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Chitimacha Tribe of Louisiana-

Sewage treatment plant, Charenton, Louisiana. NPDES permit LA0050971, in force until Feb 28, 2027. Last 12 months: over a limit 4 times (last December 2025), 8 of 10 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A quarterly (46 values)
Renewal application due
Sep 1, 2026 · 180 days before expiry; your permit may set another date
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 10 of 13 reports late

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

Period endingParameterReportedLimitOver by
December 2025BOD, 5-day, 20 deg. C, 30-day average26 mg/L≤ 10 mg/L160%
December 2025BOD, 5-day, 20 deg. C, 7-day average32 lb/d≤ 27 lb/d19%
December 2025BOD, 5-day, 20 deg. C, 7-day average49 mg/L≤ 15 mg/L227%
December 2025BOD, 5-day, percent removal, monthly average minimum81 %≥ 85 %27%

Limits in force (46)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheit30-day averagereport only (deg F)all year
Temperature, water deg. fahrenheit30-day averagereport only (deg F)all year
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
Oxygen, dissolved [DO]30-day averagereport only (mg/L)all year
Oxygen, dissolved [DO]30-day averagereport only (mg/L)all year
Oxygen, dissolved [DO]daily maximumreport only (mg/L)all year
Oxygen, dissolved [DO]daily maximumreport only (mg/L)all year
BOD, 5-day, 20 deg. C30-day average≤ 10 mg/Lall year
BOD, 5-day, 20 deg. C30-day average≤ 10 mg/Lall year
BOD, 5-day, 20 deg. C7-day average≤ 15 mg/Lall year
BOD, 5-day, 20 deg. C7-day average≤ 15 mg/Lall year
BOD, 5-day, 20 deg. C30-day average≤ 18 lb/dall year
BOD, 5-day, 20 deg. C30-day average≤ 18 lb/dall year
BOD, 5-day, 20 deg. C7-day average≤ 27 lb/dall year
BOD, 5-day, 20 deg. C7-day average≤ 27 lb/dall year
pHminimum≥ 6 SUall year
pHminimum≥ 6 SUall year
pHmaximum≤ 8.5 SUall year
pHmaximum≤ 8.5 SUall year
Solids, total suspended30-day average≤ 15 mg/Lall year
Solids, total suspended30-day average≤ 15 mg/Lall year
Solids, total suspended7-day average≤ 23 mg/Lall year
Solids, total suspended7-day average≤ 23 mg/Lall year
Solids, total suspended30-day average≤ 27 lb/dall year
Solids, total suspended30-day average≤ 27 lb/dall year
Solids, total suspended7-day average≤ 42 lb/dall year
Solids, total suspended7-day average≤ 42 lb/dall year
Oil & Grease30-day average≤ 15 mg/Lall year
Oil & Grease30-day average≤ 15 mg/Lall year
Flow, in conduit or thru treatment plant30-day averagereport only (MGD)all year
Flow, in conduit or thru treatment plant30-day averagereport only (MGD)all year
Flow, in conduit or thru treatment plant7-day averagereport only (MGD)all year
Flow, in conduit or thru treatment plant7-day averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualinstantaneous maximum≤ 11 ug/Lall year
Chlorine, total residualinstantaneous maximum≤ 11 ug/Lall year
Coliform, fecal general30-day geometric mean≤ 200 CFU/100mLall year
Coliform, fecal general30-day geometric mean≤ 200 CFU/100mLall year
Coliform, fecal general7-day geometric mean≤ 400 CFU/100mLall year
Coliform, fecal general7-day geometric mean≤ 400 CFU/100mLall year
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended 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/LA0050971 · MCP: https://passage-data.com/mcp