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National Water Infrastructure LLC - Pelican Crossing Wastewater Treatment Pond

Sewerage Systems, Gonzales, Louisiana. NPDES permit LA0124958 expired Sep 22, 2026; its limits still apply. Last 12 months: over a limit 14 times (last February 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 89 days after each period: form A quarterly, form Q quarterly, form Y yearly
Last report on file
June 2026
Oct 2024 – Sep 2025
65 values over a limit, 0 required values missing, 1 of 17 reports late

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

All 14 values over a limit
Period endingParameterReportedLimitOver by
October 2025BOD, carbonaceous [5 day, 20 C], daily maximum23 mg/L≤ 15 mg/L53%
October 2025BOD, carbonaceous [5 day, 20 C], monthly average17 mg/L≤ 10 mg/L70%
November 2025Chlorine, total residual, instantaneous maximum3 mg/L≤ .033 mg/L8991%
December 2025BOD, carbonaceous [5 day, 20 C], daily maximum17 mg/L≤ 15 mg/L13%
December 2025BOD, carbonaceous [5 day, 20 C], monthly average13 mg/L≤ 10 mg/L30%
December 2025Coliform, fecal general, daily maximum512 #/100mL≤ 400 #/100mL28%
January 2026BOD, carbonaceous [5 day, 20 C], daily maximum30 mg/L≤ 15 mg/L100%
January 2026BOD, carbonaceous [5 day, 20 C], monthly average20 mg/L≤ 10 mg/L100%
January 2026Solids, total suspended, daily maximum25 mg/L≤ 23 mg/L9%
January 2026Solids, total suspended, monthly average17 mg/L≤ 15 mg/L13%
February 2026BOD, carbonaceous [5 day, 20 C], daily maximum36 mg/L≤ 15 mg/L140%
February 2026BOD, carbonaceous [5 day, 20 C], monthly average23 mg/L≤ 10 mg/L130%
February 2026Solids, total suspended, daily maximum45 mg/L≤ 23 mg/L96%
February 2026Solids, total suspended, monthly average26 mg/L≤ 15 mg/L73%

Limits in force (25)

ParameterStatisticLimitMonths
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 15 mg/Lall year
Solids, total suspendeddaily maximum≤ 23 mg/Lall year
Solids, total suspendedmonthly average≤ 57.5 lb/dall 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≤ 3.3 mg/Lall year
Nitrogen, ammonia total [as N]daily maximum≤ 8 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 12.9 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 plantdaily maximumreport only (MGD)all year
Chlorine, total residualinstantaneous maximum≤ .033 mg/Lall year
Mercury, total [as Hg]monthly averagereport only (mg/L)all year
Mercury, total [as Hg]daily maximumreport only (mg/L)all year
Mercury, total [as Hg]monthly averagereport only (lb/d)all year
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal generaldaily maximum≤ 400 #/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 15 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 38.4 lb/dall 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/LA0124958 · MCP: https://passage-data.com/mcp