Passage Data · Check a report · Use it from your AI

Southwest Development Corp

Sewerage Systems, Pattison, Mississippi. NPDES permit MS0057134 expired Nov 30, 2015; its limits still apply. Last 12 months: no values over a limit, 15 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form Y yearly
Last report on file
None
Oct 2024 – Sep 2025
0 values over a limit, 15 required values missing, 0 of 1 report late

Limits in force (15)

ParameterStatisticLimitMonths
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≤ 5 lb/dall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 7.5 lb/dall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmaximum monthly average≤ 60 mg/Lall year
Solids, total suspendeddaily maximum≤ 60 mg/Lall year
Solids, total suspendedmaximum monthly average≤ 10 lb/dall year
Solids, total suspendeddaily maximum≤ 10 lb/dall year
Flow, in conduit or thru treatment plantmaximum monthly average≤ .02016 MGDall year
Chlorine, total residualminimum≥ .1 mg/Lall year
Chlorine, total residualmaximum≤ 1 mg/Lall year
Coliform, fecal generalmaximum monthly average≤ 200 #/100mLall year
Coliform, fecal generaldaily maximum≤ 400 #/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

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MS0057134 · MCP: https://passage-data.com/mcp