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Town of Olla- Olla WWTP

Sewage treatment plant, Olla, Louisiana. NPDES permit LA0032379, in force until Feb 28, 2029. Last 12 months: over a limit 8 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A quarterly (34 values), form Q quarterly (6 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
19 values over a limit, 0 required values missing, 0 of 16 reports late

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

Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], monthly average10 mg/L≤ 5 mg/L100%
January 2026Coliform, fecal general, monthly geometric mean495 #/100mL≤ 200 #/100mL148%
January 2026Coliform, fecal general, weekly geometric mean720 #/100mL≤ 400 #/100mL80%
February 2026Coliform, fecal general, monthly geometric mean210 #/100mL≤ 200 #/100mL5%
April 2026Nitrogen, ammonia total [as N], monthly average6 mg/L≤ 5 mg/L20%
May 2026Coliform, fecal general, weekly geometric mean960 #/100mL≤ 400 #/100mL140%
June 2026Coliform, fecal general, weekly geometric mean660 #/100mL≤ 400 #/100mL65%
June 2026Nitrogen, ammonia total [as N], monthly average6 mg/L≤ 5 mg/L20%

Limits in force (40)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly average minimum≥ 5 mg/Lall year
Oxygen, dissolved [DO]monthly average minimum≥ 5 mg/Lall year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 20 mg/Lall year
Solids, total suspendedmonthly average≤ 20 mg/Lall year
Solids, total suspendedweekly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 30 mg/Lall year
Solids, total suspendedmonthly average≤ 35 lb/dall year
Solids, total suspendedmonthly average≤ 35 lb/dall 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
Nitrogen, ammonia total [as N]monthly average≤ 5 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 5 mg/Lall year
Nitrogen, ammonia total [as N]weekly average≤ 10 mg/Lall year
Nitrogen, ammonia total [as N]weekly average≤ 10 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 9 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 9 lb/dall 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 plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantweekly 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
Chlorine, total residualinstantaneous maximumreport only (mg/L)all year
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal generalweekly geometric mean≤ 400 #/100mLall year
Coliform, fecal generalweekly geometric mean≤ 400 #/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20 mg/Lall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 30 mg/Lall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 30 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 35 lb/dall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 35 lb/dall 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/LA0032379 · MCP: https://passage-data.com/mcp