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Hatttiesburg Laurel Regional Airport Authority

Airports, Flying Fields, & Services, Moselle, Mississippi. NPDES permit MS0031542, in force until Apr 30, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form Q quarterly (31 values)
Renewal application due
Nov 2, 2027 · 180 days before expiry; your permit may set another date
Last report on file
June 2026
Oct 2024 – Sep 2025
19 values over a limit, 0 required values missing, 0 of 4 reports late

Limits in force (31)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 6 mg/Lall year
BOD, 5-day, 20 deg. Cquarterly average≤ 16 mg/Lall year
BOD, 5-day, 20 deg. Cquarterly maximum≤ 24 mg/Lall year
pHminimum≥ 6 SUall year
pHquarterly maximum≤ 9 SUall year
Solids, total suspendedquarterly average≤ 30 mg/Lall year
Solids, total suspendedquarterly maximum≤ 45 mg/Lall year
Nitrogen, total [as N]quarterly averagereport only (mg/L)all year
Nitrogen, total [as N]quarterly maximumreport only (mg/L)all year
Nitrogen, total [as N]quarterly averagereport only (lb/d)all year
Nitrogen, total [as N]quarterly maximumreport only (lb/d)all year
Nitrogen, ammonia total [as N]quarterly average≤ 1.37 mg/Lall year
Nitrogen, ammonia total [as N]quarterly maximum≤ 3 mg/Lall year
Nitrogen, Kjeldahl, total [as N]quarterly averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]quarterly maximumreport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]quarterly averagereport only (lb/d)all year
Nitrogen, Kjeldahl, total [as N]quarterly maximumreport only (lb/d)all year
Nitrite + Nitrate total [as N]quarterly averagereport only (mg/L)all year
Nitrite + Nitrate total [as N]quarterly maximumreport only (mg/L)all year
Nitrite + Nitrate total [as N]quarterly averagereport only (lb/d)all year
Nitrite + Nitrate total [as N]quarterly maximumreport only (lb/d)all year
Phosphorus, total [as P]quarterly averagereport only (mg/L)all year
Phosphorus, total [as P]quarterly maximumreport only (mg/L)all year
Phosphorus, total [as P]quarterly averagereport only (lb/d)all year
Phosphorus, total [as P]quarterly maximumreport only (lb/d)all year
Flow, in conduit or thru treatment plantquarterly average≤ .05 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualquarterly average≤ .011 mg/Lall year
Chlorine, total residualquarterly maximum≤ .019 mg/Lall year
E. coliquarterly average≤ 126 #/100mLall year
E. coliquarterly maximum≤ 410 #/100mLall 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/MS0031542 · MCP: https://passage-data.com/mcp