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Town of Marshall

Sewage treatment plant, Marshall, North Carolina. NPDES permit NC0021733 expired Sep 30, 2026; its limits still apply. Last 12 months: over a limit 5 times (last May 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 31 days after each period: form M monthly (14 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
12 values over a limit, 0 required values missing, 0 of 12 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
December 2025Solids, total suspended, 30-day average30.0285 mg/L≤ 30 mg/L0%
December 2025Solids, total suspended, 7-day average46 mg/L≤ 45 mg/L2%
April 2026Solids, total suspended, 30-day average40 mg/L≤ 30 mg/L33%
May 2026BOD, 5-day, 20 deg. C, 7-day average71 mg/L≤ 45 mg/L58%
May 2026Solids, total suspended, 7-day average80 mg/L≤ 45 mg/L78%

Limits in force (14)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
BOD, 5-day, 20 deg. C7-day average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. C30-day average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspended7-day average≤ 45 mg/Lall year
Solids, total suspended30-day average≤ 30 mg/Lall year
Solids, total suspendeddaily maximumreport only (mg/L)all year
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year
Coliform, fecal MF, MFC broth, 44.5 Cweekly geometric mean≤ 400 #/100mLall year
Coliform, fecal MF, MFC broth, 44.5 Cmonthly geometric mean≤ 200 #/100mLall year
Flow, in conduit or thru treatment plant30-day average≤ .4 MGDall year
Chlorine, total residualdaily maximum≤ 28 ug/Lall year

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/NC0021733 · MCP: https://passage-data.com/mcp