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Bernard Bayou Industrial District

Sewage treatment plant, Gulfport, Mississippi. NPDES permit MS0027537, in force until Sep 30, 2027. Last 12 months: over a limit 9 times (last June 2026), 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (33 values)
Renewal application due
Apr 3, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
33 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
October 2025BOD, 5-day, 20 deg. C, daily maximum9 mg/L≤ 6 mg/L50%
October 2025BOD, 5-day, 20 deg. C, monthly average7 mg/L≤ 4 mg/L75%
November 2025BOD, 5-day, 20 deg. C, monthly average5 mg/L≤ 4 mg/L25%
December 2025BOD, 5-day, 20 deg. C, daily maximum11 mg/L≤ 6 mg/L83%
December 2025BOD, 5-day, 20 deg. C, daily maximum38.6 lb/d≤ 30 lb/d29%
December 2025BOD, 5-day, 20 deg. C, monthly average26.1 lb/d≤ 20 lb/d31%
December 2025BOD, 5-day, 20 deg. C, monthly average8 mg/L≤ 4 mg/L100%
January 2026BOD, 5-day, 20 deg. C, daily maximum8 mg/L≤ 6 mg/L33%
June 2026Nitrogen, total [as N], monthly average49.6 lb/d≤ 43.78 lb/d13%

Limits in force (37)

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≤ 4 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 6 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 20 lb/dall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 30 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≤ 150 lb/dall year
Solids, total suspendeddaily maximum≤ 225 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 average≤ 43.78 lb/dall year
Nitrogen, total [as N]daily maximum≤ 65.67 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 1.37 mg/Lall year
Nitrogen, ammonia total [as N]daily maximum≤ 3 mg/Lall year
Nitrogen, ammonia total [as N]daily maximum≤ 2.06 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 10 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 6.86 lb/dall year
Nitrogen, ammonia total [as N]daily maximum≤ 15 lb/dall year
Nitrogen, ammonia total [as N]daily maximum≤ 10.28 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 average≤ 14.01 lb/dall year
Phosphorus, total [as P]daily maximum≤ 21.02 lb/dall year
Enterococci: group D, MF trans, M-E, EIAmonthly average≤ 35 #/100mLall year
Enterococci: group D, MF trans, M-E, EIAdaily maximum≤ 130 #/100mLall year
Flow, in conduit or thru treatment plantmonthly average≤ .6 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualmonthly average≤ .011 mg/Lall year
Chlorine, total residualdaily 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/MS0027537 · MCP: https://passage-data.com/mcp