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Town of Benton -Palmetto Park Treatment Plant

Sewage treatment plant, Benton, Louisiana. NPDES permit LA0102890 expired May 31, 2023; its limits still apply. Last 12 months: over a limit 29 times (last June 2026), 2 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A quarterly (24 values), form Q quarterly (10 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
23 values over a limit, 0 required values missing, 0 of 16 reports late

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

All 29 values over a limit
Period endingParameterReportedLimitOver by
November 2025Solids, total suspended, monthly average20.4 mg/L≤ 15 mg/L36%
December 2025Nitrogen, ammonia total [as N], monthly average19.7 lb/d≤ 17 lb/d16%
December 2025Nitrogen, ammonia total [as N], monthly average33.2 mg/L≤ 5 mg/L564%
December 2025Nitrogen, ammonia total [as N], weekly average33.2 mg/L≤ 10 mg/L232%
January 2026BOD, carbonaceous [5 day, 20 C], monthly average12.9 mg/L≤ 10 mg/L29%
January 2026Solids, total suspended, monthly average39.7 mg/L≤ 15 mg/L165%
January 2026Solids, total suspended, weekly average39.7 mg/L≤ 23 mg/L73%
February 2026Solids, total suspended, monthly average36.6 mg/L≤ 15 mg/L144%
February 2026Solids, total suspended, monthly average56.6 lb/d≤ 50 lb/d13%
February 2026Solids, total suspended, weekly average35.5 mg/L≤ 23 mg/L54%
March 2026Nitrogen, ammonia total [as N], monthly average36.8 mg/L≤ 5 mg/L636%
March 2026Nitrogen, ammonia total [as N], monthly average40 lb/d≤ 17 lb/d135%
March 2026Nitrogen, ammonia total [as N], weekly average36.8 mg/L≤ 10 mg/L268%
March 2026Solids, total suspended, monthly average25.6 mg/L≤ 15 mg/L71%
March 2026Solids, total suspended, weekly average25.7 mg/L≤ 23 mg/L12%
April 2026BOD, carbonaceous [5 day, 20 C], monthly average17.1 mg/L≤ 10 mg/L71%
April 2026BOD, carbonaceous [5 day, 20 C], weekly average17.1 mg/L≤ 15 mg/L14%
April 2026Solids, total suspended, monthly average31.3 mg/L≤ 15 mg/L109%
April 2026Solids, total suspended, weekly average31.3 mg/L≤ 23 mg/L36%
May 2026BOD, carbonaceous [5 day, 20 C], monthly average14.6 mg/L≤ 10 mg/L46%
May 2026BOD, carbonaceous [5 day, 20 C], weekly average15.9 mg/L≤ 15 mg/L6%
May 2026Solids, total suspended, monthly average26 mg/L≤ 15 mg/L73%
May 2026Solids, total suspended, monthly average56.7 lb/d≤ 50 lb/d13%
May 2026Solids, total suspended, weekly average28.4 mg/L≤ 23 mg/L23%
June 2026BOD, carbonaceous [5 day, 20 C], monthly average16.8 mg/L≤ 10 mg/L68%
June 2026BOD, carbonaceous [5 day, 20 C], weekly average16.1 mg/L≤ 15 mg/L7%
June 2026Nitrogen, ammonia total [as N], monthly average12.1 mg/L≤ 5 mg/L142%
June 2026Nitrogen, ammonia total [as N], weekly average12.1 mg/L≤ 10 mg/L21%
June 2026Solids, total suspended, monthly average22 mg/L≤ 15 mg/L47%

Limits in force (34)

ParameterStatisticLimitMonths
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≤ 50 lb/dall year
Solids, total suspendedmonthly average≤ 50 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]weekly average≤ 10 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 17 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
Solids, total dissolvedmonthly average≤ 2618 lb/dall year
Coliform, fecal generalmonthly average≤ 200 #/100mLall year
Coliform, fecal generalmonthly average≤ 200 #/100mLall year
Coliform, fecal generalweekly average≤ 400 #/100mLall year
Coliform, fecal generalweekly average≤ 400 #/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/Lall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 33 lb/dall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 33 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/LA0102890 · MCP: https://passage-data.com/mcp