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Weyerhaeuser NR Company

Sawmills And Planing Mills, General, Philadelphia, Mississippi. NPDES permit MS0001961, in force until May 31, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form Q quarterly (10 values), outfall 002 form Q quarterly (8 values), outfall 003 form Q quarterly (8 values), outfall 001 form Y yearly, outfall 002 form Y yearly
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 14 reports late

Limits in force (28)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitquarterly averagereport only (deg F)all year001
Temperature, water deg. fahrenheitquarterly maximum≤ 90 deg Fall year001
BOD, 5-day, 20 deg. Cannual maximumreport only (mg/L)all year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedquarterly average≤ 30 mg/Lall year001
Solids, total suspendedquarterly maximum≤ 60 mg/Lall year001
Oil & Greasequarterly average≤ 10 mg/Lall year001
Oil & Greasequarterly maximum≤ 15 mg/Lall year001
Flow, in conduit or thru treatment plantquarterly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantquarterly maximumreport only (MGD)all year001
Temperature, water deg. fahrenheitquarterly averagereport only (deg F)all year002
Temperature, water deg. fahrenheitquarterly maximum≤ 90 deg Fall year002
BOD, 5-day, 20 deg. Cannual maximumreport only (mg/L)all year002
pHminimum≥ 6 SUall year002
pHmaximum≤ 9 SUall year002
Solids, total suspendedquarterly average≤ 30 mg/Lall year002
Solids, total suspendedquarterly maximum≤ 60 mg/Lall year002
Flow, in conduit or thru treatment plantquarterly averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantquarterly maximumreport only (MGD)all year002
pHminimum≥ 6 SUall year003
pHmaximum≤ 9 SUall year003
Pentachlorophenolquarterly average≤ .007 mg/Lall year003
Pentachlorophenolquarterly maximum≤ .011 mg/Lall year003
Pentachlorophenolquarterly average≤ .0002 lb/dall year003
Pentachlorophenolquarterly maximum≤ .00036 lb/dall year003
Flow, in conduit or thru treatment plantquarterly averagereport only (MGD)all year003
Flow, in conduit or thru treatment plantquarterly maximumreport only (MGD)all year003

How strict are these limits?

Cited limits by parameter: Mississippi's rules and the federal ones.

Same industry: the 23 Lumber and Wood Products permits in Mississippi.

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/MS0001961 · MCP: https://passage-data.com/mcp