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ST Martin Parish Government

Sewage treatment plant, Broussard, Louisiana. NPDES permit LA0122718, in force until Dec 31, 2028. Last 12 months: over a limit 43 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A quarterly (14 values), form Q quarterly (4 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
21 values over a limit, 0 required values missing, 0 of 16 reports late

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

All 43 values over a limit
Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], monthly average32.7 mg/L≤ 5 mg/L554%
October 2025Nitrogen, ammonia total [as N], weekly average32.7 mg/L≤ 10 mg/L227%
November 2025Coliform, fecal general, monthly geometric mean2419.6 #/100mL≤ 200 #/100mL1110%
November 2025Coliform, fecal general, weekly geometric mean2419.6 #/100mL≤ 400 #/100mL505%
November 2025Nitrogen, ammonia total [as N], monthly average13.6 mg/L≤ 5 mg/L172%
November 2025Nitrogen, ammonia total [as N], weekly average13.6 mg/L≤ 10 mg/L36%
November 2025Oxygen, dissolved [DO], monthly average minimum3.7 mg/L≥ 5 mg/L26%
November 2025Solids, total suspended, monthly average58 mg/L≤ 20 mg/L190%
November 2025Solids, total suspended, weekly average58 mg/L≤ 30 mg/L93%
January 2026Coliform, fecal general, monthly geometric mean> 2419.6 #/100mL≤ 200 #/100mL—
January 2026Coliform, fecal general, weekly geometric mean> 2419.6 #/100mL≤ 400 #/100mL—
January 2026Solids, total suspended, monthly average70 mg/L≤ 20 mg/L250%
January 2026Solids, total suspended, weekly average70 mg/L≤ 30 mg/L133%
February 2026Coliform, fecal general, monthly geometric mean> 2419.6 #/100mL≤ 200 #/100mL—
February 2026Coliform, fecal general, weekly geometric mean> 2419.6 #/100mL≤ 400 #/100mL—
February 2026Nitrogen, ammonia total [as N], monthly average12.7 mg/L≤ 10 mg/L27%
February 2026Oxygen, dissolved [DO], monthly average minimum4.9 mg/L≥ 5 mg/L2%
February 2026Solids, total suspended, monthly average107 mg/L≤ 20 mg/L435%
February 2026Solids, total suspended, weekly average107 mg/L≤ 30 mg/L257%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average37 mg/L≤ 20 mg/L85%
March 2026BOD, carbonaceous [5 day, 20 C], weekly average37 mg/L≤ 30 mg/L23%
March 2026Coliform, fecal general, monthly geometric mean> 2419.6 #/100mL≤ 200 #/100mL—
March 2026Coliform, fecal general, weekly geometric mean> 2419.6 #/100mL≤ 400 #/100mL—
March 2026Solids, total suspended, monthly average218 mg/L≤ 20 mg/L990%
March 2026Solids, total suspended, weekly average218 mg/L≤ 30 mg/L627%
April 2026Coliform, fecal general, monthly geometric mean> 2419.6 #/100mL≤ 200 #/100mL—
April 2026Coliform, fecal general, weekly geometric mean> 2419.6 #/100mL≤ 400 #/100mL—
April 2026Nitrogen, ammonia total [as N], monthly average10.3 mg/L≤ 10 mg/L3%
April 2026Oxygen, dissolved [DO], monthly average minimum3.4 mg/L≥ 5 mg/L32%
April 2026Solids, total suspended, monthly average83 mg/L≤ 20 mg/L315%
April 2026Solids, total suspended, weekly average83 mg/L≤ 30 mg/L177%
May 2026Coliform, fecal general, monthly geometric mean360.9 #/100mL≤ 200 #/100mL80%
May 2026Nitrogen, ammonia total [as N], monthly average12.2 mg/L≤ 5 mg/L144%
May 2026Nitrogen, ammonia total [as N], weekly average12.2 mg/L≤ 10 mg/L22%
May 2026Oxygen, dissolved [DO], monthly average minimum3.3 mg/L≥ 5 mg/L34%
May 2026Solids, total suspended, monthly average25 mg/L≤ 20 mg/L25%
June 2026BOD, carbonaceous [5 day, 20 C], monthly average11 mg/L≤ 10 mg/L10%
June 2026Coliform, fecal general, monthly geometric mean> 2419.6 #/100mL≤ 200 #/100mL—
June 2026Coliform, fecal general, weekly geometric mean> 2419.6 #/100mL≤ 400 #/100mL—
June 2026Nitrogen, ammonia total [as N], monthly average15.2 mg/L≤ 5 mg/L204%
June 2026Nitrogen, ammonia total [as N], weekly average15.2 mg/L≤ 10 mg/L52%
June 2026Oxygen, dissolved [DO], monthly average minimum1.8 mg/L≥ 5 mg/L64%
June 2026Solids, total suspended, monthly average23 mg/L≤ 20 mg/L15%

Limits in force (22)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly average minimum≥ 5 mg/Lall year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 20 mg/Lall year
Solids, total suspendedweekly average≤ 30 mg/Lall year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]weekly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly average≤ 5 mg/LMay–Dec
Nitrogen, ammonia total [as N]monthly average≤ 10 mg/LJan–Apr
Nitrogen, ammonia total [as N]weekly average≤ 10 mg/LMay–Dec
Nitrogen, ammonia total [as N]weekly average≤ 20 mg/LJan–Apr
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]weekly averagereport only (mg/L)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
Chlorine, total residualinstantaneous maximumreport only (mg/L)all year
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal generalweekly geometric mean≤ 400 #/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20 mg/LJan–Apr
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LMay–Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 30 mg/LJan–Apr
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/LMay–Dec

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/LA0122718 · MCP: https://passage-data.com/mcp