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Hessmer, Village of

Sewage treatment plant, Hessmer, Louisiana. NPDES permit LA0046469, in force until Sep 30, 2028. Last 12 months: over a limit 4 times (last May 2026), 1 of 18 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A quarterly (16 values), form Q quarterly (6 values)
Renewal application due
Apr 3, 2028 · 180 days before expiry; your permit may set another date
Last report on file
July 2026
Oct 2024 – Sep 2025
33 values over a limit, 0 required values missing, 5 of 21 reports late

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

Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], monthly average2.58 mg/L≤ 2 mg/L29%
October 2025Nitrogen, ammonia total [as N], weekly average4.03 mg/L≤ 4 mg/L1%
February 2026Oxygen, dissolved [DO], monthly average minimum3.71 mg/L≥ 5 mg/L26%
May 2026pH, instantaneous minimum4.46 SU≥ 6 SU—

Limits in force (29)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]monthly average minimum≥ 5 mg/Lall year001
pHinstantaneous minimum≥ 6 SUall year001
pHinstantaneous maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 15 mg/Lall year001
Solids, total suspendedweekly average≤ 23 mg/Lall year001
Solids, total suspendedmonthly average≤ 18.8 lb/dall year001
Nitrogen, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, total [as N]weekly averagereport only (mg/L)all year001
Nitrogen, total [as N]monthly averagereport only (lb/d)all year001
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/LApr–Oct001
Nitrogen, ammonia total [as N]weekly average≤ 4 mg/LApr–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 2.5 lb/dApr–Oct001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]weekly averagereport only (mg/L)all year001
Phosphorus, total [as P]monthly averagereport only (lb/d)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantweekly averagereport only (MGD)all year001
Chlorine, total residualinstantaneous maximum≤ .033 mg/Lall year001
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year001
Coliform, fecal generalweekly geometric mean≤ 400 #/100mLall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20 mg/LJan, Feb, Mar, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LApr–Oct001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 30 mg/LJan, Feb, Mar, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/LApr–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 lb/dJan, Feb, Mar, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 12.5 lb/dApr–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 10 mg/LJan, Feb, Mar, Nov, Dec01A
Nitrogen, ammonia total [as N]weekly average≤ 20 mg/LJan, Feb, Mar, Nov, Dec01A
Nitrogen, ammonia total [as N]monthly average≤ 12.5 lb/dJan, Feb, Mar, Nov, Dec01A

New limits from Oct 1, 2028

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Nitrogen, ammonia total [as N], monthly average2.1 mg/L (Jan, Feb, Mar, Nov, Dec)tighter2.55 mg/L (5 values, 2 below detection)1.21×
Nitrogen, ammonia total [as N], monthly average2.7 lb/d (Jan, Feb, Mar, Nov, Dec)tighter1.52 lb/d (5 values)0.563×
Nitrogen, ammonia total [as N], weekly average5 mg/L (Jan, Feb, Mar, Nov, Dec)tighter2.94 mg/L (5 values, 2 below detection)0.588×

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/LA0046469 · MCP: https://passage-data.com/mcp