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City of Thomasville

Sewage treatment plant, major discharger, Thomasville, North Carolina. NPDES permit NC0024112 expired Apr 30, 2026; its limits still apply. Last 12 months: over a limit 8 times (last July 2026), 10 required values missing, 11 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 31 days after each period: form M monthly (19 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
7 values over a limit, 28 required values missing, 11 of 12 reports late

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

Period endingParameterReportedLimitOver by
February 2026BOD, 5-day, 20 deg. C, 30-day average44.23 mg/L≤ 6 mg/L637%
February 2026BOD, 5-day, 20 deg. C, 7-day average175 mg/L≤ 9 mg/L1844%
February 2026Solids, total suspended, 30-day average65.0615 mg/L≤ 30 mg/L117%
February 2026Solids, total suspended, 7-day average252.71 mg/L≤ 45 mg/L462%
July 2026BOD, 5-day, 20 deg. C, 30-day average13.4636 mg/L≤ 4 mg/L237%
July 2026BOD, 5-day, 20 deg. C, 7-day average57.978 mg/L≤ 6 mg/L866%
July 2026Solids, total suspended, 30-day average56.759 mg/L≤ 30 mg/L89%
July 2026Solids, total suspended, 7-day average249.2 mg/L≤ 45 mg/L454%

Limits in force (24)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Oxygen, dissolved [DO]daily minimum≥ 6 mg/Lall year
BOD, 5-day, 20 deg. C7-day average≤ 6 mg/LApr–Oct
BOD, 5-day, 20 deg. C7-day average≤ 9 mg/LJan, Feb, Mar, Nov, Dec
BOD, 5-day, 20 deg. C30-day average≤ 4 mg/LApr–Oct
BOD, 5-day, 20 deg. C30-day average≤ 6 mg/LJan, Feb, Mar, Nov, Dec
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, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, ammonia total [as N]7-day average≤ 3 mg/LApr–Oct
Nitrogen, ammonia total [as N]7-day average≤ 9 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]30-day average≤ 1 mg/LApr–Oct
Nitrogen, ammonia total [as N]30-day average≤ 3 mg/LJan, Feb, Mar, Nov, Dec
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (lb/mo)all year
Copper, total [as Cu]30-day average≤ 15.76 ug/Lall year
Copper, total [as Cu]daily maximum≤ 22.31 ug/Lall 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≤ 6 MGDall year

How strict are these limits?

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/NC0024112 · MCP: https://passage-data.com/mcp