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Copiah County Industrial Park

Sewerage Systems, Gallman, Mississippi. NPDES permit MS0032921, in force until Jan 31, 2029. Last 12 months: over a limit 6 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 31 days after each period: form A monthly (35 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
25 values over a limit, 0 required values missing, 1 of 12 reports late

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

Period endingParameterReportedLimitOver by
February 2026Solids, total suspended, monthly average34 mg/L≤ 30 mg/L13%
July 2026Nitrogen, ammonia total [as N], monthly average2.84 mg/L≤ 2 mg/L42%
August 2026Nitrogen, ammonia total [as N], daily maximum11.83 mg/L≤ 3 mg/L294%
August 2026Nitrogen, ammonia total [as N], monthly average11.83 mg/L≤ 2 mg/L492%
August 2026Nitrogen, ammonia total [as N], monthly average6.4 lb/d≤ 5 lb/d28%
August 2026Solids, total suspended, monthly average33 mg/L≤ 30 mg/L10%

Limits in force (35)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 6 mg/Lall year
Oxygen, dissolved [DO]minimumreport only (mg/L)all year
Oxygen, dissolved [DO]maximumreport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly average≤ 15 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 22 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 62 lb/dall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 93 lb/dall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendeddaily maximum≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 125 lb/dall year
Solids, total suspendeddaily maximum≤ 187 lb/dall year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (lb/d)all year
Nitrogen, total [as N]daily maximumreport only (lb/d)all year
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/Lall year
Nitrogen, ammonia total [as N]daily maximum≤ 3 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 5 lb/dall year
Nitrogen, ammonia total [as N]daily maximum≤ 8 lb/dall year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (lb/d)all year
Phosphorus, total [as P]daily maximumreport only (lb/d)all year
Flow, in conduit or thru treatment plantmonthly average≤ .3 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualmonthly average≤ .014 mg/Lall year
Chlorine, total residualdaily maximum≤ .021 mg/Lall year
E. colimonthly average≤ 126 #/100mLall year
E. colidaily maximum≤ 410 #/100mLall year
Mercury, total recoverablemonthly averagereport only (mg/L)all year
Mercury, total recoverabledaily maximumreport only (mg/L)all year
Sludge settleability 30 minuteminimumreport only (mL/L)all year
Sludge settleability 30 minutemaximumreport only (mL/L)all year

How strict are these limits?

Cited limits by parameter: Mississippi'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/MS0032921 · MCP: https://passage-data.com/mcp