 17, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
19 values over a limit, 0 required values missing, 3 of 20 reports late

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

All 26 values over a limit
Period endingParameterReportedLimitOver by
October 2025Coliform, fecal general, monthly geometric mean935.22 #/100mL≤ 200 #/100mL368%
November 2025BOD, 5-day, 20 deg. C, monthly average54 mg/L≤ 30 mg/L80%
November 2025Coliform, fecal general, monthly geometric mean789 #/100mL≤ 200 #/100mL295%
November 2025Coliform, fecal general, weekly geometric mean1263 #/100mL≤ 400 #/100mL216%
December 2025BOD, 5-day, 20 deg. C, weekly average48 mg/L≤ 45 mg/L7%
December 2025Coliform, fecal general, monthly geometric mean973 #/100mL≤ 200 #/100mL387%
February 2026BOD, 5-day, 20 deg. C, monthly average50 mg/L≤ 30 mg/L67%
February 2026BOD, 5-day, 20 deg. C, weekly average80 mg/L≤ 45 mg/L78%
February 2026Coliform, fecal general, monthly geometric mean734 #/100mL≤ 200 #/100mL267%
March 2026BOD, 5-day, 20 deg. C, monthly average53.5 mg/L≤ 30 mg/L78%
March 2026BOD, 5-day, 20 deg. C, weekly average85.6 mg/L≤ 45 mg/L90%
March 2026Coliform, fecal general, monthly geometric mean939 #/100mL≤ 200 #/100mL370%
March 2026Solids, total suspended, monthly average62 mg/L≤ 30 mg/L107%
March 2026Solids, total suspended, weekly average99.21 mg/L≤ 45 mg/L120%
April 2026BOD, 5-day, 20 deg. C, monthly average37.3 mg/L≤ 30 mg/L24%
April 2026BOD, 5-day, 20 deg. C, weekly average59.8 mg/L≤ 45 mg/L33%
April 2026Solids, total suspended, monthly average49.6 mg/L≤ 30 mg/L65%
April 2026Solids, total suspended, weekly average79.4 mg/L≤ 45 mg/L76%
May 2026Solids, total suspended, monthly average44.8 mg/L≤ 30 mg/L49%
June 2026Solids, total suspended, weekly average51.2 mg/L≤ 45 mg/L14%
July 2026Solids, total suspended, monthly average38.2 mg/L≤ 30 mg/L27%
July 2026Solids, total suspended, weekly average61.2 mg/L≤ 45 mg/L36%
August 2026BOD, 5-day, 20 deg. C, monthly average55 mg/L≤ 30 mg/L83%
August 2026Solids, total suspended, monthly average56 mg/L≤ 30 mg/L87%
September 2026Solids, total suspended, monthly average53.7 mg/L≤ 30 mg/L79%
September 2026Solids, total suspended, weekly average86 mg/L≤ 45 mg/L91%

Limits in force (41)

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≤ 750 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≤ 750 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
Whole effluent toxicity - retest #148-hour minimumreport only (pass=0;fail=1)all year
Whole effluent toxicity - retest #148-hour minimumreport only (pass=0;fail=1)all year
Whole effluent toxicity - retest #1monthly average minimumreport only (pass=0;fail=1)all year
Whole effluent toxicity - retest #1monthly average minimumreport only (pass=0;fail=1)all year
Whole effluent toxicity - retest #248-hour minimumreport only (pass=0;fail=1)all year
Whole effluent toxicity - retest #248-hour minimumreport only (pass=0;fail=1)all year
Whole effluent toxicity - retest #2monthly average minimumreport only (pass=0;fail=1)all year
Whole effluent toxicity - retest #2monthly average minimumreport only (pass=0;fail=1)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
Priority pollutants scan [yes/no]minimum≥ 1 N=0;Y=1all year
Whole Effluent Toxicity - Retest #348-hour minimumreport only (pass=0;fail=1)all year
Whole Effluent Toxicity - Retest #348-hour minimumreport only (pass=0;fail=1)all year
Whole Effluent Toxicity - Retest #3monthly average minimumreport only (pass=0;fail=1)all year
Whole Effluent Toxicity - Retest #3monthly average minimumreport only (pass=0;fail=1)all 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. pulexmaximumreport only (%)all year
Coef Of Var Static Renewal 48Hr Acute Pimephales promelasmaximumreport only (%)all year

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

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Your permit document is the final word. As JSON: /api/v1/permits/LA0038059 · MCP: https://passage-data.com/mcp