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Town of Merryville- Wastewater Treatment Facility

Sewage treatment plant, Merryville, Louisiana. NPDES permit LA0055867, in force until Apr 30, 2027. Last 12 months: over a limit 18 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A quarterly (26 values), form Q quarterly (6 values)
Renewal application due
Nov 1, 2026 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
12 values over a limit, 0 required values missing, 0 of 16 reports late

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

All 18 values over a limit
Period endingParameterReportedLimitOver by
December 2025Solids, total suspended, monthly average27.2 mg/L≤ 15 mg/L81%
December 2025Solids, total suspended, monthly average46.24 lb/d≤ 31.3 lb/d48%
December 2025Solids, total suspended, weekly average30.7 mg/L≤ 23 mg/L33%
January 2026Solids, total suspended, monthly average19.6 mg/L≤ 15 mg/L31%
January 2026Solids, total suspended, weekly average26.4 mg/L≤ 23 mg/L15%
March 2026Solids, total suspended, monthly average25.4 mg/L≤ 15 mg/L69%
March 2026Solids, total suspended, weekly average37.3 mg/L≤ 23 mg/L62%
April 2026Solids, total suspended, monthly average31.6 mg/L≤ 15 mg/L111%
April 2026Solids, total suspended, monthly average37.8 lb/d≤ 31.3 lb/d21%
April 2026Solids, total suspended, weekly average32.5 mg/L≤ 23 mg/L41%
May 2026Solids, total suspended, monthly average15.1 mg/L≤ 15 mg/L1%
June 2026Solids, total suspended, monthly average22.8 mg/L≤ 15 mg/L52%
June 2026Solids, total suspended, monthly average33.25 lb/d≤ 31.3 lb/d6%
June 2026Solids, total suspended, weekly average36 mg/L≤ 23 mg/L57%
July 2026Solids, total suspended, monthly average21.6 mg/L≤ 15 mg/L44%
July 2026Solids, total suspended, monthly average40.69 lb/d≤ 31.3 lb/d30%
July 2026Solids, total suspended, weekly average28 mg/L≤ 23 mg/L22%
August 2026Chlorine, total residual, instantaneous maximum< .1 mg/L≤ .033 mg/L203%

Limits in force (32)

ParameterStatisticLimitMonths
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/Lall year
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. Cweekly average≤ 15 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 20.9 lb/dall year
BOD, 5-day, 20 deg. Cmonthly average≤ 20.9 lb/dall 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≤ 15 mg/Lall year
Solids, total suspendedmonthly average≤ 15 mg/Lall year
Solids, total suspendedweekly average≤ 23 mg/Lall year
Solids, total suspendedweekly average≤ 23 mg/Lall year
Solids, total suspendedmonthly average≤ 31.3 lb/dall year
Solids, total suspendedmonthly average≤ 31.3 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 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 maximum≤ .033 mg/Lall year
Chlorine, total residualinstantaneous maximum≤ .033 mg/Lall 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

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/LA0055867 · MCP: https://passage-data.com/mcp