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D&M Septic Tank LLC

Sewerage Systems, Breaux Bridge, Louisiana. NPDES permit LA0126974, in force until Sep 30, 2030. Last 12 months: over a limit 12 times (last September 2026), 31 required values missing, 5 of 18 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A quarterly (3 values), form Q quarterly (13 values), form S twice a year
Last report on file
September 2026
Oct 2024 – Sep 2025
5 values over a limit, 39 required values missing, 6 of 6 reports late

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

Period endingParameterReportedLimitOver by
March 2026BOD, 5-day, 20 deg. C, daily maximum53 mg/L≤ 45 mg/L18%
March 2026BOD, 5-day, 20 deg. C, monthly average32 mg/L≤ 30 mg/L7%
March 2026Coliform, fecal general, daily maximum> 24100 #/100mL≤ 400 #/100mL—
March 2026Coliform, fecal general, monthly geometric mean12385 #/100mL≤ 200 #/100mL6093%
March 2026Solids, total suspended, daily maximum57.9 mg/L≤ 45 mg/L29%
March 2026Solids, total suspended, monthly average33.3 mg/L≤ 30 mg/L11%
June 2026Coliform, fecal general, daily maximum411 #/100mL≤ 400 #/100mL3%
June 2026Coliform, fecal general, monthly geometric mean411 #/100mL≤ 200 #/100mL106%
September 2026BOD, 5-day, 20 deg. C, daily maximum51 mg/L≤ 45 mg/L13%
September 2026BOD, 5-day, 20 deg. C, monthly average51 mg/L≤ 30 mg/L70%
September 2026Coliform, fecal general, daily maximum> 2410 #/100mL≤ 400 #/100mL—
September 2026Coliform, fecal general, monthly geometric mean> 2410 #/100mL≤ 200 #/100mL—

Limits in force (25)

ParameterStatisticLimitMonths
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 45 mg/Lall year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendeddaily maximum≤ 45 mg/Lall year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Arsenic, total [as As]daily maximumreport only (ug/L)all year
Cadmium, total [as Cd]daily maximumreport only (ug/L)all year
Copper, total [as Cu]daily maximumreport only (ug/L)all year
Lead, total [as Pb]daily maximumreport only (ug/L)all year
Molybdenum, total [as Mo]daily maximumreport only (ug/L)all year
Nickel, total [as Ni]daily maximumreport only (ug/L)all year
Zinc, total [as Zn]daily maximumreport only (ug/L)all year
Selenium, total [as Se]daily maximumreport only (ug/L)all year
Oil and greasedaily maximum≤ 15 mg/Lall 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 maximumreport only (mg/L)all year
Mercury, total [as Hg]daily maximumreport only (ug/L)all year
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal generaldaily maximum≤ 400 #/100mLall 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/LA0126974 · MCP: https://passage-data.com/mcp