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Mdot, Interstate 10 Welcome Center

Regulation, Administration Of Transportation, Moss Point, Mississippi. NPDES permit MS0037966, in force until Mar 31, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form Y yearly
Renewal application due
Oct 2, 2026 · 180 days before expiry; your permit may set another date
Last report on file
December 2025
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 0 of 1 report late

Limits in force (22)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimumreport only (mg/L)all year
Oxygen, dissolved [DO]maximumreport only (mg/L)all year
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 17.5 lb/dall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 26.2 lb/dall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
pHminimumreport only (SU)all year
pHmaximumreport only (SU)all year
Solids, total suspendedmaximum monthly average≤ 30 mg/Lall year
Solids, total suspendeddaily maximum≤ 45 mg/Lall year
Solids, total suspendedmaximum monthly average≤ 17.5 lb/dall year
Solids, total suspendeddaily maximum≤ 26.2 lb/dall year
Flow, in conduit or thru treatment plantmaximum monthly average≤ .07 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualminimum≥ .1 mg/Lall year
Chlorine, total residualmaximum≤ 1 mg/Lall year
E. colimaximum monthly average≤ 126 #/100mLall year
E. colidaily maximum≤ 410 #/100mLall 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.

Same industry: the 9 Administration of Economic Programs permits in Mississippi.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MS0037966 · MCP: https://passage-data.com/mcp