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Town of Clayton

Sewage treatment plant, Clayton, Louisiana. NPDES permit LA0044644 expired Mar 31, 2025; its limits still apply. Last 12 months: over a limit 36 times (last July 2026), 4 of 13 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A quarterly (12 values), form Q quarterly (6 values)
Last report on file
July 2026
Oct 2024 – Sep 2025
18 values over a limit, 0 required values missing, 6 of 16 reports late

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

All 36 values over a limit
Period endingParameterReportedLimitOver by
October 2025BOD, 5-day, 20 deg. C, monthly average10.74 mg/L≤ 10 mg/L7%
October 2025Coliform, fecal general, monthly geometric mean204 #/100mL≤ 200 #/100mL2%
October 2025Coliform, fecal general, weekly geometric mean520 #/100mL≤ 400 #/100mL30%
October 2025Solids, total suspended, monthly average26 mg/L≤ 15 mg/L73%
October 2025Solids, total suspended, weekly average30 mg/L≤ 23 mg/L30%
November 2025Solids, total suspended, monthly average20.75 mg/L≤ 15 mg/L38%
November 2025Solids, total suspended, weekly average32 mg/L≤ 23 mg/L39%
December 2025Coliform, fecal general, monthly geometric mean302 #/100mL≤ 200 #/100mL51%
December 2025Coliform, fecal general, weekly geometric mean480 #/100mL≤ 400 #/100mL20%
December 2025Solids, total suspended, monthly average15.65 mg/L≤ 15 mg/L4%
January 2026BOD, 5-day, 20 deg. C, monthly average18.6 mg/L≤ 10 mg/L86%
January 2026BOD, 5-day, 20 deg. C, weekly average21.75 mg/L≤ 15 mg/L45%
January 2026Coliform, fecal general, monthly geometric mean201 #/100mL≤ 200 #/100mL1%
January 2026Solids, total suspended, monthly average29.67 mg/L≤ 15 mg/L98%
January 2026Solids, total suspended, weekly average30 mg/L≤ 23 mg/L30%
February 2026BOD, 5-day, 20 deg. C, monthly average12.97 mg/L≤ 10 mg/L30%
February 2026BOD, 5-day, 20 deg. C, weekly average21.95 mg/L≤ 15 mg/L46%
February 2026Solids, total suspended, monthly average18.76 mg/L≤ 15 mg/L25%
February 2026Solids, total suspended, weekly average36 mg/L≤ 23 mg/L57%
March 2026Coliform, fecal general, monthly geometric mean262 #/100mL≤ 200 #/100mL31%
March 2026Solids, total suspended, monthly average25.88 mg/L≤ 15 mg/L73%
March 2026Solids, total suspended, weekly average30 mg/L≤ 23 mg/L30%
April 2026Solids, total suspended, monthly average43.5 mg/L≤ 15 mg/L190%
April 2026Solids, total suspended, weekly average46 mg/L≤ 23 mg/L100%
May 2026Solids, total suspended, monthly average37.63 lb/d≤ 16.6 lb/d127%
May 2026Solids, total suspended, monthly average37.66 mg/L≤ 15 mg/L151%
May 2026Solids, total suspended, weekly average38 mg/L≤ 23 mg/L65%
June 2026BOD, 5-day, 20 deg. C, monthly average12.36 mg/L≤ 10 mg/L24%
June 2026Coliform, fecal general, weekly geometric mean660 #/100mL≤ 400 #/100mL65%
June 2026Solids, total suspended, monthly average31.34 mg/L≤ 15 mg/L109%
June 2026Solids, total suspended, weekly average38 mg/L≤ 23 mg/L65%
July 2026BOD, 5-day, 20 deg. C, monthly average12.06 mg/L≤ 10 mg/L21%
July 2026BOD, 5-day, 20 deg. C, weekly average18.3 mg/L≤ 15 mg/L22%
July 2026Coliform, fecal general, monthly geometric mean315 #/100mL≤ 200 #/100mL58%
July 2026Solids, total suspended, monthly average23.14 mg/L≤ 15 mg/L54%
July 2026Solids, total suspended, weekly average29 mg/L≤ 23 mg/L26%

Limits in force (18)

ParameterStatisticLimitMonths
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 15 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 11.1 lb/dall year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 15 mg/Lall year
Solids, total suspendedweekly average≤ 23 mg/Lall year
Solids, total suspendedmonthly average≤ 16.6 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
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 plantweekly averagereport only (MGD)all year
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal generalweekly geometric mean≤ 400 #/100mLall 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/LA0044644 · MCP: https://passage-data.com/mcp