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Town of Arcadia- WWTP

Sewage treatment plant, Arcadia, Louisiana. NPDES permit LA0038504 expired Feb 28, 2025; its limits still apply. Last 12 months: over a limit 26 times (last August 2026), 4 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 01A form A quarterly (32 values), outfall 01A form Q quarterly (26 values), outfall 01B form A quarterly (26 values), outfall 01B form Q quarterly (26 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
14 values over a limit, 0 required values missing, 6 of 32 reports late

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

All 26 values over a limit
Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], monthly average5.99 mg/L≤ 2 mg/L200%
October 2025Nitrogen, ammonia total [as N], weekly average5.99 mg/L≤ 4 mg/L50%
October 2025Oxygen, dissolved [DO], monthly average minimum5.4 mg/L≥ 6 mg/L10%
November 2025Nitrogen, ammonia total [as N], monthly average5.97 mg/L≤ 2 mg/L199%
November 2025Nitrogen, ammonia total [as N], weekly average5.97 mg/L≤ 4 mg/L49%
November 2025Oxygen, dissolved [DO], monthly average minimum5.5 mg/L≥ 6 mg/L8%
December 2025Nitrogen, ammonia total [as N], monthly average11.87 lb/d≤ 8.3 lb/d43%
December 2025Nitrogen, ammonia total [as N], monthly average4.1 mg/L≤ 2 mg/L105%
December 2025Nitrogen, ammonia total [as N], weekly average4.1 mg/L≤ 4 mg/L3%
January 2026Nitrogen, ammonia total [as N], monthly average15.39 lb/d≤ 8.3 lb/d85%
January 2026Nitrogen, ammonia total [as N], monthly average7.85 mg/L≤ 2 mg/L293%
January 2026Nitrogen, ammonia total [as N], weekly average7.85 mg/L≤ 4 mg/L96%
March 2026Nitrogen, ammonia total [as N], monthly average2.1 mg/L≤ 2 mg/L5%
March 2026Nitrogen, ammonia total [as N], monthly average22.93 lb/d≤ 8.3 lb/d176%
March 2026Solids, total suspended, monthly average16 mg/L≤ 15 mg/L7%
March 2026Solids, total suspended, monthly average174.67 lb/d≤ 62.6 lb/d179%
April 2026Nitrogen, ammonia total [as N], monthly average8.68 mg/L≤ 2 mg/L334%
April 2026Nitrogen, ammonia total [as N], weekly average8.68 mg/L≤ 4 mg/L117%
May 2026Nitrogen, ammonia total [as N], monthly average2.73 mg/L≤ 2 mg/L37%
July 2026Nitrogen, ammonia total [as N], monthly average10.56 lb/d≤ 8.3 lb/d27%
July 2026Nitrogen, ammonia total [as N], monthly average3.97 mg/L≤ 2 mg/L99%
August 2026Nitrogen, ammonia total [as N], monthly average8.47 lb/d≤ 8.3 lb/d2%
August 2026Nitrogen, ammonia total [as N], monthly average8.99 mg/L≤ 2 mg/L350%
August 2026Nitrogen, ammonia total [as N], weekly average8.99 mg/L≤ 4 mg/L125%
August 2026Solids, total suspended, monthly average64 mg/L≤ 15 mg/L327%
August 2026Solids, total suspended, weekly average64 mg/L≤ 23 mg/L178%

Limits in force (110)

