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White Castle Town of - Mechanical Plant

Sewage treatment plant, White Castle, Louisiana. NPDES permit LA0117030, in force until Sep 30, 2030. Last 12 months: over a limit 18 times (last July 2026), 3 required values missing, 3 of 15 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
Last report on file
August 2026
Oct 2024 – Sep 2025
10 values over a limit, 0 required values missing, 0 of 16 reports late

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

All 18 values over a limit
Period endingParameterReportedLimitOver by
October 2025Coliform, fecal general, monthly geometric mean660 #/100mL≤ 200 #/100mL230%
October 2025Coliform, fecal general, weekly geometric mean660 #/100mL≤ 400 #/100mL65%
November 2025Solids, total suspended, monthly average120.46 lb/d≤ 88 lb/d37%
November 2025Solids, total suspended, monthly average76.83 mg/L≤ 30 mg/L156%
November 2025Solids, total suspended, weekly average163 mg/L≤ 45 mg/L262%
December 2025Coliform, fecal general, weekly geometric mean660 #/100mL≤ 400 #/100mL65%
December 2025Solids, total suspended, monthly average127.77 mg/L≤ 30 mg/L326%
December 2025Solids, total suspended, monthly average311.15 lb/d≤ 88 lb/d254%
December 2025Solids, total suspended, weekly average148 mg/L≤ 45 mg/L229%
January 2026Solids, total suspended, monthly average97.84 lb/d≤ 88 lb/d11%
April 2026BOD, 5-day, 20 deg. C, weekly average46.59 mg/L≤ 45 mg/L4%
May 2026Solids, total suspended, monthly average104.8 mg/L≤ 30 mg/L249%
May 2026Solids, total suspended, monthly average504.29 lb/d≤ 88 lb/d473%
May 2026Solids, total suspended, weekly average125 mg/L≤ 45 mg/L178%
July 2026Coliform, fecal general, weekly geometric mean550 #/100mL≤ 400 #/100mL38%
July 2026Solids, total suspended, monthly average471.53 lb/d≤ 88 lb/d436%
July 2026Solids, total suspended, monthly average99.36 mg/L≤ 30 mg/L231%
July 2026Solids, total suspended, weekly average117 mg/L≤ 45 mg/L160%

Limits in force (24)

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≤ 88 lb/dall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cweekly averagereport only (mg/L)all 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≤ 88 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]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
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantweekly averagereport only (MGD)all year
BOD, percent removal [total]monthly average minimum≥ 85 %all year
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal generalweekly geometric mean≤ 400 #/100mLall 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.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/LA0117030 · MCP: https://passage-data.com/mcp