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St Tammany Parish Government Department of Utilities - Westwood Regional Wastewa

Sewage treatment plant, Covington, Louisiana. NPDES permit LA0063991, in force until Sep 30, 2028. Last 12 months: over a limit 8 times (last June 2026), 4 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
Renewal application due
Apr 3, 2028 · 180 days before expiry; your permit may set another date
Last report on file
June 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 0 of 16 reports late

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

Period endingParameterReportedLimitOver by
November 2025BOD, carbonaceous [5 day, 20 C], monthly average11 mg/L≤ 10 mg/L10%
January 2026Solids, total suspended, monthly average18 mg/L≤ 15 mg/L20%
January 2026Solids, total suspended, monthly average72 lb/d≤ 69 lb/d4%
April 2026BOD, carbonaceous [5 day, 20 C], monthly average12 mg/L≤ 10 mg/L20%
April 2026BOD, carbonaceous [5 day, 20 C], weekly average19 mg/L≤ 15 mg/L27%
April 2026Oxygen, dissolved [DO], monthly average minimum5.5 mg/L≥ 6 mg/L8%
June 2026BOD, carbonaceous [5 day, 20 C], weekly average16 mg/L≤ 15 mg/L7%
June 2026Oxygen, dissolved [DO], monthly average minimum5.02 mg/L≥ 6 mg/L16%

Limits in force (46)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly average minimum≥ 6 mg/Lall year
Oxygen, dissolved [DO]monthly average minimum≥ 6 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≤ 69 lb/dall year
Solids, total suspendedmonthly average≤ 69 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]daily maximumreport only (mg/L)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≤ 23 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 23 lb/dall year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport 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
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≤ 46 lb/dall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 46 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

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/LA0063991 · MCP: https://passage-data.com/mcp