ParameterStatisticLimitMonthsOutfall
Sulfate [as S]monthly averagereport only (mg/L)all year01A
Sulfate [as S]monthly averagereport only (mg/L)all year01A
Sulfate [as S]weekly averagereport only (mg/L)all year01A
Sulfate [as S]weekly averagereport only (mg/L)all year01A
Sulfate [as S]monthly averagereport only (lb/d)all year01A
Sulfate [as S]monthly averagereport only (lb/d)all year01A
Oxygen, dissolved [DO]monthly average minimum≥ 6 mg/Lall year01A
Oxygen, dissolved [DO]monthly average minimum≥ 6 mg/Lall year01A
pHinstantaneous minimum≥ 6 SUall year01A
pHinstantaneous minimum≥ 6 SUall year01A
pHinstantaneous maximum≤ 9 SUall year01A
pHinstantaneous maximum≤ 9 SUall year01A
Solids, total suspendedmonthly average≤ 15 mg/Lall year01A
Solids, total suspendedmonthly average≤ 15 mg/Lall year01A
Solids, total suspendedweekly average≤ 23 mg/Lall year01A
Solids, total suspendedweekly average≤ 23 mg/Lall year01A
Solids, total suspendedmonthly average≤ 62.6 lb/dall year01A
Solids, total suspendedmonthly average≤ 62.6 lb/dall year01A
Nitrogen, total [as N]monthly averagereport only (mg/L)all year01A
Nitrogen, total [as N]monthly averagereport only (mg/L)all year01A
Nitrogen, total [as N]weekly averagereport only (mg/L)all year01A
Nitrogen, total [as N]weekly averagereport only (mg/L)all year01A
Nitrogen, total [as N]monthly averagereport only (lb/d)all year01A
Nitrogen, total [as N]monthly averagereport only (lb/d)all year01A
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/Lall year01A
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/Lall year01A
Nitrogen, ammonia total [as N]weekly average≤ 4 mg/Lall year01A
Nitrogen, ammonia total [as N]weekly average≤ 4 mg/Lall year01A
Nitrogen, ammonia total [as N]monthly average≤ 8.3 lb/dall year01A
Nitrogen, ammonia total [as N]monthly average≤ 8.3 lb/dall year01A
Phosphorus, total [as P]monthly averagereport only (ug/L)all year01A
Phosphorus, total [as P]monthly averagereport only (ug/L)all year01A
Phosphorus, total [as P]weekly averagereport only (ug/L)all year01A
Phosphorus, total [as P]weekly averagereport only (ug/L)all year01A
Phosphorus, total [as P]monthly averagereport only (lb/d)all year01A
Phosphorus, total [as P]monthly averagereport only (lb/d)all year01A
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year01A
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year01A
Flow, in conduit or thru treatment plantweekly averagereport only (MGD)all year01A
Flow, in conduit or thru treatment plantweekly averagereport only (MGD)all year01A
Solids, total dissolvedmonthly averagereport only (mg/L)all year01A
Solids, total dissolvedmonthly averagereport only (mg/L)all year01A
Solids, total dissolvedweekly averagereport only (mg/L)all year01A
Solids, total dissolvedweekly averagereport only (mg/L)all year01A
Solids, total dissolvedmonthly average≤ 573 lb/dall year01A
Solids, total dissolvedmonthly average≤ 573 lb/dall year01A
Solids, total dissolvedweekly average≤ 1364 lb/dall year01A
Solids, total dissolvedweekly average≤ 1364 lb/dall year01A
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year01A
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year01A
Coliform, fecal generalweekly geometric mean≤ 400 #/100mLall year01A
Coliform, fecal generalweekly geometric mean≤ 400 #/100mLall year01A
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year01A
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year01A
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/Lall year01A
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/Lall year01A
BOD, carbonaceous [5 day, 20 C]monthly average≤ 41.7 lb/dall year01A
BOD, carbonaceous [5 day, 20 C]monthly average≤ 41.7 lb/dall year01A
Sulfate [as S]monthly averagereport only (mg/L)all year01B
Sulfate [as S]monthly averagereport only (mg/L)all year01B
Sulfate [as S]weekly averagereport only (mg/L)all year01B
Sulfate [as S]weekly averagereport only (mg/L)all year01B
Sulfate [as S]monthly averagereport only (lb/d)all year01B
Sulfate [as S]monthly averagereport only (lb/d)all year01B
Oxygen, dissolved [DO]monthly average minimum≥ 6 mg/Lall year01B
Oxygen, dissolved [DO]monthly average minimum≥ 6 mg/Lall year01B
pHinstantaneous minimum≥ 6 SUall year01B
pHinstantaneous minimum≥ 6 SUall year01B
pHinstantaneous maximum≤ 9 SUall year01B
pHinstantaneous maximum≤ 9 SUall year01B
Solids, total suspendedmonthly average≤ 30 mg/Lall year01B
Solids, total suspendedmonthly average≤ 30 mg/Lall year01B
Solids, total suspendedweekly average≤ 45 mg/Lall year01B
Solids, total suspendedweekly average≤ 45 mg/Lall year01B
Nitrogen, total [as N]monthly averagereport only (mg/L)all year01B
Nitrogen, total [as N]monthly averagereport only (mg/L)all year01B
Nitrogen, total [as N]weekly averagereport only (mg/L)all year01B
Nitrogen, total [as N]weekly averagereport only (mg/L)all year01B
Nitrogen, total [as N]monthly averagereport only (lb/d)all year01B
Nitrogen, total [as N]monthly averagereport only (lb/d)all year01B
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/Lall year01B
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/Lall year01B
Nitrogen, ammonia total [as N]weekly average≤ 4 mg/Lall year01B
Nitrogen, ammonia total [as N]weekly average≤ 4 mg/Lall year01B
Phosphorus, total [as P]monthly averagereport only (ug/L)all year01B
Phosphorus, total [as P]monthly averagereport only (ug/L)all year01B
Phosphorus, total [as P]weekly averagereport only (ug/L)all year01B
Phosphorus, total [as P]weekly averagereport only (ug/L)all year01B
Phosphorus, total [as P]monthly averagereport only (lb/d)all year01B
Phosphorus, total [as P]monthly averagereport only (lb/d)all year01B
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year01B
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year01B
Flow, in conduit or thru treatment plantweekly averagereport only (MGD)all year01B
Flow, in conduit or thru treatment plantweekly averagereport only (MGD)all year01B
Solids, total dissolvedmonthly averagereport only (mg/L)all year01B
Solids, total dissolvedmonthly averagereport only (mg/L)all year01B
Solids, total dissolvedweekly averagereport only (mg/L)all year01B
Solids, total dissolvedweekly averagereport only (mg/L)all year01B
Solids, total dissolvedmonthly average≤ 573 lb/dall year01B
Solids, total dissolvedmonthly average≤ 573 lb/dall year01B
Solids, total dissolvedweekly average≤ 1364 lb/dall year01B
Solids, total dissolvedweekly average≤ 1364 lb/dall year01B
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year01B
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year01B
Coliform, fecal generalweekly geometric mean≤ 400 #/100mLall year01B
Coliform, fecal generalweekly geometric mean≤ 400 #/100mLall year01B
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year01B
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year01B
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/Lall year01B
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/Lall year01B

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/LA0038504 · MCP: https://passage-data.com/mcp